ARTIFICIAL NAIL ASSEMBLY SYSTEM

Abstract

An artificial nail assembly system includes a mounting portion having a base with a first surface configured to attach to a natural nail and a first connector interface. The artificial nail assembly system includes an extension portion having a nail body and a second connector interface configured to engage with the first connector interface of the mounting portion to releasably secure the extension portion to the mounting portion.

Claims

1. An artificial nail assembly system comprising: a mounting portion comprising: a base having a first surface configured to attach to a natural nail, and a first connector interface; and an extension portion comprising: a nail body, and a second connector interface configured to engage with the first connector interface of the mounting portion to releasably secure the extension portion to the mounting portion.

2. The artificial nail assembly system of claim 1, wherein the base comprises: a second surface opposite the first surface, wherein the second surface forms a first part of an exterior surface of an artificial nail.

3. The artificial nail assembly system of claim 1, wherein the nail body comprises: a third surface that forms a second part of an exterior surface of an artificial nail.

4. The artificial nail assembly system of claim 1, wherein the first connector interface of the mounting portion comprises one or more female portions, and wherein the second connector interface of the extension portion comprises one or more male portions.

5. The artificial nail assembly system of claim 1, wherein the first connector interface comprises one or more cavities disposed within the base of the mounting portion.

6. The artificial nail assembly system of claim 1, wherein the second connector interface includes one or more prongs.

7. The artificial nail assembly system of claim 1, wherein the first connector interface of the mounting portion comprises one or more male portions, and wherein the second connector interface of the extension portion comprises one or more female portions.

8. The artificial nail assembly system of claim 1, wherein the mounting portion and the extension portion are configured for at least two engagement states including a disconnected state in which the extension portion is separate from the mounting portion, and a final engagement state in which the first connector interface of the mounting portion is complementarily engaged with the second connector interface of the extension portion.

9. The artificial nail assembly system of claim 1, wherein the mounting portion comprises: a first end opposite a second end, the first end configured to mount adjacent to a cuticle associated with the natural nail.

10. The artificial nail assembly system of claim 1, wherein the first surface of the base comprises: an adhesive layer.

11. The artificial nail assembly system of claim 10, wherein the adhesive layer comprises one or more of a light-curable material, a pressure sensitive adhesive, a heat-activatable adhesive, or a resin.

12. The artificial nail assembly system of claim 1, wherein the first connector interface of the mounting portion is curved along a horizontal axis.

13. The artificial nail assembly system of claim 1, wherein an exterior surface of the extension portion comprises one or more decorative features.

14. The artificial nail assembly system of claim 1, wherein the mounting portion is configured in a first size for the natural nail of a first finger, and wherein another mounting portion is configured in a second size for a natural nail of a second finger.

15. The artificial nail assembly system of claim 1, wherein the extension portion has a first shape, and wherein another extension portion has a second shape.

16. The artificial nail assembly system of claim 1, wherein the extension portion has a first size, and wherein another extension portion has a second size.

17. The artificial nail assembly system of claim 1, wherein the mounting portion is configured to release the extension portion from engagement, and wherein the mounting portion is configured to engage with a third connector interface of another extension portion.

18. An artificial nail assembly system comprising: a mounting portion comprising: a base having a first surface configured to attach to a natural nail; and a first connector interface configured to connect with an extension portion to releasably secure the extension portion to the mounting portion.

19. The artificial nail assembly system of claim 18, wherein the base further comprises: a second surface opposite the first surface, the second surface forming a first part of an exterior surface of an artificial nail.

20. The artificial nail assembly system of claim 18, wherein the extension portion comprises a third surface forming a second part of an exterior surface of an artificial nail.

21. The artificial nail assembly system of claim 18, wherein the first connector interface comprises a female portion.

22. The artificial nail assembly system of claim 18, wherein the first connector interface comprises one or more cavities.

23. The artificial nail assembly system of claim 18, wherein the first connector interface extends inwardly into a body of the base.

24. The artificial nail assembly system of claim 18, wherein the first connector interface comprises a male portion.

25. The artificial nail assembly system of claim 18, wherein the first connector interface includes a first feature having a reciprocal profile with a second feature of the extension portion, and wherein the first feature of the first connector interface is configured to connect with the second feature of the extension portion to releasably secure the extension portion to the mounting portion.

26. The artificial nail assembly system of claim 18, wherein a second surface of the base comprises one or more decorative features.

27. The artificial nail assembly system of claim 18, wherein the first connector interface is configured to connect with the extension portion to releasably secure the extension portion to the mounting portion using a friction fit.

Description

BRIEF DESCRIPTION OF FIGURES

[0049] Aspects and embodiments of the disclosure will be understood more fully from the detailed description given below and from the accompanying drawings of various aspects and embodiments of the disclosure, which, however, should not be taken to limit the disclosure to the specific aspects or embodiments, but are for explanation and understanding.

[0050] FIG. 1A illustrates a natural nail, in accordance with some embodiments of the disclosure.

[0051] FIG. 1B illustrates a top view of a mounting portion attached to a natural nail, in accordance with some embodiments of the disclosure.

[0052] FIG. 1C illustrates a top view of an artificial nail showing the mounting portion and extension portion in a fully engaged state on a natural nail, in accordance with some embodiments of the disclosure.

[0053] FIG. 1D illustrates a distal end view of the mounting portion in an inverted orientation with the bottom side facing upward, showing the recess feature, in accordance with some embodiments of the disclosure.

[0054] FIG. 1E illustrates extension portions having different nail body shapes, in accordance with some embodiments of the disclosure.

[0055] FIG. 1F illustrates a set of mounting portions in a disconnected state, in accordance with some embodiments of the disclosure.

[0056] FIG. 1G illustrates a set of extension portions in a disconnected state, in accordance with some embodiments of the disclosure.

[0057] FIG. 1H illustrates artificial nail assemblies showing mounting portions and extension portions in various engagement states, in accordance with some embodiments of the disclosure.

[0058] FIG. 1I illustrates a top view of a mounting portion attached to a natural nail in a reversed configuration, in accordance with some embodiments of the disclosure.

[0059] FIG. 1J illustrates a distal end view of the mounting portion in an inverted orientation with the bottom side facing upward, showing the projection feature, in accordance with some embodiments of the disclosure.

[0060] FIG. 1K illustrates extension portions having different nail body shapes in the reversed configuration, in accordance with some embodiments of the disclosure.

[0061] FIG. 1L illustrates a proximal end view of an extension portion showing a recess feature, in accordance with some embodiments of the disclosure.

[0062] FIG. 1M illustrates a top view of a mounting portion attached to a natural nail, in accordance with some embodiments of the disclosure.

[0063] FIG. 1N illustrates a distal end view of the mounting portion showing the projection features, in accordance with some embodiments of the disclosure.

[0064] FIG. 1O illustrates extension portions having different nail body shapes, in accordance with some embodiments of the disclosure.

[0065] FIG. 1P illustrates a bottom view of the extension portions showing recess feature, in accordance with some embodiments of the disclosure.

[0066] FIGS. 2A-2D illustrate the artificial nail assembly in various engagement states, showing the mounting portion attached to a natural nail and the progressive engagement of the extension portion from a disconnected state through an intermediate state to a final engaged state, in accordance with some embodiments of the disclosure.

[0067] FIGS. 3A-3E illustrate detailed views of the mounting portion of the artificial nail assembly, in accordance with some embodiments of the disclosure.

[0068] FIGS. 3F-3H illustrate detailed views of the extension portion of the artificial nail assembly, in accordance with some embodiments of the disclosure.

[0069] FIGS. 3I-3J illustrate detailed views of the artificial nail assembly in a fully engaged state, showing the mounting portion and extension portion joined together, in accordance with some embodiments of the disclosure.

[0070] FIGS. 4A-4U illustrate alternative configurations of the mounting portion and extension portion components, in accordance with some embodiments of the disclosure.

[0071] FIG. 5 illustrates various alternative configurations of mounting portions and extension portions, in accordance with some embodiments of the disclosure.

[0072] FIGS. 6A and 6B illustrate top and bottom views of a set of artificial nails, respectively, in accordance with some embodiments of the disclosure.

[0073] FIGS. 7A-7D illustrate the artificial nail assembly in various engagement states for the multi nail embodiment, showing the mounting portion attached to a natural nail and the progressive engagement of the extension portion from a disconnected state through an intermediate state to a final engaged state, in accordance with some embodiments of the disclosure.

[0074] FIGS. 8A-8E illustrate detailed views of the mounting portion of the artificial nail assembly, in accordance with some embodiments of the disclosure.

[0075] FIG. 8F illustrates a top view of the mounting portion with a tab attached to the distal end, in accordance with some embodiments of the disclosure.

[0076] FIGS. 8G-8H illustrate detailed views of the extension portion of the artificial nail assembly, in accordance with some embodiments of the disclosure.

[0077] FIG. 8I illustrates a bottom view of the artificial nail assembly showing the mounting portion and extension portion in a fully engaged state, in accordance with some embodiments of the disclosure.

[0078] FIG. 8J illustrates a top view of the artificial nail assembly showing the mounting portion and extension portion in a fully engaged state, in accordance with some embodiments of the disclosure.

[0079] FIGS. 8K-8P illustrate extension portions with different nail body shapes having recess features as previously described, in accordance with some embodiments of the disclosure.

[0080] FIGS. 9A-9D illustrate profile views of the mounting portion and extension portion in various engagement states, showing the mechanical advantage provided by positioning projection features toward the proximal end for enhanced retention, in accordance with some embodiments of the disclosure.

[0081] FIGS. 10A-10B illustrate alternative configurations of projection features for mounting portions, in accordance with some embodiments of the disclosure.

[0082] FIGS. 11A-11G illustrate a reverse configuration of the artificial nail assembly where the mounting portion includes a recess feature and the extension portion includes a projection feature, in accordance with some embodiments of the disclosure.

[0083] FIGS. 12A and 12B illustrate top and bottom views of a set of artificial nails, respectively, in accordance with some embodiments of the disclosure.

[0084] FIGS. 13A-13G illustrate elements of a three-part artificial nail assembly, in accordance with some embodiments of the disclosure.

[0085] FIG. 14 illustrates a method of applying an artificial nail assembly to a user's natural nail, in accordance with some embodiments of the disclosure.

DETAILED DESCRIPTION

[0086] The following description sets forth exemplary aspects of the present disclosure. It should be recognized, however, that such description is not intended as a limitation on the scope of the present disclosure. Rather, the description also encompasses combinations and modifications to those exemplary aspects described herein.

[0087] A manicure generally refers to a cosmetic beauty treatment for the hands and fingernails, and a pedicure refers to a cosmetic beauty treatment for the feet and toenails. A manicure or pedicure can be a meticulous process that requires skill, time, and attention to detail from a professional nail technician. The process typically begins with cleaning and preparing the hands and nails, which may include soaking to soften the skin and nails, trimming or pushing back the cuticles, and shaping and filing the nails to a desired length and style. Exfoliation and moisturization may also be performed to smooth and hydrate the skin and cuticles.

[0088] Application of nail coatings is an important step of the manicure process. For traditional nail polish, a base coat is first applied to protect the natural nail and enhance polish adhesion. One or more colored polish layers are then applied and followed by a topcoat that seals and protects the color while providing a glossy finish. For gel nails, the process involves applying a base gel layer, which is cured under an ultraviolet (UV) or light-emitting diode (LED) lamp. Subsequent gel color layers are applied and cured in succession, and a top gel coat is applied and cured to seal the color and add shine. Gel nails are valued for their durability and chip resistance. Artificial nails, such as acrylic nails, gel nails, or extensions, may be applied to lengthen the natural nail and/or provide a foundation for coatings or nail art.

[0089] Depending on the complexity of the design, a professional manicure can require significant time to complete, while gel and artificial nail applications may take even longer due to the curing and layering process. The cost of such services can also be high. Skilled application is critical to achieve a uniform appearance, prevent lifting, and avoid damage to the natural nail. However, manicures, pedicures, and artificial nails are semi-permanent and generally cannot be easily altered without undergoing a full removal and reapplication process, which can damage or destroy the existing nail work. This presents challenges for individuals who wish to change their nail appearance frequently or who participate in activities incompatible with long or decorated nails. Furthermore, changing nail styles or colors is difficult and time-consuming because of the complexity of the application and removal processes.

[0090] Many individuals work with their hands, play sports, or engage in other activities where long or elaborate nails are impractical. Such individuals may need to remove nail enhancements for certain periods and reapply them later, which is time-consuming, costly, and potentially damaging to the natural nails. Alternatives to professional manicures and artificial nail applications include do-it-yourself (DIY) at-home manicures and press-on nails.

[0091] While these alternatives may be more cost-effective and convenient, they often lack the precision and durability of professionally applied nail enhancements. At-home manicures can result in uneven shaping, improper cuticle care, and inconsistent coating application, leading to streaks, uneven edges, or shorter-lasting results. Press-on nails, though easy to apply, may not fit properly, may detach easily, and often fail to provide the same natural appearance or strength as professionally applied systems. Additionally, both at-home manicures and press-on nails share the same drawback of being semi-permanent and requiring complete removal and reapplication for style or color changes.

[0092] Aspects of the disclosure address the above challenges as well as others by providing an artificial nail system with interchangeable components. In some embodiments, the artificial nail (also referred to as artificial nail assembly herein) can include a mounting portion and an extension portion that are configured to releasably engage with one another. The mounting portion can include a base having a first surface configured to attach to a natural nail and a first connector interface. The extension portion can include a nail body and a second connector interface configured to engage with the first connector interface of the mounting portion to releasably secure the extension portion to the mounting portion. In some embodiments, when the mounting portion and extension portion are engaged, the exterior surface of the mounting portion and the exterior surface of the extension portion may together form a continuous and unified exterior surface of the artificial nail. In some embodiments, the engagement between the mounting portion and the extension portion is configured such a seam or junction or transition between the two portions is substantially invisible when viewed from the exterior, thereby providing the appearance of a continuous, professional-quality artificial nail.

[0093] For example and in some embodiments, the artificial nail system may allow a user to apply the mounting portion to their natural nail once and then easily swap between different extension portions throughout the day or week without removing the mounting portion. For instance, a user may attach a short, natural-looking extension portion for work activities and later replace it with a longer, decoratively designed extension portion for evening events. The connector interfaces of the mounting portion and the extension portion may provide a secure connection that maintains the extension portion in place during normal activities while still allowing for easy removal and replacement when desired. In some cases, the artificial nail system may enable users to change nail colors, lengths, or designs in seconds rather than requiring hours of professional application or removal processes.

[0094] In some embodiments, the connector interfaces can provide complementary engagement features such as recess features and projection features. For example, the first connector interface of the mounting portion can include a recess feature extending inwardly, while the second connector interface of the extension portion can include one or more projection features that extend outwardly. The recess feature can include a cavity formed within the base of the mounting portion that is configured to receive the one or more projection features. In some embodiments, a pillar can be disposed within the cavity to provide additional structural support and alignment. In some embodiments, the pillar may be recessed within the cavity to create a socket configuration for enhanced engagement with the projection features.

[0095] In some embodiments, the base of the mounting portion may include a curved profile (e.g., at the distal end) that conforms to the natural nail curvature, with the cavity oriented at the distal end of the base to facilitate engagement with the extension portion. In some embodiments, the base of the mounting portion may include a substantially flat or straight profile at the distal end to accommodate different natural nail shapes or user preferences.

[0096] In some embodiments, the projection features can include one or more prongs. The one or more prongs can be inserted into the recess features, e.g., cavity, of the mounting portion that is attached to the natural nail. In some embodiments, the prongs can be configured with various cross-sectional profiles to optimize engagement and stability. For example, the prongs may have circular, oval, rectangular, or cruciform (cross-shaped) cross-sections. In some embodiments, the cruciform configuration can provide enhanced rotational stability and resistance to lateral movement within the cavity.

[0097] In some embodiments, the prongs can be dimensioned to provide a friction fit or interference fit within the cavity, creating secure retention while still allowing for intentional removal and replacement of the extension portion. In some embodiments, the prongs can taper from a larger diameter or width near the nail body toward a smaller dimension at the insertion end, facilitating easier initial insertion while providing increased retention as the prongs are fully seated within the cavity. The tapering can be gradual along the length of the prongs or can include stepped transitions to create distinct engagement zones.

[0098] In some embodiments, the prongs can include one or more feedback features, such as surface features to enhance retention and/or provide tactile and/or audible feedback during engagement. For example, one or more of the prongs can include a detent, protrusion, and/or spherical feature configured to seat within a corresponding indentation or recess in the cavity wall of the mounting portion. The feedback features can create a positive engagement mechanism that produces an audible click and/or tactile snap when the extension portion reaches the final engaged state, providing confirmation to the user that proper attachment has been achieved.

[0099] In some embodiments, the mounting portion and extension portion can be configured for multiple engagement states, including a disconnected state, an intermediate state where the extension portion is partially engaged, and a final engagement state where the components are fully secured. In some embodiments, the extension portion can be removed by applying a separation force in a direction opposite the engagement path.

[0100] In embodiments with multiple prongs, the prongs can be arranged in various configurations to optimize stability and load distribution. For instance, two prongs can be positioned on or near opposite lateral sides of the extension portion, or multiple prongs can be arranged in an array along the proximal end of the extension portion. In some embodiments, the spacing and positioning of multiple prongs can be selected to provide balanced support and prevent rocking or tilting of the extension portion relative to the mounting portion.

[0101] In some embodiments, the extension portion is engaged with the mounting portion through an axial, oblique or curved insertion motion, where the one or more projection features are inserted into the recess feature along a respective longitudinal, angled or curved path. In some embodiments, the engagement direction may vary depending on the shape and curvature of the mounting portion and the connector interface geometry.

[0102] In some embodiments, the projection features can include one or more lateral projections (also referred to as wings or edge extensions herein) disposed adjacent to the lateral sides of the extension portion. In some embodiments, the lateral projections are smaller than the prong(s) which are positioned (e.g., sandwiched) therebetween. The lateral projections can be inserted into the recess feature of the mounting portion to minimize gaps between the mounting portion and extension portion, reducing the potential for hair or debris entanglement.

[0103] Alternatively and in some embodiments, the connector interface configuration of the mounting portion and extension portion can be reversed, with the mounting portion having one or more projection features and the extension portion having one or more recess features.

[0104] In some embodiments, the first surface of the base can include an adhesive layer (e.g., pre-adhesive layer) for attachment to the natural nail. The adhesive layer can include one or more of a light-curable material, pressure-sensitive adhesive, heat-activatable adhesive, or resin. A removable cover can be attached to the exterior surface of the adhesive layer to protect it prior to use. Alternatively or additionally, the first surface of the base can include a texture configured to promote adhesion to the natural nail, in some embodiments.

[0105] In some embodiments, the artificial nail system can be provided as a kit including a set of mounting portions and a set of extension portions. The mounting portions can have different sizes corresponding to different natural nail geometries, allowing for customized fit. In some embodiments, the kit can include multiple sets of extension portions having different shapes, colors, or designs that are all configured to engage with the same set of mounting portions. This allows users to change their nail appearance by simply swapping extension portions without removing the mounting portions from their natural nails.

[0106] Aspects of the disclosure also address the above challenges by providing an artificial nail system with interchangeable components with interlocking connector features. In some embodiments, the artificial nail can include a mounting portion having a base with a first surface configured to attach to a natural nail and a second surface opposite the first surface. One or more projection features can extend outwardly from the second surface of the base, where the projection features define a first connector interface configured to engage with a second connector interface of an extension portion to releasably secure the extension portion to the mounting portion. In some embodiments, when the extension portion and mounting portion are fully engaged, the mounting portion may be concealed beneath the extension portion, creating a seamless appearance where only the extension portion is visible from the exterior view (e.g., forms the entirety of the exterior surface of the artificial nail).

[0107] In some embodiments, the mounting portion can include a first end (e.g., proximal end) opposite a second end (e.g., distal end) configured to attach adjacent to a cuticle region of the natural nail. In some embodiments, the one or more projection features can extend along a longitudinal axis between the first end and the second end. In some embodiments, the projection features can include a single projection extending along the longitudinal axis. In other embodiments, the projection features can include multiple projection features disposed in a spaced relation across the second surface of the base. In some embodiments, the mounting portion can be curved like a cuticle at the proximal end to better conform to the natural nail anatomy and provide improved comfort and appearance.

[0108] In some embodiments, the base can include a first curvature along the longitudinal axis. In some embodiments, one or more of the projection features can include a second curvature along the longitudinal axis that is greater than the first curvature. In some embodiments, the difference in curvature can enhance the engagement and retention characteristics. In some embodiments, the projection feature having a greater curvature than the outer surface of the mounting portion creates a curved taper where the flange tapers until it disappears at or near the proximal end, providing a smooth transition and operable retention. In some embodiments, one or more of the projection features can taper in height from the first end toward the second end of the mounting portion, providing a graduated engagement profile.

[0109] In some embodiments, each projection feature can include a top surface and opposing sidewalls. In some embodiments, the opposing sidewalls of at least one projection feature can taper towards the base, creating a dovetail-like configuration. In some embodiments, the dovetail configuration can extend close to the proximal end near the cuticle region, where the further the dovetail extends toward the proximal end, the less the extension portion will lift when pressure is applied to the nail extension tip. In some embodiments, the opposing sidewalls of at least one projection feature do not taper (e.g., are substantially parallel to one another). In some embodiments, the projection features may be configured in a T-shaped configuration, providing similar retention characteristics with different engagement mechanics. When engaged, the projection features can be concealed beneath the extension portion, maintaining a natural appearance.

[0110] In some embodiments, one or more of the projection features can include one or more flanges configured to retain the extension portion on the mounting portion, providing additional security against accidental detachment. In some embodiments, the one or more flanges can extend laterally outwardly from the sidewall(s).

[0111] In some embodiments, the flanges can include lateral projections, overhangs, or lip-like structures that extend outwardly from the projection features to create mechanical interference with corresponding features of the extension portion. In some embodiments, the flanges can be positioned along the sidewalls of the projection features and can be configured to engage with undercut regions or grooves in the recess features of the extension portion, creating a mechanical interlock that resists separation forces.

[0112] In some embodiments, the projection features may be configured without flanges and rely on angular orientation or geometric arrangement to retain the extension portion on the mounting portion. For example, the projection features can be angled or inclined relative to the base surface to create a wedging action that secures the extension portion in place. In some cases, the projection features may be oriented at an acute angle to the longitudinal axis of the mounting portion, creating a bias force that urges the extension portion toward a locked position when engaged. In some embodiments, the mounting portion may include just the projection features with no or limited base portion as an alternative configuration, providing a minimalist design that still achieves secure engagement.

[0113] In some embodiments, both flanged and non-flanged projection features may be used together on the same mounting portion to provide complementary retention mechanisms. For example, a mounting portion may include a central flanged projection feature positioned along the longitudinal centerline of the base, with one or more non-flanged projection features positioned on opposite lateral sides.

[0114] In some embodiments, the extension portion can include a nail body and one or more recess features that define a second connector interface configured to engage with the first connector interface of the mounting portion. In some embodiments, the first and second connector interfaces can provide a friction fit when engaged. In some embodiments, the first and second connector interfaces can form a dovetail-type engagement to retain the extension portion on the mounting portion.

[0115] In some embodiments, the base of the mounting portion can include or be formed from a nail sticker, and the projection features can be attached to or integrally formed with the nail sticker. In some embodiments, the nail sticker can be formed of a first material while the projection features are formed of a second material different than the first material. In some embodiments, the mounting portion may include tabs for application, since the mounting portion is typically short and the tabs provide assistance with handling during installation and positioning on the natural nail.

[0116] In some embodiments, the first surface of the base can include a texture configured to promote adhesion to the natural nail. In some embodiments, the first surface of the base can include an adhesive layer (e.g., pre-adhesive layer) such as a light-curable adhesive, pressure-sensitive adhesive, heat-activatable adhesive, or resin pre-adhesive. In some embodiments, a removable cover may be removably coupled to the adhesive layer to protect the adhesive layer prior to use.

[0117] In some embodiments, the mounting portion and extension portion can be configured for at least three states: a disconnected state, an intermediate state, and a final engaged state. In some embodiments, the artificial nail can include a feedback feature configured to provide feedback indicating the transition from the intermediate state to the final engaged state. The feedback can include at least one of an audible signal or a tactile signal.

[0118] In some embodiments, the connector interface configuration may be reversed, with the extension portion having one or more projection features that extend outwardly and the mounting portion having one or more recess features that extend inwardly to receive the projection features. In such configurations, the projection features of the extension portion may be inserted into corresponding recess features of the mounting portion to achieve the releasable engagement. This reversed configuration may provide alternative engagement characteristics while maintaining the same functional benefits of secure attachment and easy interchangeability.

[0119] In some embodiments, the artificial nail system may include a three-piece configuration that utilizes the same mounting portion described above but incorporates an intermediate adapter portion (e.g., also referred to as adapter portion herein) in addition to the extension portion. The intermediate adapter portion may include a nail body that is typically shorter and thinner than the extension portion, and may feature the same reciprocal connector interface configured to engage with the mounting portion. In some embodiments, the intermediate adapter portion may include an additional connector interface or attachment surface configured to receive an artificial nail, such as a press-on nail, gel nail, or acrylic nail extension (e.g., having no connector interface).

[0120] In some embodiments, this three-piece system may allow users to combine the benefits of the interchangeable mounting system with existing artificial nail products. For example, a user may attach the mounting portion to their natural nail, engage the intermediate adapter portion with the mounting portion, and then apply a conventional artificial nail to the intermediate adapter portion using standard nail adhesives or attachment methods. This configuration may provide compatibility with a wider range of existing artificial nail products while maintaining the convenience of the removable mounting system for the underlying components.

[0121] The system can be provided as a kit with mounting portions of different shapes, sizes, and/or curvatures corresponding to different natural nail geometries, along with extension portions having complementary recess features. In some embodiments, the kit may include mounting portions sized for various finger and toenail dimensions, ranging from small to extra-large configurations to accommodate different users. In some embodiments, the extension portions in the kit may feature standardized connector interfaces that are compatible with all mounting portion sizes, allowing for universal interchangeability across the system. This modular approach can enable users to mix and match components to achieve customized nail appearances while maintaining secure attachment regardless of their natural nail geometry.

[0122] In some embodiments, one or more components of the artificial nail system (e.g., the mounting portion, the extension portion, or both) can be formed of a rigid or semi-rigid polymeric material such as acrylonitrile butadiene styrene (ABS), polycarbonate, acrylic, polymethyl methacrylate (PMMA), polyurethane, UV-curable gel materials, fiberglass, silk wrap materials, dip powder materials, or similar resins. In some embodiments, the mounting portion may be formed of a more flexible polymeric material than the extension portion to allow for a secure interference fit without breakage and to facilitate installation and removal. The components can be formed by injection molding, additive manufacturing, three-dimensional printing or other molding processes.

[0123] It can be noted that the technology described herein may be used as a DIY system or in professional settings. The artificial nail systems described herein can be used to apply artificial nails to the natural nails of the hands and/or toes, providing users with professional-quality results and the flexibility to change their nail appearance as desired.

[0124] In some embodiments, the artificial nail components may include structural relationships between sides. In some embodiments, the lateral sides extend between and connect the proximal and distal ends. In some embodiments, the top and bottom sides extend between and connect the lateral sides. In some embodiments, the proximal and distal ends may extend between and connect the top and bottom sides. These structural relationships may provide the three-dimensional form of the mounting portion, extension portion, and other components described herein.

[0125] As used herein, the terms proximal and distal refer to relative positions with respect to the user's body when the artificial nail assembly is applied to a natural nail. The proximal direction or proximal end refers to the direction toward or the end closer to the user's body, including toward the finger and cuticle region. The distal direction or distal end refers to the direction away from or the end farther from the user's body, including toward the free edge of the natural nail.

[0126] As used herein, the terms side and end may be used interchangeably to refer to surfaces or boundaries of the artificial nail components. In some embodiments, components may be described as having six sides, including what may alternatively be referred to as ends, lateral sides, top side, and bottom side. This terminology is used for descriptive purposes and is not intended to limit the geometric relationships or orientations of the components.

[0127] FIG. 1A illustrates a natural nail, in accordance with some embodiments of the disclosure. Components of natural nail 100 on a human finger are illustrated. The anatomy of a natural nail 100 (also referred to as nail herein) includes many components. Each component can serve a specific function. The nail edge 102 can refer to the distal end of the nail plate 104 that can extend beyond the fingertip. The nail edge can be the part of the natural nail 100 that is most often trimmed or filed during grooming. The nail plate 104 can refer to the hard and keratinous surface of the natural nail 100. The nail plate 104 sits above the nail bed and serves as a protective barrier for the sensitive tissues underneath.

[0128] The nail fold 106 (also referred to as lateral nail fold herein) can refer to skin that frames the sides of the nail plate. The nail fold can also include skin that frames the base of the nail plate 104 (e.g., proximal nail fold). The lateral nail fold can protect the sides of the nail plate 104 and the underlying nail bed from physical trauma and environmental exposure to help prevent injuries and infections that can damage the natural nail 100 or surrounding tissue. The lateral nail fold can provide structural support for the nail plate 104 and can provide a barrier to pathogens. It can be appreciated that a lateral nail fold can be present at both lateral sides of the nail plate 104. The proximal nail fold can protect the emerging natural nail as it grows from the matrix. The cuticle 110 can extend from the proximal nail fold toward the nail edge 102.

[0129] The lunula 108 can refer to a visible part of the nail matrix and can appear as a crescent-shaped, whitish area at the base of the nail plate 104. The lunula structure can aid in producing new cells that make up the nail plate 104. The cuticle 110 can include a thin layer of dead skin cells that overlaps the nail plate 104 near or at the proximal nail fold (and/or lateral nail fold). The cuticle 110 can protect the new keratin cells as they form at the base of the natural nail 100, preventing bacteria and other pathogens from entering the matrix area.

[0130] FIGS. 1B-1L illustrate configurations of the mounting portion and extension portion components, in accordance with some embodiments of the disclosure. The features and elements described in connection with FIGS. 1B-1L may be further described in connection with FIGS. 2A-6B.

[0131] FIG. 1B illustrates a top view of a mounting portion 112 attached to a natural nail, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 112 may include a first lateral side 114, a second lateral side 116, a proximal end 118, a distal end 120, a top side 122, and a bottom side 124. In some embodiments, a longitudinal axis 126 may extend along the length of the mounting portion 112. Longitudinal axis 126 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 126 is not the centerline reference. In some embodiments, a horizontal axis 128 may extend across the mounting portion 112. Horizontal axis 128 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 128 is not the midline reference. In some embodiments, the mounting portion 112 can include a connector interface 133 at the distal end 120 of the mounting portion 122. In some embodiments, the connector interface 133 of the mounting portion 112 is configured to engage with the connector interface of the extension portion to releasably secure the extension portion to the mounting portion. In some embodiments, the mounting portion 112 may include a base 130 having an exterior surface 132. In some embodiments, a recess feature 134 (of the connector interface 133) may be positioned at the distal end 120, as further described in connection with FIGS. 3A-3E. Recess feature is also referred to as female portion(s)herein.

[0132] FIG. 1C illustrates a top view of an artificial nail 136 (also referred to as artificial nail assembly herein) showing the mounting portion 112 and extension portion 138 in a fully engaged state on a natural nail, in accordance with some embodiments of the disclosure. In some embodiments, when the mounting portion 112 and extension portion 138 are fully engaged, the artificial nail 136 may include an exterior surface 135 formed by the combination of the exterior surface 132 of the mounting portion 112 and the exterior surface of the extension portion 138. In some embodiments, the internal connector features may be concealed within the assembled structure when the components are joined together. In some embodiments, the seamless integration creates the appearance of a single, continuous artificial nail structure while maintaining the functional benefits of interchangeable components, as further described in connection with FIGS. 3I-3J.

[0133] FIG. 1D illustrates a distal end view of the mounting portion 112 in an inverted orientation with the bottom side 124 facing upward, showing the recess feature 134, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 134 may include a cavity 137 configured to receive a projection feature (also referred to as projection(s) or male portion(s) herein) from an extension portion. In some embodiments, the cavity 137 may include one or more cavities positioned at the distal end 120 of the mounting portion 112, as further described in connection with FIGS. 3A-3E. In other embodiments, the recess feature 134 can include one or more cavities.

[0134] FIG. 1E illustrates extension portions 160, 173, and 177 having different nail body shapes, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 160 may include a first lateral side 161A, a second lateral side 161B, a proximal end 161C, a distal end 161D, a top side 161E, and a bottom side. In some embodiments, a longitudinal axis 161G may extend along the length of the extension portion 160. Longitudinal axis 161G is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 161G is not the centerline reference. In some embodiments, a horizontal axis 161H may extend across the extension portion 160. Horizontal axis 161H is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 161H is not the midline reference. In some embodiments, the extension portion 160 may include a nail body 161I having an exterior surface 161J. In some embodiments, the extension portion 160 can include a connector interface 175. In some embodiments, the connector interface of each extension portion may include a projection feature 166 extending proximally from the nail body 161I. In some embodiments, the projection feature 166 may include one or more prongs 168 configured for insertion into the cavity 137 of the mounting portion 112, as further described in connection with FIGS. 3F-3H.

[0135] FIG. 1F illustrates a set of mounting portions 170A, 170B, 170C, 170D, and 170E in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portions may be attached to natural nails and may include different sizes corresponding to different natural nail geometries. In some embodiments, the mounting portions may include polish on their exterior surfaces. In some embodiments, the mounting portions may include nail art on their exterior surfaces. In some embodiments, the mounting portions may show the cavity 137 and/or curvature along the horizontal axis 128, as further described in connection with FIGS. 6A-6B.

[0136] FIG. 1G illustrates a set of extension portions 172A, 172B, 172C, 172D, and 172E in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the extension portions may include decorative features 174 such as polish and/or nail art on their exterior surfaces. In some embodiments, the extension portions may be different sizes configured to correspond with the different sized mounting portions for different fingers, as further described in connection with FIGS. 6A-6B.

[0137] FIG. 1H illustrates artificial nail assemblies showing mounting portions and extension portions in various engagement states, in accordance with some embodiments of the disclosure. As illustrated, four artificial nails (e.g., artificial nail assemblies) are shown in a fully engaged state where there is no substantive gap between the mounting portion and extension portion. As illustrated, one artificial nail may be in an intermediate state where the mounting portion and extension portion are partially engaged with a gap 176 visible between mounting portion and extension portion. In some embodiments, the mounting portions may include decorative art on their exterior surfaces, as further described in connection with FIGS. 6A-6B.

[0138] FIG. 1I illustrates a top view of a mounting portion 180 attached to a natural nail in a reversed configuration, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 180 may include a first lateral side 182, a second lateral side 184, a proximal end 186, a distal end 188, a top side 190, and a bottom side 192. In some embodiments, mounting portion 180 can include a connector interface 189. In some embodiments, the connector interface 189 can include a projection feature 194 may extend outwardly from base 187 of the mounting portion 180. In some embodiments, the projection feature 194 may include one or more prongs 196, as further described in connection with FIGS. 4T-4U.

[0139] FIG. 1J illustrates a distal end view of the mounting portion 180 in an inverted orientation with the bottom side 192 facing upward, showing the projection feature 194, in accordance with some embodiments of the disclosure. In some embodiments, the projection feature 194 may extend outwardly from the base 187 of the mounting portion 180, as further described in connection with FIGS. 4T-4U.

[0140] FIG. 1K illustrates extension portions 198, 185, and 197 having different nail body shapes in the reversed configuration, in accordance with some embodiments of the disclosure. In some embodiments, each extension portion may include a first lateral side, a second lateral side, a proximal end, a distal end, a top side, and a bottom side. In some embodiments, the extension portions can include a connector interface. In some embodiments, the connector interface can include a recess feature positioned on the bottom side 191 and may not be visible from the top view, as further described in connection with FIGS. 4T-4U.

[0141] FIG. 1L illustrates a proximal end view of an extension portion showing a recess feature 195, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 195 of the connector interface 199 may include one or more cavities 193 configured to receive the projection feature 194 of the mounting portion 180, as further described in connection with FIGS. 4T-4U.

[0142] FIGS. 1M-1P illustrate alternative configurations of the mounting portion and extension portion components, in accordance with some embodiments of the disclosure. The features and elements described in connection with FIGS. 1M-1P are further described in connection with FIGS. 7A-13G.

[0143] FIG. 1M illustrates a top view of a mounting portion 140 attached to a natural nail, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 140 may include a first lateral side 141, a second lateral side 142, a proximal end 143, a distal end 144, a top side 145, and a bottom side. In some embodiments, a longitudinal axis 147 may extend along the length of the mounting portion 140. Longitudinal axis 147 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 147 is not the centerline reference. In some embodiments, a horizontal axis 148 may extend across the mounting portion 140. Horizontal axis 148 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 148 is not the midline reference. In some embodiments, the mounting portion 140 may include a base 149 having an exterior surface 150. In some embodiments, one or more projection features 151 may be positioned on (e.g., extend outwardly from) the base 149, as further described in connection with FIGS. 8A-8E.

[0144] FIG. 1N illustrates a distal end view of the mounting portion 140 showing the projection features 151, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 140 can include a connector interface 179. In some embodiments, the projection features 151 may extend outwardly from the base 149 and may include flanges 152 and sidewalls 153. In some embodiments, the projection features 151 may be triangular shaped with the wide side positioned upward. In some embodiments, there may be one or more projection features 151, as further described in connection with FIGS. 8A-8E.

[0145] FIG. illustrates extension portions 154, 155, and 156 having different nail body shapes, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 154 may include a first lateral side 157, a second lateral side 158, a proximal end 159, a distal end 169, and a top side 171. In some embodiments, a longitudinal axis 162 may extend along the length of the extension portion 154. Longitudinal axis 162 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 162 is not the centerline reference. In some embodiments, a horizontal axis 163 may extend across the extension portion 154. Horizontal axis 163 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 163 is not the midline reference. In some embodiments, the extension portion 154 may include a nail body 164 having an exterior surface 165 that forms the exterior surface of the artificial nail, as further described in connection with FIGS. 8G-8H.

[0146] FIG. 1P illustrates a bottom view of the extension portions 154, 155, and 156 showing recess feature 166, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 166 may include one or more cavities 167 configured to receive the projection features 151 of the mounting portion 140. In some embodiments, the recess feature 166 may be positioned on a bottom side 168 of the extension portions, as further described in connection with FIGS. 8G-8H.

[0147] FIGS. 2A-2D illustrate the artificial nail assembly in various engagement states, showing the mounting portion attached to a natural nail and the progressive engagement of the extension portion from a disconnected state through an intermediate state to a final engaged state, in accordance with some embodiments of the disclosure. In some embodiments, such as those illustrated in FIGS. 2A-2D, the engagement motion occurs along the horizontal axis of the artificial nail assembly, with the extension portion being inserted from the distal end direction toward the proximal end of the mounting portion, following the natural curvature of the nail surface.

[0148] FIG. 2A illustrates the mounting portion 200 attached to a natural nail 100 in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 200 may include a base 202 having a first surface configured to attach to the natural nail 100 and a second surface forming part of an exterior surface of the artificial nail. In some embodiments, the mounting portion 200 may include a first end 212 (e.g., proximal end) and a second end 214 (e.g., distal end), where the first end 212 may be configured to mount adjacent to a cuticle region of the natural nail 100. In some embodiments, a recess feature 216 may be formed at the second end 214 of the base 202, extending inwardly to define a first connector interface 204A. In some embodiments, the exterior surface of the base 202 may be provided without polish or decorative features. In some embodiments, features such as polish and/or decorative features may be applied by the user at application or pre-applied at manufacture. The mounting portion 200 may be securely adhered to the natural nail 100 while remaining ready to receive an extension portion.

[0149] FIG. 2B illustrates the mounting portion 200 and extension portion 206 in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 206 may include a nail body 208 and a second connector interface 204B configured to engage with the first connector interface 204A of the mounting portion 200. The second connector interface 204B may include one or more projection features 218 that extend outwardly from the extension portion 206. In some embodiments, the projection features 218 may include one or more prongs 220 configured for insertion into the recess feature 216 of the mounting portion 200. In some embodiments, the extension portion 206 may also include lateral projections 222 (also referred to as wings) disposed adjacent to lateral sides of the extension portion 206. In some embodiments, the nail body 208 may feature polish and decorative art 224 on its exterior surface, providing aesthetic enhancement to the artificial nail assembly. The mounting portion 200 may remain attached to the natural nail 100 while the extension portion 206 is positioned for engagement.

[0150] FIG. 2C illustrates the artificial nail assembly in an intermediate state where the extension portion 206 is partially inserted into the mounting portion 200, in accordance with some embodiments of the disclosure. The one or more prongs 220 of the extension portion 206 may be partially inserted into the recess feature 216 of the mounting portion 200, but the components may not yet be fully engaged. For example, in some embodiments, a gap 226 may be visible between the exterior surface of the base 202 and the exterior surface of the nail body 208, indicating that the extension portion 206 has not reached its final engaged position. In some embodiments, this intermediate state may allow for alignment and positioning of the extension portion 206 relative to the mounting portion 200 before achieving full engagement. The mounting portion 200 may remain securely attached to the natural nail 100 throughout this engagement process.

[0151] FIG. 2D illustrates the artificial nail assembly in a final engaged state where the extension portion 206 is fully engaged with the mounting portion 200, in accordance with some embodiments of the disclosure. In some embodiments, the one or more prongs 220 may be fully inserted into the recess feature 216. In some embodiments, the lateral projections 222 may be fully inserted into the recess feature 216 and positioned to minimize lateral gaps between the mounting portion 200 and extension portion 206. In some embodiments, the exterior surface of the base 202 and the exterior surface of the nail body 208 may together form an exterior surface (e.g., continuous and unified exterior surface) of the artificial nail, creating a seamless appearance. The gap 226 visible in the intermediate state may be substantially eliminated, and the engagement between the mounting portion 200 and extension portion 206 may be configured such that a seam or junction between the two portions is substantially invisible when viewed from the exterior. The artificial nail assembly may provide the appearance of a continuous, professional-quality artificial nail while maintaining the functional benefits of interchangeable components.

[0152] In some embodiments, the transition from the intermediate state to the final engaged state may be signaled by feedback features that provide confirmation to the user that proper attachment has been achieved. In some cases, the feedback may include tactile feedback, such as a snap or click sensation felt when the one or more prongs 220 reach their fully seated position within the recess feature 216. In some embodiments, the feedback may include audible feedback, such as a clicking sound produced when the extension portion 206 reaches the final engaged state. The feedback mechanism may help ensure that users achieve proper engagement and may provide confidence that the extension portion 206 is securely attached to the mounting portion 200.

[0153] In some embodiments, when the extension portion 206 is fully engaged with the mounting portion 200, the one or more prongs 220 may be concealed within the recess feature 216 of the mounting portion 200, creating a seamless exterior appearance.

[0154] FIGS. 3A-3E illustrate detailed views of the mounting portion 300 of the artificial nail assembly, in accordance with some embodiments of the disclosure. The mounting portion 300 may include the features and elements described in connection with FIGS. 2A-2D unless otherwise indicated. In some embodiments, the mounting portion 300 may be configured for engagement with an extension portion having two prongs with cross-shaped features and feedback mechanisms.

[0155] FIG. 3A illustrates a top view of the mounting portion 300 showing an exterior surface 302, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 300 may include side 304 (e.g., first lateral side 304), side 306 (e.g., second lateral side 306), end 308 (e.g., proximal end 308), end 310 (e.g., distal end 310), side 312 (e.g., top side 312), and side 313 (e.g., bottom side 313). In some embodiments, a horizontal axis 314 may extend across the mounting portion 300. Horizontal axis 314 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 314 is not the midline reference. In some embodiments, a longitudinal axis 316 may extend along the length of the mounting portion 300. Longitudinal axis 316 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 316 is not the centerline reference. The exterior surface 302 may be configured to form part of the visible surface of the artificial nail assembly when engaged with an extension portion. In some embodiments, the bottom side 313 may include a surface configured to attach to a natural nail.

[0156] In some embodiments, the mounting portion 300 may exhibit asymmetry about the horizontal axis 314, where the configuration above and below the horizontal axis 314 may differ in shape, thickness, and/or other structural characteristics. In some embodiments, the mounting portion 300 may exhibit symmetry about the longitudinal axis 316, where the configuration on either side of the longitudinal axis 316 may be substantially mirror images of one another.

[0157] In some embodiments, the base 340 of the mounting portion 300 may be configured to serve as a complete artificial nail without requiring an extension portion. In such configurations, the recess feature 318 may remain present to allow for optional attachment of extension portions when desired, but the mounting portion 300 may be dimensioned and shaped to function as a standalone artificial nail. In some embodiments, the base 340 may include decorative features, polish, and/or nail art applied directly to the exterior surface 302. This configuration may provide users with flexibility to wear the mounting portion 300 as a complete nail enhancement or to add extension portions for additional length, different colors, or alternative designs as desired.

[0158] FIG. 3B illustrates a perspective top front view of the mounting portion 300 showing recess feature 318 and cavity structures, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 300 may include a first cavity 320 and a second cavity 322 (as further illustrated with respect to FIG. 3D) configured to receive two prongs from an extension portion. In some embodiments, the recess feature 318 may be positioned at the distal end 310 of the mounting portion 300 and may extend inwardly towards the body of the base 340 (e.g., mounting portion 300) from the distal end 310. In some embodiments, the cavity structures may be dimensioned to accommodate prongs having cross-shaped cross-sectional profiles.

[0159] In some embodiments, the recess feature 318 may form a window-like opening at the distal end 310. In some embodiments, the opening is defined by four sides that create an aperture extending through the thickness of the base 340. In some embodiments, the window opening may include an upper side (corresponding to top side 312), a bottom side (corresponding to bottom side 313), and two lateral sides (corresponding to lateral sides 304 and 306) that collectively define the perimeter of the recess feature 318. In some embodiments, the four-sided window configuration may provide structural definition for the engagement interface while maintaining the integrity of the mounting portion 300.

[0160] In some embodiments, the number and structure of prongs may vary from the configuration shown in the mounting portion 300. The specific prong configuration illustrated in FIGS. 3A-3E is provided for purposes of illustration rather than limitation. In some cases, the mounting portion may be configured to receive a single prong, while in other embodiments, the mounting portion may accommodate three or more prongs depending on the desired engagement and/or structural characteristics. In some embodiments, the cross-sectional profile of the prongs may differ from the cross-shaped configuration shown, and may include circular, oval, rectangular, or other geometric profiles. In some embodiments, the prongs may have uniform cross-sections along their length, while in other embodiments, the prongs may include tapered, stepped, or variable cross-sectional profiles. Alternative prong configurations and structural variations are illustrated in subsequent figures to demonstrate the range of possible implementations within the scope of the disclosure.

[0161] FIG. 3C illustrates a right-side profile view of the mounting portion 300, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 318 may be positioned between the exterior surface 302 and a bottom surface 324 of the mounting portion 300. The exterior surface 302 is disposed opposite bottom surface 324. In some embodiments, the exterior surface 302 may include an exterior curvature 326 that may not be symmetric about the horizontal axis 314.

[0162] In some embodiments, the thickness of the mounting portion 300 between the exterior surface 302 and the bottom surface 324 may be wider at the distal end 310 than at the proximal end 308. In some embodiments, this variable thickness configuration may allow for an enlarged area at the distal end 310 to accommodate insertion of one or more projection features from an extension portion, while tapering down to be thinner near the cuticle region at the proximal end 308 for attachment to the natural nail. In some embodiments, this thickness variation may create asymmetry with respect to the horizontal axis 314, where the mounting portion 300 may be thicker below the horizontal axis 314 at the distal end 310 and gradually transition to a thinner thickness toward the proximal end 308. In some embodiments, the tapered thickness profile may provide structural support for the recess feature 318 while maintaining a comfortable and natural-feeling profile against the natural nail surface.

[0163] In some embodiments, the tapered thickness configuration may provide an aesthetically improved artificial nail by maintaining a reduced thickness at the proximal end 308, thereby preventing an undesirable bulky appearance at the cuticle region where proximal end 308 of the mounting portion 300 interfaces with the natural nail 100. In some embodiments, this graduated thickness profile and/or curvature (e.g., curvature 326) may substantially replicate the natural contour of a natural nail 100, thereby creating a substantially seamless transition from the cuticle 110 to the artificial nail assembly.

[0164] In some embodiments, the mounting portion may include a curvature that extends between the lateral sides of the mounting portion, conforming to the natural transverse curvature of the nail surface. This lateral curvature may help the mounting portion sit flush against the natural nail and/or cuticle and provide improved comfort and aesthetic appearance.

[0165] FIG. 3D illustrates a front view looking into the recess feature 318 of the mounting portion 300, in accordance with some embodiments of the disclosure. In some embodiments, a pillar 328 may separate the first cavity 320 from the second cavity 322. In some embodiments, the pillar 328 extends between the top side 312 and the bottom side 313 of the mounting portion 300. In some embodiments, the pillar 328 connects the top side 312 and the bottom side 313 of the mounting portion 300. In some embodiments, the pillar 328 extends between the top side 312 and the bottom side 313 but does not connect to at least one of the top side 312 or the bottom side 313. In some embodiments, the pillar 328 may provide lateral stability to an engaged extension portion by resisting sideways movement and preventing rocking or tilting motions during use. In some embodiments, the pillar 328 may be set back from the edge of the mounting portion, creating a recessed configuration that allows the extension portion to fit more flush against the mounting portion with improved coverage and reduced gaps. In some embodiments, the pillar 328 may also enhance the structural strength of the mounting portion 300 by providing additional material thickness and support between the first cavity 320 and second cavity 322, thereby reducing stress concentrations and improving the overall durability of the recess feature 318.

[0166] In some embodiments, an interior surface of the cavity may include texturing, micro-roughness, or other surface modifications configured to enhance frictional retention of the projection features. The interior texturing may provide additional mechanical interlocking between the cavity walls and the inserted projection features.

[0167] In some embodiments, the first cavity 320 may include reciprocal features configured to engage with prong ends, such as cross-shaped prong ends, and the second cavity 322 may include reciprocal features similarly configured. In some embodiments, the cavities 320 and 322 may include a taper 334 (e.g., step taper) that tapers toward a proximal end 308 of the mounting portion 300. In some embodiments, the cavities 320 and 322 are curved to conform with the curvature of the mounting portion 300 along the horizontal axis 314. In some embodiments, a center portion (e.g., area of pillar 328) of the mounting portion 300 at the horizontal axis 314 may be thicker than the first lateral side 304 and second lateral side 306. In some embodiments, the height (e.g., between top side 312 and bottom side 313) of an inner side 330 of each cavity 320 and 322 is greater than the height of an outer side 332 proximate the lateral sides 304 and 306, respectively.

[0168] FIG. 3E illustrates a bottom left perspective view of the mounting portion 300, in accordance with some embodiments of the disclosure. In some embodiments, the bottom surface 324 may be visible and may include a smooth configuration.

[0169] In some embodiments, the bottom surface 324 may include texturing to promote adhesion to a natural nail. In some embodiments, the bottom surface 324 may include texturing or roughening to promote adhesion to a natural nail. The surface may be roughened through sanding, etching, or other surface modification processes to increase mechanical interlocking with adhesive materials. In some embodiments, the texturing may include one or more of surface roughness, micro-patterns, or other adhesion-promoting surface features formed on the bottom surface 324 of the base 340. In some embodiments, the texture may be created through molding, etching, sanding, laser treatment, or other surface modification processes to increase the surface area available for bonding with adhesive materials or direct contact with the natural nail surface. In some embodiments, the texture can be formed at manufacture. In some embodiments, the textured surface may provide mechanical interlocking with adhesive applied to the bottom surface 324, thereby enhancing the bond strength and durability of the attachment between the mounting portion 300 and the natural nail 100. In some embodiments, the texture may include a uniform pattern across the entire bottom surface 324, while in other embodiments, the texture may be selectively applied to specific regions of the bottom surface 324 to optimize adhesion characteristics for different areas of contact with the natural nail 100.

[0170] In some embodiments, the bottom surface 324 corresponds to the bottom side 313 and is configured to attach to the natural nail. In some embodiments, the distal end 310 may be thicker than the proximal end 308, providing structural support for the recess feature 318 while maintaining a tapered profile that may conform to natural nail geometry.

[0171] In some embodiments, the adhesive layer may be applied to the bottom surface 324 at the time of manufacture, providing a ready-to-use attachment mechanism for the mounting portion 300. In some embodiments, a removable cover may be positioned over the adhesive layer to protect it from contamination, debris, or premature activation prior to application to the natural nail. In some embodiments, the removable cover may include a release liner, protective film, or backing material that can be peeled away to expose the adhesive surface when the user is ready to apply the mounting portion 300.

[0172] In some embodiments, the adhesive layer may include one or more components selected to provide secure attachment to the natural nail while allowing for eventual removal when desired. In some embodiments, the adhesive layer may include pressure-sensitive adhesives (PSAs) such as acrylic-based PSAs, rubber-based PSAs, or silicone-based PSAs that activate upon contact and pressure application. In some embodiments, the adhesive layer may include light-curable materials such as light-curable resins such as ultraviolet (UV)-curable resins, light-curable gels such as LED-curable gels or UV-curable gels, or photopolymer compositions that harden when exposed to specific wavelengths of light. In some embodiments, the adhesive layer may include heat-activatable adhesives that become tacky or flow when warmed by body temperature or external heat sources.

[0173] In some embodiments, the adhesive layer may include resin pre-adhesives such as acrylate or methacrylate resins, epoxy resins, polyurethane resins, or urethane-acrylate resins that are pre-applied and configured to form a bond upon activation by light, heat, or chemical curing. In some embodiments, the adhesive layer may include nail glue components such as cyanoacrylate adhesives, ethyl cyanoacrylate formulations, or butyl cyanoacrylate formulations. In some embodiments, the adhesive layer may include gel nail base coat materials, primer compositions, or bonding agents specifically formulated for nail applications. In some embodiments, the adhesive layer may include semi-cured gel stickers that include partially cured polymeric layers that are tacky or pliable at the time of application and configured to be further cured after placement on the natural nail. In some embodiments, the adhesive layer may include tackifying resins, plasticizers, or stabilizing agents to modify the adhesive properties and enhance performance characteristics such as flexibility, durability, or removal ease.

[0174] FIGS. 3F-3H illustrate detailed views of the extension portion 336 of the artificial nail assembly, in accordance with some embodiments of the disclosure. The extension portion 336 may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the extension portion 336 may be configured for engagement with a mounting portion having two cavities with cross-shaped reciprocal features and feedback mechanisms.

[0175] FIG. 3F illustrates a top view of the extension portion 336 showing a body 337 with an exterior surface 338, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 336 may include side 342 (e.g., first lateral side 342), side 344 (e.g., second lateral side 344), end 346 (e.g., proximal end 346), end 348 (e.g., distal end 348), side 350 (e.g., top side 350), and side 352 (e.g., bottom side 352). In some embodiments, a horizontal axis 354 may extend across the extension portion 336. Horizontal axis 354 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 354 is not the midline reference. In some embodiments, a longitudinal axis 356 may extend along the length of the extension portion 336. Longitudinal axis 356 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 356 is not the centerline reference. In some embodiments, the exterior surface 338 of the body 337 serves as part of the exterior surface of the artificial nail when the extension portion 336 is engaged with the mounting portion.

[0176] In some embodiments, the body 337 of the extension portion 336 may include a curved square shape, though alternative configurations may be implemented including oval, rectangular, almond, coffin, stiletto, or other nail shapes. In some embodiments, the extension portion 336 may include two prongs 358 and 360 extending from the body 337 towards the proximal end 346. In some embodiments, any number of prongs may be utilized depending on the desired engagement characteristics and/or structural characteristics. In some embodiments, the proximal end of the exterior surface 338 of the body 337 has a curved shape 370, such as a concave shape, that corresponds to the curved shape of the distal end of the mounting portion. In some embodiments, other shapes are possible for the proximal end of the exterior surface 338 of the body 337.

[0177] In some embodiments, the prongs 358 and 360 extending from the body 337 at the proximal end of the body 337 may include a cross-pattern configuration 362. In other embodiments, other configurations may be implemented for the prongs 358 and 360. In some embodiments, the cross-pattern configuration 362 of the prongs 358 and 360 may help stabilize the extension portion 336 within the mounting portion and may limit lateral movement during use. In some embodiments, the cross-pattern configuration 362 of the prongs 358 and 360 may provide enhanced rotational stability and resistance to twisting forces applied to the extension portion 336.

[0178] In some embodiments, the prongs 358 and 360 extending from the body 337 may include one or more feedback features 364 disposed on one or more of the prongs 358 and 360. In some embodiments, the feedback features 364 may include one or more rounded spherical features positioned on the top side 350 of one or more of prong 358 and 360. In some embodiments, two spherical features may be positioned on each prong proximal end. In some embodiments, the spherical features may be dimensioned larger than corresponding indentations or recesses in the mounting portion, creating an interference that produces the audible click and/or tactile feedback when the spherical feature seats into the recess during engagement. In other embodiments, alternative quantities and arrangements of feedback features may be implemented. In some embodiments, the one or more feedback features 364, such as the spherical features may be located on the bottom side 352 or in different areas of the prongs 358 and 360.

[0179] In some embodiments, alternative feedback features may be implemented, such as prong proximal ends that are sized slightly larger than the reciprocal cavity of the mounting portion to create an interference fit. In some embodiments, alternative feedback features may be implemented instead of or in addition to the spherical features. For example, the prongs may include ridges, grooves, annular rings or other shaped feedback features (e.g., triangles, wedges, etc.) positioned along their length that engage with corresponding features in the mounting portion cavities to provide tactile and/or audible feedback during insertion. In some embodiments, the prongs may include detent features such as raised bumps, protrusions, or enlarged sections that create a snap-fit engagement with corresponding recesses or indentations in the cavity walls. In some embodiments, the prongs may include tapered sections or stepped transitions that create increasing resistance during insertion, culminating in a final seating position that provides feedback confirmation of proper engagement. In some embodiments, the prongs may include flexible tabs or cantilever arms that deflect during insertion and spring back into locking position when fully seated. In some embodiments, the prongs may include surface texturing, knurling, or other friction-enhancing features that create resistance and provide tactile feedback during engagement and disengagement. In some embodiments, the mounting portion cavities may include spring-loaded elements, compressible materials, or resilient features that compress during prong insertion and provide return force to create audible or tactile feedback signals.

[0180] In some embodiments, the prongs 358 and 360 extending from the body 337 have an exterior surface, but that surface is not part of the exterior surface of the artificial nail when the mounting portion and extension portion 336 are engaged. In some embodiments, there is a step transition between the exterior surface 338 of the body 337 of the extension portion 336 and the prongs 358 and 360, such that the prongs have a height that is less than the height of the body 337 of the extension portion 336, at least at the top side 350. In some embodiments, this step configuration allows for a flush seam when the extension portion 336 is engaged with the mounting portion.

[0181] In some embodiments, the extension portion 336 may include an interstitial feature 368 positioned between the prongs 358 and 360 (e.g., outside body 337). In some embodiments, the interstitial feature 368 may help eliminate gaps at the seam when the extension portion 336 is attached to the mounting portion, thereby creating a more seamless appearance and reducing the potential for debris accumulation or hair entanglement.

[0182] FIG. 3G illustrates a bottom view of the extension portion 336 showing the body 337 and the bottom side 352, in accordance with some embodiments of the disclosure. In some embodiments, the bottom side 352 may include one or more of the same features and elements as described in connection with FIG. 3F, including the body 337, the prongs 358 and 360 extending from the body 337, cross-pattern configuration 362 of the prongs 358 and 360, feedback features 364 on the prongs 358 and 360, and interstitial feature 368. In some embodiments, the bottom view may provide visibility of the structural elements that interface with the mounting portion during engagement.

[0183] FIG. 3H illustrates a bottom perspective view of the extension portion 336 showing the body 337 and the prongs 358 and 360 extending therefrom, in accordance with some embodiments of the disclosure. In some embodiments, the bottom perspective view clearly shows the cross-shaped configuration of the prongs 358 and 360 extending from the body 337, which may not be fully visible in the top and bottom views of FIGS. 3F and 3G. In some embodiments, the cross-shaped prongs 358 and 360 extending from the body 337 may include four arms or extensions that radiate outwardly from a central axis of each prong, providing enhanced engagement stability and rotational resistance when inserted into corresponding cross-shaped cavities of the mounting portion. In some embodiments, the cross-shaped configuration of the prongs 358 and 360 may provide multiple contact points with the mounting portion, distributing engagement forces across a larger surface area and improving the overall retention characteristics of the artificial nail assembly.

[0184] FIGS. 3I-3J illustrate detailed views of the artificial nail assembly 372 in a fully engaged state, showing the mounting portion and extension portion joined together, in accordance with some embodiments of the disclosure. The artificial nail 372 (also referred to as artificial nail assembly 372 herein) may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the artificial nail assembly 372 may represent the fully engaged configuration of the mounting portion described in FIGS. 3A-3E and the extension portion described in FIGS. 3F-3H. In some embodiments and as illustrated, some or all of the internal engagement mechanisms may be concealed in the fully engaged state. In some embodiments, the fully engaged state may be representative of various mounting and extension combinations irrespective of the internal engagement mechanisms.

[0185] FIG. 3I illustrates a top view of the artificial nail assembly 372 in the fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the artificial nail assembly 372 may include a first lateral side 374, a second lateral side 376, a proximal end 378, a distal end 380, a top side 382, and a bottom side 384. In some embodiments, a horizontal axis 386 may extend across the artificial nail assembly 372. Horizontal axis 386 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 386 is not the midline reference. In some embodiments, a longitudinal axis 388 may extend along the length of the artificial nail assembly 372. Longitudinal axis 388 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 388 is not the centerline reference.

[0186] In some embodiments, the artificial nail assembly 372 may include a mounting portion 300 and an extension portion 336 that together form a unified artificial nail 372. In some embodiments, the mounting portion 300 may correspond to the area where the mounting portion is positioned when engaged with the extension portion, while the extension portion 336 may correspond to the area occupied by the extension portion. In some embodiments, a seam 394 may be positioned between the mounting portion 300 and the extension portion 336, where the two components interface with one another.

[0187] In some embodiments, the seam 394 may include a curved transition 396 that provides a smooth and seamless appearance between the mounting portion 300 and the extension portion 336. In some embodiments, the curved transition 396 may help eliminate visible seams or discontinuities that might otherwise be apparent at the junction between the two components.

[0188] In some embodiments, the exterior surface 398 of the artificial nail assembly 372 may be formed by the combination of the exterior surface of the mounting portion 300 and the exterior surface of the extension portion 336 when engaged. In some embodiments, the exterior surface 398 may provide a continuous and unified appearance across the entire length of the artificial nail assembly 372, from the proximal end 378 to the distal end 380. In some embodiments, the exterior surface 398 may include decorative features, polish, nail art, or other aesthetic enhancements applied to the extension portion 336, while the mounting portion 300 may provide a foundation surface that blends seamlessly with the decorated extension portion.

[0189] In some embodiments, the artificial nail assembly 372 may exhibit asymmetry about the horizontal axis 386, where the configuration above and below the horizontal axis 386 may differ in thickness, curvature, or other structural characteristics to replicate the natural profile of a fingernail. In some embodiments, the artificial nail assembly 372 may exhibit symmetry about the longitudinal axis 388, where the configuration on either side of the longitudinal axis 388 may be substantially mirror images of one another.

[0190] FIG. 3J illustrates a bottom view of the artificial nail assembly 372 in the fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may show the bottom side 384 of the artificial nail assembly 372, which may include the attachment surface of the mounting portion 300 that interfaces with the natural nail. In some embodiments, the bottom side 384 may include the same structural elements and reference numbers as described in connection with FIG. 3I, including the first lateral side 374, second lateral side 376, proximal end 378, distal end 380, horizontal axis 386, and longitudinal axis 388.

[0191] In some embodiments, the mounting portion 300 may be visible from the bottom view, showing the area where the mounting portion attaches to the natural nail surface. In some embodiments, the extension portion 336 may also be visible from the bottom view, though the internal engagement mechanisms such as prongs, cavities, or other connector interface features may be concealed within the assembled structure. In some embodiments, the seam 394 and curved transition 396 may be visible from the bottom view, demonstrating how the two components interface to create a unified bottom surface profile.

[0192] In some embodiments, the bottom side 384 may include surface features configured to promote adhesion or provide structural support when the artificial nail assembly 372 is attached to a natural nail. In some embodiments, the bottom side 384 may include texturing, adhesive layers, or other attachment mechanisms positioned primarily or wholly in the mounting portion 300.

[0193] In some embodiments, the artificial nail assembly 372 may be configured such that the engagement between the mounting portion and extension portion is substantially invisible when viewed from either the top view or bottom view, creating the appearance of a single, continuous artificial nail structure. In some embodiments, the curved transition 396 and seamless integration of the mounting portion 300 and extension portion 336 may provide professional-quality aesthetics while maintaining the functional benefits of interchangeable components that allow users to easily swap extension portions without removing the mounting portion from the natural nail.

[0194] In some embodiments, the prongs 358 and 360 extending from the body 337 have an exterior surface, but that surface is not part of the exterior surface of the artificial nail when the mounting portion and extension portion 336 are engaged. In some embodiments, there is a step transition between the exterior surface 338 of the body 337 of the extension portion 336 and the prongs 358 and 360, such that the prongs have a height that is less than the height of the body 337 of the extension portion 336, at least at the top side 350. In some embodiments, this step configuration allows for a flush seam when the extension portion 336 is engaged with the mounting portion.

[0195] In some embodiments, the extension portion 336 may include an interstitial feature 368 positioned between the prongs 358 and 360 (e.g., outside body 337). In some embodiments, the interstitial feature 368 may help eliminate gaps at the seam when the extension portion 336 is attached to the mounting portion, thereby creating a more seamless appearance and reducing the potential for debris accumulation or hair entanglement.

[0196] FIG. 3G illustrates a bottom view of the extension portion 336 showing the body 337 and the bottom side 352, in accordance with some embodiments of the disclosure. In some embodiments, the bottom side 352 may include one or more of the same features and elements as described in connection with FIG. 3F, including the body 337, the prongs 358 and 360 extending from the body 337, cross-pattern configuration 362 of the prongs 358 and 360, feedback features 364 on the prongs 358 and 360, and interstitial feature 368. In some embodiments, the bottom view may provide visibility of the structural elements that interface with the mounting portion during engagement.

[0197] FIG. 3H illustrates a bottom perspective view of the extension portion 336 showing the body 337 and the prongs 358 and 360 extending therefrom, in accordance with some embodiments of the disclosure. In some embodiments, the bottom perspective view clearly shows the cross-shaped configuration of the prongs 358 and 360 extending from the body 337, which may not be fully visible in the top and bottom views of FIGS. 3F and 3G. In some embodiments, the cross-shaped prongs 358 and 360 extending from the body 337 may include four arms or extensions that radiate outwardly from a central axis of each prong, providing enhanced engagement stability and rotational resistance when inserted into corresponding cross-shaped cavities of the mounting portion. In some embodiments, the cross-shaped configuration of the prongs 358 and 360 may provide multiple contact points with the mounting portion, distributing engagement forces across a larger surface area and improving the overall retention characteristics of the artificial nail assembly.

[0198] FIGS. 3I-3J illustrate detailed views of the artificial nail assembly 372 in a fully engaged state, showing the mounting portion and extension portion joined together, in accordance with some embodiments of the disclosure. The artificial nail 372 (also referred to as artificial nail assembly 372 herein) may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the artificial nail assembly 372 may represent the fully engaged configuration of the mounting portion described in FIGS. 3A-3E and the extension portion described in FIGS. 3F-3H. In some embodiments and as illustrated, some or all of the internal engagement mechanisms may be concealed in the fully engaged state. In some embodiments, the fully engaged state may be representative of various mounting and extension combinations irrespective of the internal engagement mechanisms.

[0199] FIG. 3I illustrates a top view of the artificial nail assembly 372 in the fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the artificial nail assembly 372 may include a first lateral side 374, a second lateral side 376, a proximal end 378, a distal end 380, a top side 382, and a bottom side 384. In some embodiments, a horizontal axis 386 may extend across the artificial nail assembly 372. Horizontal axis 386 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 386 is not the midline reference. In some embodiments, a longitudinal axis 388 may extend along the length of the artificial nail assembly 372. Longitudinal axis 388 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 388 is not the centerline reference.

[0200] In some embodiments, the artificial nail assembly 372 may include a mounting portion 300 and an extension portion 336 that together form a unified artificial nail 372. In some embodiments, the mounting portion 300 may correspond to the area where the mounting portion is positioned when engaged with the extension portion, while the extension portion 336 may correspond to the area occupied by the extension portion. In some embodiments, a seam 394 may be positioned between the mounting portion 300 and the extension portion 336, where the two components interface with one another.

[0201] In some embodiments, the seam 394 may include a curved transition 396 that provides a smooth and seamless appearance between the mounting portion 300 and the extension portion 336. In some embodiments, the curved transition 396 may help eliminate visible seams or discontinuities that might otherwise be apparent at the junction between the two components.

[0202] In some embodiments, the exterior surface 398 of the artificial nail assembly 372 may be formed by the combination of the exterior surface of the mounting portion 300 and the exterior surface of the extension portion 336 when engaged. In some embodiments, the exterior surface 398 may provide a continuous and unified appearance across the entire length of the artificial nail assembly 372, from the proximal end 378 to the distal end 380. In some embodiments, the exterior surface 398 may include decorative features, polish, nail art, or other aesthetic enhancements applied to the extension portion 336, while the mounting portion 300 may provide a foundation surface that blends seamlessly with the decorated extension portion.

[0203] In some embodiments, the artificial nail assembly 372 may exhibit asymmetry about the horizontal axis 386, where the configuration above and below the horizontal axis 386 may differ in thickness, curvature, or other structural characteristics to replicate the natural profile of a fingernail. In some embodiments, the artificial nail assembly 372 may exhibit symmetry about the longitudinal axis 388, where the configuration on either side of the longitudinal axis 388 may be substantially mirror images of one another. In some embodiments, the extension portion may produce multiple audible and/or tactile feedback signals during the engagement process, such as intermediate clicks as the projection features progress through the cavity, culminating in a final click when reaching the fully engaged state.

[0204] FIG. 3J illustrates a bottom view of the artificial nail assembly 372 in the fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may show the bottom side 384 of the artificial nail assembly 372, which may include the attachment surface of the mounting portion 300 that interfaces with the natural nail. In some embodiments, the bottom side 384 may include the same structural elements and reference numbers as described in connection with FIG. 3I, including the first lateral side 374, second lateral side 376, proximal end 378, distal end 380, horizontal axis 386, and longitudinal axis 388.

[0205] In some embodiments, the mounting portion 300 may be visible from the bottom view, showing the area where the mounting portion attaches to the natural nail surface. In some embodiments, the extension portion 336 may also be visible from the bottom view, though the internal engagement mechanisms such as prongs, cavities, or other connector interface features may be concealed within the assembled structure. In some embodiments, the seam 394 and curved transition 396 may be visible from the bottom view, demonstrating how the two components interface to create a unified bottom surface profile.

[0206] In some embodiments, the bottom side 384 may include surface features configured to promote adhesion or provide structural support when the artificial nail assembly 372 is attached to a natural nail. In some embodiments, the bottom side 384 may include texturing, adhesive layers, or other attachment mechanisms positioned primarily or wholly in the mounting portion 300.

[0207] In some embodiments, the artificial nail assembly 372 may be configured such that the engagement between the mounting portion and extension portion is substantially invisible when viewed from either the top view or bottom view, creating the appearance of a single, continuous artificial nail structure. In some embodiments, the curved transition 396 and seamless integration of the mounting portion 300 and extension portion 336 may provide professional-quality aesthetics while maintaining the functional benefits of interchangeable components that allow users to easily swap extension portions without removing the mounting portion from the natural nail.

[0208] FIGS. 4A-4U illustrate alternative configurations of the mounting portion and extension portion components, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIGS. 4A-4U unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described. The description here shows some of the alternative or additional features that may be implemented in various embodiments.

[0209] In some embodiments, the features described in the various figures described herein may be mixed and matched in different combinations. For example, a single prong configuration may include feedback features and/or one or more lateral projections and/or a cross-pattern configuration in some embodiments. In another example, any of the alternative configurations may include an adhesive layer and/or texturing on the attachment surface. The modular nature of the artificial nail system may allow for various combinations of mounting portion and extension portion features to achieve desired engagement characteristics, aesthetic appearance, and functional performance.

[0210] FIG. 4A illustrates a top view of an extension portion 400 showing alternative prong and lateral projection configurations, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 400 may include the same view and features as described in connection with FIG. 3F, with additional lateral projections 402 positioned on one or more of lateral side 404 and 406 of prongs 408 and 410, respectively. In some embodiments, feedback features 412 may include a single spherical feature positioned on the proximal end of each of the prongs 408 and 410. In some embodiments, the lateral projections 402 may provide enhanced sealing when the extension portion 400 is engaged with a corresponding mounting portion.

[0211] FIG. 4B illustrates a bottom view of the extension portion 400 showing the lateral projections 402, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may include the same features as described in connection with FIG. 3G, with the addition of the lateral projections 402 extending laterally from the prongs 408 and 410.

[0212] FIG. 4C illustrates a perspective view of a mounting portion 414 configured to receive the extension portion 400 with lateral projections, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 414 may include the same features as described in connection with FIG. 3B, with additional recess openings 416 configured to accommodate each lateral projection 402 of the extension portion 400.

[0213] FIG. 4D illustrates a front view of the mounting portion 414 showing the lateral projection openings 416, in accordance with some embodiments of the disclosure. In some embodiments, the front view may provide a clear view of the openings 416 for each lateral projection, positioned adjacent to the main cavities for the prongs 408 and 410.

[0214] FIG. 4E illustrates a perspective view of a mounting portion 418 configured for a single prong engagement, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 418 may include the same features as described in connection with FIG. 3B, with a recess feature 420 configured for a single prong. In some embodiments, there may be no pillar structure and no recesses for lateral projections in this configuration.

[0215] In other embodiments, the single prong may include lateral projections and the corresponding mounting portion may include reciprocal features configured to accommodate such lateral projections. In some embodiments, the mounting portion may include additional recess openings positioned adjacent to the main cavity to receive the lateral projections extending from the prongs. In some embodiments, the lateral projections on the prong may extend outwardly from the sides of the prong.

[0216] FIG. 4F illustrates a top view of an extension portion 422 with a single prong configuration, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 422 may include the same features as described in connection with FIG. 3F, with a single prong 424 positioned at the center. In some embodiments, there may be no interstitial features in this configuration. In some embodiments, the prong 424 may have a smooth surface without cross-pattern features. In alternative embodiments, cross-pattern features or other pattern features could be added. In some embodiments, there may be no feedback features. In alternative embodiments, feedback features could be added.

[0217] FIG. 4G illustrates a perspective view of a mounting portion 426 with a straight distal end configuration, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 426 may include the same features as described in connection with FIG. 3B, with a distal end 428 that forms a straight line. In some embodiments, the distal end 428 may still curve along the top surface 430 and bottom surface 432, but the cross-section may be planar.

[0218] In some embodiments, the mounting portion 426 may be configured to accommodate prongs having various cross-sectional profiles, including circular, oval, rectangular, or other geometric configurations. In some embodiments, the cavity structures may be dimensioned to receive prongs with smooth surfaces rather than cross-shaped or patterned configurations. In some embodiments, the recess feature may be sized and shaped to provide a secure friction fit with corresponding prongs regardless of their specific cross-sectional geometry.

[0219] FIG. 4H illustrates a front view of the mounting portion 426 showing smooth cavity configurations, in accordance with some embodiments of the disclosure. In some embodiments, since the prongs may be smooth and may not have cross-pattern features, the cavities 434 and 436 may reflect this smooth configuration. In some embodiments, a pillar 438 may be positioned between the cavities 434 and 436 and may not be recessed. In some embodiments, the pillar 438 may be recessed. In some embodiments, the pillar 438 extends between the top surface 430 and the bottom surface 432 of the mounting portion 426. In some embodiments, the pillar 438 connects the top surface 430 and the bottom surface 432 of the mounting portion 426. In some embodiments, the pillar 438 extends between the top surface 430 and the bottom surface 432 but does not connect to at least one of the top surface 430 or the bottom surface 432. In some embodiments, an inner side 440 of each cavity may be higher (e.g., greater in height) than an outer side 442 of the cavity. In some embodiments, the cavity may taper between the inner side 440 and outer side 442. In some embodiments, both the top side and bottom side of the cavities may curve, following the horizontal curvature of the top surface 430 and bottom surface 432, respectively.

[0220] FIG. 4I illustrates a top view of an extension portion 444 with a straight transition feature, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 444 may include the same features as described in connection with FIG. 3F, with a transition feature 446 that is straight rather than curved. In some embodiments, two prongs 448 and 450 may not taper from distal end 452 to proximal end 454. In other embodiments, one or more of prongs 448 and 450 may taper from distal end 452 to proximal end 454. In some embodiments, there may be no cross-pattern features or feedback features. In other embodiments, one or more of the cross-pattern features or feedback features can be implemented.

[0221] In some embodiments, the extension portion 444 may include lateral protrusions extending outwardly from the sides of the prongs 448 and 450 to provide enhanced sealing when engaged with a corresponding mounting portion. In other embodiments, as illustrated, the extension portion 444 may be configured without lateral protrusions.

[0222] FIG. 4J illustrates a top view of an artificial nail assembly 452 with straight transition features, in accordance with some embodiments of the disclosure. In some embodiments, the artificial nail assembly 452 may include the same features as described in connection with FIG. 3I, incorporating the mounting portion features from FIGS. 4G and 4H. In some embodiments, rather than a curved transition, there may be a straight transition 454 between the mounting portion and extension portion.

[0223] FIG. 4K illustrates a bottom view of the artificial nail assembly 452, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may include the same features as described in connection with FIG. 3J, but for the features of the artificial nail assembly 452 shown in FIG. 4J.

[0224] FIG. 4L illustrates a perspective view of a mounting portion 456 configured for two prongs with interstitial features, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 456 may include the same features as described in connection with FIG. 3B. In some embodiments, the base may be configured for a two-prong extension with an interstitial feature, and from this view may appear identical to the mounting portion shown in FIG. 4E.

[0225] FIG. 4M illustrates a front view of the mounting portion 456 showing cavity configurations for non-tapered prongs, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 456 may include the same features as described in connection with FIG. 3D. In some embodiments, since the prongs may not taper from distal to proximal end and may not have cross-pattern or feedback features, the recess portion may reflect this configuration. In some embodiments, a pillar 458 may be positioned to accommodate an interstitial feature of the extension portion. In some embodiments, pillar 458 is recessed in the recess feature of mounting portion 456. In some embodiments, the pillar 458 extends between the top side and the bottom side of the mounting portion 456. In some embodiments, the pillar 458 connects the top side and the bottom side of the mounting portion 456. In some embodiments, the pillar 458 extends between the top side and the bottom side but does not connect to at least one of the top side or the bottom side.

[0226] FIG. 4N illustrates a top view of an extension portion 460 with extended interstitial features, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 460 may include the same features as described in connection with FIG. 3F, without cross-pattern or feedback features. In some embodiments, an interstitial feature 462 may extend further toward the proximal end compared to other configurations with an interstitial feature. In some embodiments, this configuration may integrate one or more feedback features and/or one or more lateral projections in alternative embodiments.

[0227] In some embodiments, when the mounting portion 456 and extension portion 460 are fully engaged, the resulting artificial nail assembly may appear similar to the configurations shown in FIGS. 3I and 3J. In some embodiments, the description provided in connection with FIGS. 3I and 3J may equally apply to the fully engaged artificial nail assembly formed by mounting portion 456 and extension portion 460, including the unified exterior surface and seamless appearance.

[0228] FIG. 4O illustrates a perspective view of a mounting portion 464 configured for three prongs, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 464 may include the same features as described in connection with FIG. 3B, with a recess having three cavities 466, 468, and 470 for a three-prong extension. In some embodiments, two pillars 472 and 474 may separate the cavities. In some embodiments, the pillars 472 and 474 may not be recessed, as illustrated. In other embodiments, one or more of the pillars 472 and 474 may be recessed. In some embodiments, the pillars 472 and 474 extend between the top side and the bottom side of the mounting portion 464. In some embodiments, the pillars 472 and 474 connect the top side and the bottom side of the mounting portion 464. In some embodiments, the pillars 472 and 474 extend between the top side and the bottom side but do not connect to at least one of the top side or the bottom side. In some embodiments, there may be a center cavity 468 and lateral cavities 466 and 470 on both sides of the center cavity 468.

[0229] In some embodiments, there may be no corresponding recess features for cross-pattern or feedback features, as the prongs may be smooth and the cavities may reflect the reciprocal features. In other embodiments, the recess features may include one or more corresponding features such as cross-shaped cavities, indentations, or grooves configured to receive prongs having reciprocal cross-pattern or feedback features. The recess features may be dimensioned and shaped to provide complementary engagement with the specific geometry of the prongs.

[0230] FIG. 4P illustrates a front view of the mounting portion 464 showing the three-cavity configuration, in accordance with some embodiments of the disclosure. In some embodiments, the front view may clearly show the openings of the cavities 466, 468, and 470 and the pillars 472 and 474. In some embodiments, the lateral cavities 466 and 470 may be mirror images and may taper from inner side to outer side. In some embodiments, the center cavity 468 may be symmetrical about the centerline.

[0231] FIG. 4Q illustrates a top rear perspective view of an extension portion 476 with three prongs, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 476 may include the same features as described in connection with FIG. 3F, showing three prongs 478, 480, and 482. In some embodiments, there may be no cross-pattern features, no feedback features, and no interstitial features. In some embodiments, alternative embodiments could include one or more interstitial features, and the pillars of the corresponding mounting portion would be recessed to accommodate such features.

[0232] In some embodiments, the extension portion 476 may include cross-pattern features on one or more of the prongs 478, 480, and 482. In some embodiments, the extension portion 476 may include feedback features such as spherical protrusions, detent bumps, or ridges positioned on one or more of the prongs 478, 480, and 482 to provide tactile and/or audible confirmation when the extension portion reaches full engagement with the mounting portion 464. In some embodiments, the extension portion 476 may include both cross-pattern features and feedback features on one or more of the prongs 478, 480, and 482 to provide both enhanced stability and engagement confirmation. In some embodiments, when the mounting portion 464 and extension portion 476 are fully engaged, the resulting artificial nail assembly may appear similar to the configurations shown in FIGS. 3I and 3J, with a unified exterior surface that conceals the internal engagement mechanisms and provides a seamless appearance from proximal end to distal end. In some embodiments, the fully engaged artificial nail assembly formed by mounting portion 464 and extension portion 476 may exhibit the same continuous and professional-quality appearance described in connection with FIGS. 3I and 3J, where the seam between components is substantially invisible and the exterior surface provides a smooth transition across the entire length of the artificial nail. In other embodiments, the three-prong version may include a straight transition between the mounting portion 464 and extension portion 476, similar to the configurations described in connection with FIGS. 4J and 4K, where the mounting portion 464 and extension portion 476 can be modified accordingly to accommodate the straight transition configuration.

[0233] FIG. 4R illustrates a perspective view of a mounting portion 484 with threaded engagement features, showing the bottom surface 485, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 484 may include features similar to other mounting portions, with a distal end 486 that is straight. In some embodiments, the mounting portion 484 may have an exterior surface curve 487 and a bottom surface curve 490. In some embodiments, the mounting portion 484 may be symmetric about a longitudinal axis except for an alignment feature 492. In some embodiments, the mounting portion 484 may be asymmetric about the horizontal axis. In some embodiments, a cavity 494 may be threaded to receive a protrusion with corresponding threads from an extension portion. In some embodiments, this connector interface may provide a threaded coupling mechanism. In some embodiments, there may be an alignment feature 492 in the base, which may include an indentation on the distal end 486 that extends from the bottom side 485 of the base into the body. In some embodiments, the alignment feature 492 may not extend to the exterior surface and may be located at the distal end 486, extending slightly toward the proximal end. In some embodiments, the cavity 494 may be positioned in the centerline. In other embodiments, the cavity 494 could be located elsewhere on the distal end 486.

[0234] FIG. 4S illustrates a perspective view of an extension portion 498 configured for threaded engagement, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 498 may include a threaded protrusion 496 and an alignment feature 497, such as an alignment protrusion configured to engage with the reciprocal alignment feature 492 of the mounting portion 484. In some embodiments, the alignment feature 497 may be located in a similar position to the alignment feature 492 of the mounting portion 484. In some embodiments, when the reciprocal alignment features engage, the extension portion 498 may stop rotating and the curves of the exterior surface may be aligned along the horizontal axis.

[0235] In some embodiments, the alignment features may include various configurations such as a protrusion and recess arrangement or other complementary features. In some embodiments, the alignment protrusion may be located on the mounting portion while the corresponding alignment recess may be positioned on the extension portion. In some embodiments, the alignment features may include ridges and grooves, tabs and slots, or other interlocking elements that provide rotational positioning and prevent misalignment during engagement. In some embodiments, the alignment features may be configured to ensure proper orientation of the mounting portion and extension portion relative to one another, thereby maintaining consistent aesthetic appearance and structural integrity when the components are fully engaged.

[0236] FIGS. 4T and 4U illustrate a mounting portion 488 and extension portion 489 with reversed connector configurations, respectively, in accordance with some embodiments of the disclosure. In some embodiments, FIG. 4T shows a top distal end view of the mounting portion 488, and FIG. 4U shows a top proximal end view of the extension portion 489. In some embodiments, FIGS. 4T and 4U may show an example where the prongs and cavities are reversed, such that prongs 490 are positioned on the mounting portion 488 and a cavity 491 is positioned on the extension portion 489. In some embodiments, the prong and cavity features may be the same as described in connection with FIGS. 4G, 4H, and 4I but in reversed configuration. In some embodiments, a transition feature 492 may be straight. In other embodiments, the transition feature can be curved.

[0237] In some embodiments, this reversed configuration could be applied to any embodiment described herein. In some cases, some features could be reversed while others are not. For example, in a hybrid configuration, the mounting portion may include both projection features extending outwardly and recess features extending inwardly, while the extension portion may similarly include both recess features and projection features to engage with the corresponding features of the mounting portion. In some embodiments, a mounting portion may include a primary projection feature extending outwardly along the longitudinal axis and secondary recess features positioned laterally to receive corresponding projection features from the extension portion.

[0238] In some embodiments, the reversal of connector interface configurations may be applied selectively to different aspects of the connector interfaces. For instance, the primary engagement mechanism (such as prongs and cavities) may maintain the standard configuration where the mounting portion includes recess features and the extension portion includes projection features, while secondary engagement features (such as one or more of lateral projections or feedback features) may be reversed such that the mounting portion includes outwardly extending elements and the extension portion includes corresponding receiving features.

[0239] In some embodiments, the reversed configuration may be applied to specific structural elements while maintaining the overall engagement architecture. For example, the pillar structure described in various embodiments may be positioned on the extension portion rather than the mounting portion, providing lateral stability and alignment from the opposite component. Similarly, feedback features such as detent mechanisms, spherical protrusions, or audible click elements may be positioned on either the mounting portion or the extension portion depending on the specific reversed configuration being implemented.

[0240] FIG. 5 illustrates various alternative configurations of mounting portions and extension portions, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIG. 5 unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described. The description here shows some of the alternative or additional features that may be implemented in various embodiments.

[0241] In some embodiments, the features described in the various figures described herein may be mixed and matched in different combinations. In some embodiments, the projection types described can be combined with other projection types. In some embodiments, the projection types can be reversed such that they extend from the mounting portion (or extension portion). In some embodiments, the projection types can be combined with other features such as lateral projections. In some embodiments, the projection types can be combined with feedback features. In some embodiments, the projection types can be combined with interstitial features. In some embodiments, the projection types can be combined with transition features. In some embodiments, the mounting portions can be combined with adhesive layers. The modular nature of the artificial nail system may allow for various combinations of mounting portion and extension portion features to achieve desired engagement characteristics, aesthetic appearance, and functional performance.

[0242] Diagram A of FIG. 5 illustrates a top view of artificial nail A having mounting portion A1 and extension portion A2, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion A1 and extension portion A2 may include hook-shaped transition features. In some embodiments, the exterior surface of the mounting portion A1 and the exterior surface of the extension portion A2 together form the exterior surface of the artificial nail A. In some embodiments, the mounting portion A1 and extension portion A2 may engage from the side along the horizontal axis. In some embodiments, one of the mounting portion A1 or extension portion A2 may include rails while the other includes corresponding grooves so the extension portion slides in and is secured.

[0243] Diagram B of FIG. 5 illustrates a top view of artificial nail B having mounting portion B1 and extension portion B2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail B may include a threaded engagement configuration as described in connection with FIGS. 4R and 4S. In some embodiments, the mounting portion B1 may include a threaded cavity configured to receive a threaded protrusion from the extension portion B2. In some embodiments, the threaded coupling mechanism may provide secure engagement through rotational motion. In some embodiments, alignment features may be included to ensure proper orientation during engagement.

[0244] Diagram C of FIG. 5 illustrates a top view of artificial nail C having mounting portion C1 and extension portion C2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail C may include the same threaded engagement configuration as artificial nail B, but with the projection and recess features reversed. In some embodiments, the mounting portion C1 may include a threaded projection while the extension portion C2 includes a corresponding threaded recess. In some embodiments, this configuration represents an example of a reversed configuration. In some embodiments, both artificial nail B and artificial nail C may include alignment features in alternative embodiments.

[0245] Diagram D of FIG. 5 illustrates a profile view of artificial nail D having mounting portion D1 and extension portion D2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail D may include a snap-fit engagement mechanism. In some embodiments, the projection features may be positioned on the extension portion D2 while the recess features are positioned on the mounting portion D1. In some embodiments, the engagement motion may occur from top to bottom. In some embodiments, the extension portion D2 may include a flange or overhang with a projection that connects into a mounting portion ledge having a recess feature. In some embodiments, the recess feature may be recessed within the ledge of the mounting portion. In some embodiments, the ledge of the mounting portion may be concealed when the components are fully engaged. In some embodiments, the projection features may be concealed when engaged. In some embodiments, the exterior surface of the extension portion D2, including the exterior surface of the overhang, along with the exterior surface of the mounting portion D1 may form the exterior surface of the artificial nail D.

[0246] Diagram E of FIG. 5 illustrates a profile view of artificial nail E having mounting portion E1 and extension portion E2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail E may include the same snap-fit configuration as artificial nail D, except the projection feature may be positioned on the mounting portion E1. In some embodiments, the recess feature may be positioned at the bottom side of the overhang of the extension portion E2. In some embodiments, the recess feature may be recessed within the overhang of the extension portion E2. In some embodiments, this configuration represents a reversed position relative to artificial nail D.

[0247] Diagram F of FIG. 5 illustrates a top view of artificial nail F having mounting portion F1 and extension portion F2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail F may include lateral engagement along the horizontal axis. In some embodiments, the engagement may occur diagonally with respect to the horizontal axis. In some embodiments, the transition feature may also be diagonal. In some embodiments, the mounting portion F1 may include an overhang that is undercut. In some embodiments, the bottom side of the overhang may include connector interface features such as rails and/or grooves. In some embodiments, the extension portion F2 may include a reciprocal feature where the top portion is removed and there is a shelf having the connector interface with reciprocal features. In some embodiments, the extension portion F2 may slide onto the mounting portion F1 at an angle.

[0248] Diagram G of FIG. 5 illustrates a top view of artificial nail G having mounting portion G1 and extension portion G2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail G may include the same configuration as artificial nail F, but with the overhang positioned on the extension portion G2 and the shelf positioned on the mounting portion G1.

[0249] Diagram H of FIG. 5 illustrates a top view of artificial nail H having mounting portion H1 and extension portion H2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail H may include a single prong configuration similar to the configurations described in connection with FIGS. 4E and 4F. In some embodiments, the transition feature may be straight rather than curved.

[0250] Diagram I of FIG. 5 illustrates a top view of artificial nail I having mounting portion I1 and extension portion I2, in accordance with some embodiments of the disclosure. In some embodiments, artificial nail I may include the same configuration as artificial nail H, but with the projection and recess features reversed. In some embodiments, the prong may be positioned on the mounting portion I1 while the recess is positioned on the extension portion I2. In some embodiments, this configuration may include one or more prongs.

[0251] Diagrams J, K, and L of FIG. 5 illustrate top views of artificial nails J, K, and L having mounting portions J1, K1, and L1 and extension portions J2, K2, and L2, respectively, in accordance with some embodiments of the disclosure. In some embodiments, artificial nails J, K, and L may include single prong configurations. In some embodiments, alternative embodiments may include any other projection or reciprocal recess configuration described herein. In some embodiments, artificial nails J, K, and L may show different transition feature shapes. In some embodiments, artificial nail J may include a diagonal transition feature. In some embodiments, artificial nail K may include a curved transition feature. In some embodiments, artificial nail L may include a straight transition feature.

[0252] Diagrams M-X of FIG. 5 illustrate extension portions with different projection features, in accordance with some embodiments of the disclosure. In some embodiments, extension portion M may include a single prong with a square proximal end. In some embodiments, extension portion N may include a double prong configuration. In some embodiments, extension portion O may include a double prong with an interstitial feature between the prongs. In some embodiments, extension portion P may include a triple prong implementation. In some embodiments, extension portion Q may include a single prong with a curved proximal end. In some embodiments, extension portion R may include a single prong with two curves forming a valley-shaped proximal end. In some embodiments, extension portion S may include two triangle-shaped prongs. In some embodiments, extension portion T may include three triangle-shaped prongs. In some embodiments, extension portion U may include a single prong with curved features on the lateral sides that terminate at a tip. In some embodiments, extension portion V may include a single threaded prong similar to extension portion B2. In some embodiments, extension portion W may include two projection features similar to extension portion D2. In some embodiments, extension portion X may include a single prong in a triangle shape.

[0253] In some embodiments, features of the projections described herein can be mixed and matched in any combination. In some embodiments, the projections described herein can include other features described herein such as interstitial features between two or more projections. In some embodiments, the projections can include lateral projections. In some embodiments, the mounting portion(s) and/or extension portion(s) can have any transition shape described herein. In some embodiments, the projections can be reversed so the mounting portion has the projections. In some embodiments, the projections can be paired with mounting portions having reciprocal recesses for complementary engagement.

[0254] FIGS. 6A and 6B illustrate top and bottom views of a set of artificial nails, respectively, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIGS. 6A and 6B unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described. In some embodiments, the description of FIGS. 4A-4D may apply to the configurations shown in FIGS. 6A and 6B.

[0255] FIG. 6A illustrates a top view of a set of artificial nails showing mounting portions 600A, 600B, 600C, 600D, and 600E, generally referred to as mounting portions 600, and extension portions 602A, 602B, 602C, 602D, and 602E, generally referred to as extension portions 602, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portions 600 may be the same as the mounting portion described in connection with FIGS. 4C and 4D. In some embodiments, the extension portions 602 may be similar to the extension portions described in connection with FIGS. 4A and 4B but with different nail body shapes. The extension portions 602 are illustrated with almond-shaped nail bodies rather than the shapes shown in previous figures. In other embodiments, other shaped nail bodies are possible.

[0256] The mounting portions 600 and extension portions 602 are shown in an exploded or disconnected state. Each corresponding extension portion is illustrated as positioned above its corresponding mounting portion, where mounting portion 600A corresponds to extension portion 602A, mounting portion 600B corresponds to extension portion 602B, mounting portion 600C corresponds to extension portion 602C, mounting portion 600D corresponds to extension portion 602D, and mounting portion 600E corresponds to extension portion 602E.

[0257] In some embodiments, the set may include multiple mounting portions such as five mounting portions 600 and/or multiple extension portions, such as five extension portions 602 that are configured in size (e.g., mapped) to the fingers of a hand. In some embodiments, the mounting portions 600 may be different sizes and may be sized for the different sized nails of the different fingers. In some embodiments, mounting portion 600A may be sized for a pinky finger nail, mounting portion 600B may be sized for a ring finger nail, mounting portion 600C may be sized for a middle finger nail, mounting portion 600D may be sized for an index finger nail, and mounting portion 600E may be sized for a thumb nail. In some embodiments, the extension portions 602 may also be sized correspondingly to match their respective mounting portions 600.

[0258] FIG. 6B illustrates a bottom view of the set of artificial nails depicted in FIG. 6A, wherein the components are arranged in corresponding order and orientation with the bottom surfaces visible, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may show the attachment surfaces of the mounting portions 600 that interface with natural nails. In some embodiments, the bottom view may also show the bottom surfaces of the extension portions 602.

[0259] In some embodiments, a kit may include at least two sets of the artificial nail assemblies shown in FIGS. 6A and 6B, with one set for each hand. In some embodiments, the kit may include different shaped extension portions that are all compatible with the same mounting portions 600. In some embodiments, the kit may include extension portions with oval shapes. In some embodiments, the kit may include extension portions with rectangular shapes. In some embodiments, the kit may include extension portions with coffin shapes. In some embodiments, the kit may include extension portions with stiletto shapes. In some embodiments, the kit may include extension portions with square shapes.

[0260] In some embodiments, the kit may include mounting portions 600 of different sizes corresponding to various natural nail geometries beyond the standard finger sizes. In some embodiments, the kit may include extra-small mounting portions for particularly small natural nails. In some embodiments, the kit may include extra-large mounting portions for particularly large natural nails. In some embodiments, the kit may include mounting portions with different curvatures to accommodate varying natural nail shapes.

[0261] In some embodiments, the kit may include extension portions 602 with different lengths. In some embodiments, the kit may include short extension portions for a natural appearance. In some embodiments, the kit may include medium-length extension portions for moderate enhancement. In some embodiments, the kit may include long extension portions for dramatic length. In some embodiments, the kit may include extra-long extension portions for specialty applications.

[0262] In some embodiments, the kit may include extension portions 602 with different colors. In some embodiments, the kit may include clear or natural-colored extension portions. In some embodiments, the kit may include colored extension portions in various shades such as red, pink, blue, purple, green, black, or white. In some embodiments, the extension portions may be formed with colored materials during manufacturing to achieve the desired color appearance. In some embodiments, the extension portions may include pre-applied polish coatings in various colors and finishes. In some embodiments, the pre-applied polish may include traditional nail polish formulations, gel polish formulations, or other coating materials that provide color and protection to the extension portion surface.

[0263] In some embodiments, the kit may include extension portions 602 with different decorative features. In some embodiments, the kit may include extension portions with pre-applied nail art designs that are attached to or formed on the nail body from the same material as the extension portion. In some embodiments, the kit may include extension portions with textured surfaces. In some embodiments, the kit may include extension portions with embedded decorative elements such as rhinestones, pearls, or other ornamental features.

[0264] In some embodiments, the exterior surface of the mounting portions 600 may have no coating, providing a natural or clear appearance. In some embodiments, the exterior surface of the mounting portions 600 may have a coating such as a protective coating, decorative coating, or polish coating. In some embodiments, the exterior surface of the extension portions 602 may have no coating, providing a natural or clear appearance. In some embodiments, the exterior surface of the extension portions 602 may have a coating such as a protective coating, decorative coating, or polish coating.

[0265] In some embodiments, the kit may include adhesive compositions for attaching the mounting portions 600 to natural nails. In some embodiments, the kit can include an adhesive layer, such as pre-applied adhesive layers attached on the bottom of the mounting portions 600 or unattached. In some embodiments, the kit can include an adhesive, such as liquid or gel adhesives for application-time use.

[0266] In some embodiments, the kit may include a light source such as a UV light or LED light for curing light-curable materials. In some embodiments, the kit may include a primer for preparing the natural nail surface before application of the mounting portions 600. In some embodiments, the kit may include a base coat for application to the mounting portions 600 or extension portions 602. In some embodiments, the kit may include polish for application to the mounting portions 600 or extension portions 602.

[0267] In some embodiments, the kit may include mounting portions 600 with pre-applied adhesive layers (also referred to as pre-adhesive layers herein) that are applied during manufacturing. In some embodiments, these pre-adhesive layers may include pressure-sensitive adhesives such as acrylic-based PSAs, rubber-based PSAs, or silicone-based PSAs that activate upon contact and pressure application. In some embodiments, the pre-adhesive layers may include light-curable materials such as UV-curable resins, UV-curable or LED-curable gels, or photopolymer compositions that harden when exposed to specific wavelengths of light. In some embodiments, the pre-adhesive layers may include heat-activatable adhesives that become tacky when warmed by body temperature or external heat sources. In some embodiments, the pre-adhesive layers may include resin pre-adhesives such as acrylate or methacrylate resins, epoxy resins, polyurethane resins, or urethane-acrylate resins. In some embodiments, the pre-adhesive layers may include semi-cured material including partially cured polymeric layers or gel materials that are tacky at the time of application and configured to be further cured after placement on the natural nail.

[0268] In some embodiments, the mounting portions 600 with pre-applied adhesive layers may include removable covers positioned over the adhesive surface to protect the pre-adhesive layer from contamination, debris, or premature activation prior to application to the natural nail. In some embodiments, the removable covers may include release liners, protective films, or backing materials that can be peeled away to expose the adhesive surface when the user is ready to apply the mounting portion 600.

[0269] In some embodiments, the kit may include liquid or gel adhesive compositions that are applied at the time of use rather than being pre-applied during manufacturing. In some embodiments, these application-time adhesives may include nail glue compositions such as cyanoacrylate-based adhesives, ethyl cyanoacrylate formulations, or butyl cyanoacrylate formulations. In some embodiments, the liquid or gel adhesives may include light-curable liquid resins such as UV-curable or LED-curable formulations that are applied as liquids and then cured after positioning the mounting portion on the natural nail.

[0270] In some embodiments, the liquid or gel adhesive compositions may be provided in containers configured for easy application. In some embodiments, the containers may include an applicator for controlled dispensing of the adhesive. In some embodiments, the containers may include built-in applicators such as brush applicators attached to the container cap, precision needle tips for fine application, or squeeze tubes with tapered openings.

[0271] In some embodiments, the kit may include application tools. In some embodiments, the kit may include one or more nail files for preparing natural nails. In some embodiments, the kit may include cuticle pushers for nail preparation. In some embodiments, the kit may include alcohol wipes for cleaning nail surfaces. In some embodiments, the kit may include applicator tools for positioning mounting portions 600 and extension portions 602.

[0272] In some embodiments, the kit may include removal tools and solutions. In some embodiments, the kit may include acetone or other solvents for dissolving adhesives. In some embodiments, the kit may include removal tools for safely detaching components. In some embodiments, the kit may include moisturizing treatments for post-removal nail care.

[0273] In some embodiments, the kit may include storage containers. In some embodiments, the kit may include individual compartments for organizing different sizes of mounting portions 600. In some embodiments, the kit may include separate storage areas for different styles or colors of extension portions 602. In some embodiments, the kit may include protective cases to prevent damage to components during storage or transport.

[0274] In some embodiments, the kit may include instructional materials. In some embodiments, the kit may include written instructions for applying mounting portions 600 to natural nails. In some embodiments, the kit may include step-by-step guides for attaching extension portions 602 to mounting portions 600. In some embodiments, the kit may include care and maintenance instructions for extending the life of the artificial nail assemblies. In some embodiments, the kit may include troubleshooting guides for addressing common application issues.

[0275] FIGS. 7A-7D illustrate the artificial nail assembly in various engagement states for the multi nail embodiment, showing the mounting portion attached to a natural nail and the progressive engagement of the extension portion from a disconnected state through an intermediate state to a final engaged state, in accordance with some embodiments of the disclosure. In some embodiments, such as those illustrated in FIGS. 7A-7D, the engagement motion occurs along the longitudinal axis of the artificial nail assembly (also referred to as artificial nail herein), with the extension portion being positioned over the mounting portion and sliding along the projection features until reaching the final engaged state.

[0276] FIG. 7A illustrates the mounting portion 700 attached to a natural nail 100 in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 700 may include a base 702 having a first surface configured to attach to the natural nail 100 and a second surface forming part of an exterior surface of the artificial nail. In some embodiments, the first surface is disposed opposite the second surface. In some embodiments, the mounting portion 700 may include a first end 712 (e.g., proximal end) and a second end 714 (e.g., distal end), where the first end 712 may be configured to mount adjacent to a cuticle region of the natural nail 100. In some embodiments, one or more projection features 716 may extend outwardly from the second surface of the base 702, defining a first connector interface 704A. In some embodiments, the exterior surface of the base 702 may be provided without polish or decorative features. In some embodiments, features such as polish and/or decorative features may be applied by the user at application or pre-applied at manufacture. The mounting portion 700 may be securely adhered to the natural nail 100 while remaining ready to receive an extension portion.

[0277] FIG. 7B illustrates the mounting portion 700 and extension portion 706 in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 706 may include a nail body 708 and a second connector interface 704B configured to engage with the first connector interface 704A of the mounting portion 700. In some embodiments, the second connector interface 704B may be disposed on a bottom surface of the extension portion 706. In some embodiments, the second connector interface 704B may include one or more recess features 718 that extend inwardly into the extension portion 706. In some embodiments, the recess features 718 may include grooves or channels configured to receive the projection features 716 of the mounting portion 700. In some embodiments, the nail body 708 may feature polish and decorative art 724 on its exterior surface, providing aesthetic enhancement to the artificial nail assembly. The mounting portion 700 may remain attached to the natural nail 100 while the extension portion 706 is positioned for engagement.

[0278] FIG. 7C illustrates the artificial nail assembly in an intermediate state where the extension portion 706 is partially positioned over the mounting portion 700, in accordance with some embodiments of the disclosure. The one or more projection features 716 of the mounting portion 700 may be partially inserted into the recess features 718 of the extension portion 706, but the components may not yet be fully engaged. In some embodiments, a gap 726 may be visible between the exterior surface of the base 702 and the exterior surface of the nail body 708, indicating that the extension portion 706 has not reached its final engaged position. In some embodiments, this intermediate state may allow for alignment and positioning of the extension portion 706 relative to the mounting portion 700 before achieving full engagement. The mounting portion 700 may remain securely attached to the natural nail 100 throughout this engagement process.

[0279] FIG. 7D illustrates the artificial nail assembly in a final engaged state where the extension portion 706 is fully engaged with the mounting portion 700, in accordance with some embodiments of the disclosure. In some embodiments, the one or more projection features 716 may be fully received within the recess features 718. In some embodiments, the projection features 716 (and/or the connector interface 704A) may be concealed beneath the extension portion 706 when fully engaged. In some embodiments, the exterior surface of the nail body 708 may form the primary exterior surface of the artificial nail, creating a seamless appearance where the mounting portion 700 is substantially hidden beneath the extension portion 706. The gap 726 visible in the intermediate state may be substantially eliminated in the fully engaged state. In some embodiments, when the mounting portion 700 and extension portion 706 are fully engaged, the mounting portion 700 is concealed beneath the extension portion 706. In some embodiment, the exterior surface of the extension portion 706 forms the entirety of the visible exterior surface of the artificial nail in the fully engaged state. The artificial nail assembly may provide the appearance of a continuous, professional-quality artificial nail while maintaining the functional benefits of interchangeable components.

[0280] In some embodiments, when the mounting portion is concealed beneath the extension portion, the concealment may include complete concealment where the mounting portion is entirely hidden from view. In some embodiments, when the mounting portion is concealed beneath the extension portion, substantial concealment where at least 90% of the mounting portion surface area is covered. In some embodiments, when the mounting portion is concealed beneath the extension portion, the projection feature is completely concealed below the extension portion. There may or may not be a small portion of the base of mounting portion that is exposed at the lateral sides of the extension portion.

[0281] In some embodiments, the transition from the intermediate state to the final engaged state may be signaled by feedback features that provide confirmation to the user that proper attachment has been achieved. In some cases, the feedback may include tactile feedback, such as a snap or resistance sensation felt when the projection features 716 reach their fully seated position within the recess features 718. In some embodiments, the feedback may include audible feedback, such as a clicking sound produced when the extension portion 706 reaches the final engaged state. The feedback features may help ensure that users achieve proper engagement and may provide confidence that the extension portion 706 is securely attached to the mounting portion 700.

[0282] FIGS. 8A-8E illustrate detailed views of the mounting portion 800 of the artificial nail assembly, in accordance with some embodiments of the disclosure. The mounting portion 800 may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the mounting portion 800 may be configured for engagement with an extension portion having one or more recess features configured to receive the projection feature of the mounting portion 800.

[0283] FIG. 8A illustrates a top view of the mounting portion 800 showing an exterior surface 802, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 800 may include a first lateral side 804, a second lateral side 806, a proximal end 808, a distal end 810, and a top side 812. In some embodiments, a longitudinal axis 814 may extend along the length of the mounting portion 800, serving as a centerline reference for purpose of illustration rather than limitation. In some embodiments, a horizontal axis 816 may extend across the mounting portion 800, serving as a midline reference for purpose of illustration rather than limitation. In some embodiments, a projection feature 818 may extend outwardly from the exterior surface 802 along the longitudinal axis 814. In some embodiments, the projection feature 818 may include a T-shaped or dual flange configuration having multiple flanges 820 that project laterally from opposing sidewalls of the projection feature 818 toward the respective first lateral side 804 and second lateral side 806. In some embodiments, although two flanges 820 are illustrated, the projection feature 818 may include a single flange or multiple flanges depending on the desired retention characteristics. In some embodiments, the flanges 820 are positioned at an uppermost portion of the projection feature 818. In some embodiments, a connecting surface extends between the flanges 820, wherein the flanges 820 and the connecting surface together form an uppermost surface of the projection feature 818.

[0284] In some embodiments, the mounting portion includes a feedback feature 822. In some embodiments, the feedback feature 822 is disposed on the projection feature 818. In some embodiments, the feedback features 822 is disposed on the uppermost surface of the projection features 818. In some embodiments, the feedback feature 822 includes a recess 822 disposed on the exterior surface of the projection feature 818. In some embodiments, the reciprocal feedback feature, such as a spherical feature, can be disposed on the extension portion. In some embodiments, the mounting portion 800 may exhibit symmetry about the longitudinal axis 814, where the configuration on either side of the longitudinal axis 814 may be substantially mirror images of one another.

[0285] FIG. 8B illustrates a bottom view of the mounting portion 800 showing a bottom side 824, in accordance with some embodiments of the disclosure. In some embodiments, the bottom side 824 may include a smooth configuration. In some embodiments, the bottom side 824 may include texturing to promote adhesion to a natural nail. In some embodiments, the bottom side 824 may include an adhesive layer disposed thereon. In some embodiments, the bottom side 824 corresponds to the first surface of the base and is configured to attach to the natural nail. FIG. 8C illustrates a distal end view of the mounting portion 800 showing the front profile of the projection feature 818, in accordance with some embodiments of the disclosure. In some embodiments, the distal end 810 may show the projection feature 818 having one or more flanges 820 that project laterally from opposing sidewalls 826 toward the respective lateral sides of the mounting portion 800. In some embodiments, each of the flanges 820 can be considered part of the respective sidewall 826. In some embodiments, the projection feature 818 may include the opposing sidewalls 826 that connect the flanges 820 to a base 828 of the mounting portion 800. In some embodiments, the sidewalls 826 may taper toward the base 828, creating a dovetail-like configuration for retention of an extension portion.

[0286] FIG. 8D illustrates a rear view of the mounting portion 800 showing the proximal end 808, in accordance with some embodiments of the disclosure. In some embodiments, the rear view may show a back side 830 of the base 828 and a back side 832 of the projection feature 818. In some embodiments, the projection feature 818 may taper or curve into the base 828 toward the proximal end 808. In some embodiments, the tapering or curving may provide a smooth transition from the projection feature 818 to the base 828.

[0287] FIG. 8E illustrates a right-side profile view of the mounting portion 800, in accordance with some embodiments of the disclosure. In some embodiments, the side profile may show the projection feature 818 having a single flange 820 visible from the side view. In some embodiments, the flange 820 and exterior surface of the projection feature 818 may curve into the base 828 along the longitudinal axis, as illustrated by curvature 829 (also referred to as curve 829 herein). In some embodiments, a center of the projection feature 818 is offset from a midline of the base 828 toward the proximal end 808. In some embodiments, the base 828 includes a first curvature 831 along the longitudinal axis, and the projection feature 818 includes a second curvature (e.g., curvature 829) along the longitudinal axis that is greater than the first curvature 831 of the base 828. In some embodiments, the second curvature 829 of the projection feature 818 causes the projection feature 818 to curve into the base 828 near the proximal end 808. In some embodiments, the mounting portion 800 may exhibit asymmetry about the horizontal axis 816, where the configuration above and below the horizontal axis 816 may differ in thickness, curvature, or other structural characteristics. In some embodiments, the curves depicted by the base 828 and projection feature 818 as well as the curved dashed lines representing the curves of each are illustrated in the figure. In some embodiments, the projection feature 818 may include a curvature that is greater than a curvature of the base 828, as illustrated by the projection feature 818 curving into the base 828. In some embodiments, the mounting portion 800 may exhibit asymmetry about the horizontal axis 816, where the configuration above and below the horizontal axis 816 may differ in thickness, curvature, or other structural characteristics.

[0288] In some embodiments, the curvature 829 and/or positioning of at least some of the projection feature 818 toward the proximal end 808 may provide enhanced retention characteristics by creating a mechanical advantage that resists lifting forces applied to the extension portion during use (e.g., at the distal end of the extension portion). In some embodiments, the greater curvature 829 of the projection feature 818 relative to the curvature 831 of the base 828 may facilitate smooth engagement with the extension portion while providing secure retention once fully engaged. In some embodiments, the projection feature 818 may taper in height along the longitudinal axis from the distal end 810 toward the proximal end 808, where the height of the projection feature 818 is shorter at the proximal end 808 than at the distal end 810.

[0289] In some embodiments, the asymmetric configuration about the horizontal axis 816 may replicate the natural profile of a fingernail, where the mounting portion 800 is thicker toward the distal end 810 to accommodate the projection feature 818 and gradually tapers toward the proximal end 808 for a comfortable fit against the natural nail surface. In some embodiments, this asymmetric profile may provide structural support for the projection feature 818 while maintaining an aesthetically pleasing appearance that blends seamlessly with the natural nail contour. In some embodiments, the height tapering of the projection feature 818 from the distal end 810 to the proximal end 808 may ensure that the proximal end of the extension portion is seated closely and tightly to the proximal end 808 of the mounting portion 800.

[0290] In some embodiments, the side profile view may reveal the height variation of the projection feature 818 along its length, where the projection feature 818 tapers from a greater height at the distal end 810 to a shorter height at the proximal end 808 along the longitudinal axis. In some embodiments, this height tapering may provide a graduated engagement profile that facilitates initial positioning of the extension portion while ensuring secure retention in the final engaged state, with the reduced height at the proximal end 808 allowing the extension portion to seat flush against the mounting portion 800.

[0291] FIG. 8F illustrates a top view of the mounting portion 800 with a tab 834 attached to the distal end 810, in accordance with some embodiments of the disclosure. In some embodiments, the tab 834 may extend outwardly from the distal end 810 of the mounting portion 800 to provide a gripping surface for handling during installation and positioning on the natural nail. In some embodiments, the tab 834 may include a flat configuration that extends substantially in the same plane as the top side 812 of the mounting portion 800. In some embodiments, the tab 834 may provide a convenient surface for users to grasp when applying the mounting portion 800 to the natural nail, particularly when the mounting portion 800 is relatively small and may be difficult to handle without additional gripping features.

[0292] In some embodiments, the tab 834 may be positioned at the distal end 810 to avoid interference with the natural nail surface when the mounting portion 800 is applied. In some embodiments, the tab 834 may be configured to be removed after installation of the mounting portion 800 on the natural nail, such as by cutting, tearing, or breaking along a perforated line or weakened section. In some embodiments, the tab 834 may remain attached to the mounting portion 800 during use and may be concealed beneath the extension portion when the artificial nail assembly is in the fully engaged state.

[0293] In some embodiments, alternative tab configurations may be implemented depending on the desired handling characteristics and user preferences. In some embodiments, the tab may include a curved configuration or straight configuration that follows the contour of the mounting portion 800. In some embodiments, the tab may include a folded configuration that extends upwardly or downwardly from the plane of the mounting portion 800. In some embodiments, the tab may include a textured surface to enhance grip during handling. In some embodiments, the tab may include multiple projections or finger-like extensions to provide additional gripping surfaces. In some embodiments, the tab may include a loop or ring configuration that allows insertion of a finger or tool for manipulation. In some embodiments, the tab 834 may be formed from the same material as the mounting portion 800. In some embodiments, the tab 834 may be formed from a different material that mounting portion 800.

[0294] In some embodiments, the base 828 of the mounting portion 800 may include or be formed from a nail sticker, and the projection features 818 may be attached to or integrally formed with the nail sticker. In some embodiments, the nail sticker may be formed of a first material while the projection features 818 are formed of a second material different than the first material. In some embodiments, the nail sticker base may provide a thin, flexible, and conformable substrate that adheres directly to the surface of the natural nail. In some embodiments, the nail sticker base may be pre-formed with a curvature corresponding to a natural nail shape and may carry one or more projection features 818 configured to engage with corresponding recess features of an extension portion, thereby forming a releasable connector interface.

[0295] In some embodiments, the nail sticker base may be formed as a thin laminate or film layer configured to conform intimately to the curvature of the natural nail. In some embodiments, the nail sticker base may have a thickness in the range of about 0.05 millimeters (mm) to about 0.8 mm. In some embodiments, the nail sticker may be formed as a monolithic layer or as a multilayer composite, including a decorative upper layer, an adhesive layer, and an optional release liner. In some embodiments, the projection features 818 may extend outwardly from the upper surface of the nail sticker base opposite the adhesive surface. When attached to the natural nail, the projection features 818 may project outwardly to define the first connector interface configured to engage with the second connector interface of an extension portion.

[0296] In some embodiments, the nail sticker base may be formed of a flexible polymeric film or gel material that may be sufficiently soft to conform to the nail surface yet strong enough to support the projection features 818. In some embodiments, suitable materials may include thermoplastic polyurethane (TPU), polyurethane acrylate (PUA), thermoplastic elastomers (TPE), polyethylene terephthalate (PET) film, polyacrylate gel materials including semi-cured UV or LED curable gel sheets, or silicone-based elastomeric films. In some embodiments, the nail sticker may be formed from a semi-cured gel composition, wherein the polymerization of the gel may be partially completed prior to packaging, providing a tacky, flexible film that may be further cured by exposure to light after application. In some embodiments, the light-curable material of the nail sticker can be cured with a light source after the nail sticker is arranged and adhered to the nail, providing enhanced bonding strength and durability of the attachment.

[0297] In some embodiments, the nail sticker base may exhibit controlled flexibility that enables it to conform and adhere securely to the curved and irregular surface of a natural nail while maintaining stable support for the projection features 818. In some embodiments, the flexibility may be characterized by a bending modulus or Shore hardness lower than that of a rigid extension portion. In some embodiments, the nail sticker base may have a Shore A hardness between about 20 and about 70, or a bending modulus between about 5 MPa and about 500 MPa, allowing it to flex without permanent deformation or delamination. In some embodiments, the nail sticker base may deflect elastically under light pressure to match the local curvature of the user's nail plate and may distribute the adhesive layer uniformly across the attachment surface, thereby reducing trapped air pockets and increasing bond area. In some embodiments, the upper surface of the nail sticker base may flex slightly in response to forces encountered during engagement and disengagement of the extension portion, allowing the connector interface to accommodate minor angular misalignment or variations in curvature between the extension portion and the mounting portion 800.

[0298] In some embodiments, the underside of the nail sticker base may include a pre-applied adhesive layer configured to bond to the natural nail upon finger pressure or light curing. The adhesive layer may be a pressure-sensitive adhesive, a semi-cured gel adhesive, or a light-curable adhesive composition. In some embodiments, the adhesive layer may have a thickness between about 0.01 mm and about 0.1 mm and may be protected by a removable release liner prior to application.

[0299] In some embodiments, the projection features 818 may include a base flange, anchor portion, or textured underside that is embedded within or bonded to the nail sticker material to enhance mechanical coupling between the flexible film and the rigid projections. The connection between the projection features 818 and the nail sticker base may be achieved by co-molding, heat sealing, ultraviolet (UV) curing, or adhesive bonding.

[0300] In some embodiments, the flexible nail sticker base provides a compliant mounting surface that can conform to nail curvature without mechanical reshaping or adhesive gaps. This flexibility enhances user comfort and adhesion reliability while maintaining compatibility with the connector interfaces described herein.

[0301] In some embodiments, the nail sticker base and the projection features may be manufactured as separate components and assembled. In some embodiments, the nail sticker base and the projection features may be co-molded in a continuous process. In some embodiments, projection features 818 may be positioned within a mold and partially encapsulated by the nail sticker material during curing to form a hybrid flexible-rigid mounting portion.

[0302] In some embodiments, the nail sticker material may be further cured under a UV or LED light source emitting at wavelengths between about 350 nm and about 420 nm for a duration between about 10 seconds and about 60 seconds to complete polymerization and increase hardness.

[0303] FIGS. 8G-8H illustrate detailed views of the extension portion 836 of the artificial nail assembly, in accordance with some embodiments of the disclosure. The extension portion 836 may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the extension portion 836 may be configured for engagement with a mounting portion having a T-shaped or dual flange projection feature and feedback mechanisms.

[0304] FIG. 8G illustrates a top view of the bottom side 838 of the extension portion 836 showing a nail body 840, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 836 may include a first lateral side 842, a second lateral side 844, a proximal end 846, a distal end 848, a top side 850, and the bottom side 838. In some embodiments, a horizontal axis 852 may extend across the extension portion 836. Horizontal axis 852 is illustrated as a midline reference for purposes of illustration, rather than limitation. In other embodiments, horizontal axis 852 is not the midline reference. In some embodiments, a longitudinal axis 854 may extend along the length of the extension portion 836. Longitudinal axis 854 is illustrated as a centerline reference for purposes of illustration, rather than limitation. In other embodiments, longitudinal axis 854 is not the centerline reference.

[0305] In some embodiments, the extension portion 836 may include a recess feature 856 that defines a second connector interface configured to engage with the first connector interface of the mounting portion. In some embodiments, the recess feature 856 includes a cavity 858 formed within the bottom side 838 of the nail body 840. In some embodiments, the cavity 858 is not visible from the top side 850 and is completely located at the bottom side 838. In some embodiments, the recess feature 856 includes reciprocal features configured to receive the T-shaped or dual flange projection feature of the mounting portion.

[0306] In some embodiments, the extension portion 836 may include a feedback feature 860 disposed within the recess feature 856. In some embodiments, the feedback feature 860 includes a spherical feature positioned at the distal end 848 of the recess feature 856. In some embodiments, the spherical feedback feature 860 is configured to engage with a corresponding recess in the mounting portion to provide tactile and/or audible confirmation when the extension portion 836 reaches full engagement. In some embodiments, the feedback features may be reversed such that the spherical feature is positioned on the mounting portion while a corresponding recess is positioned on the extension portion 836.

[0307] In some embodiments, the nail body 840 includes an almond shape for illustration purposes, though alternative configurations may be implemented including oval, rectangular, coffin, stiletto, square, or other nail shapes. In some embodiments, the extension portion 836 may exhibit symmetry about the longitudinal axis 854, where the configuration on either side of the longitudinal axis 854 may be substantially mirror images of one another. In some embodiments, the extension portion 836 may exhibit asymmetry about the horizontal axis 852. In some embodiments, the configuration above or below the horizontal axis 852 may differ in thickness, curvature, or other structural characteristics.

[0308] FIG. 8H illustrates a perspective view of the extension portion 836 looking at the proximal end 846 with the bottom side 838 facing upward, in accordance with some embodiments of the disclosure. In some embodiments, the perspective view shows the bottom side 838 and the recess feature 856 with the cavity 858 clearly visible. In some embodiments, the recess feature 856 includes an undercut 862 on at least one lateral side that corresponds to the flange of the mounting portion projection feature. In some embodiments, the undercut 862 may be positioned on both lateral sides of the cavity 858 to accommodate the dual flange configuration of the mounting portion.

[0309] In some embodiments, the spherical feedback feature 860 is visible within the cavity 858 at the distal end 848 of the recess feature 856. In some embodiments, the feedback feature 860 projects from the roof of the recess feature 856. In some embodiments, the cavity 858 is deeper at the distal end 848 than at the proximal end 846, corresponding to the height tapering of the projection feature of the mounting portion.

[0310] In some embodiments, the cavity 858 includes a curved profile along the longitudinal axis 854 that corresponds to the curvature of the mounting portion projection feature. In some embodiments, the cavity 858 may include surface texturing or micro-roughness configured to enhance frictional retention with the projection feature of the mounting portion. In some embodiments, the recess feature 856 may include alignment features or guide surfaces that facilitate proper positioning of the extension portion 836 relative to the mounting portion during engagement.

[0311] FIG. 8I illustrates a bottom view of the artificial nail assembly 868 showing the mounting portion 800 and extension portion 836 in a fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 800 is fully contained within the bottom side 838 of the extension portion 836. In some embodiments, the mounting portion 800 is narrower between the lateral sides than the extension portion 836, and shorter between the ends than the extension portion 836. In some embodiments, the projection feature of the mounting portion 800 is fully received within the recess feature 856 of the extension portion 836, creating a secure mechanical connection between the components.

[0312] In some embodiments, the bottom view shows how the mounting portion 800 is positioned within the footprint of the extension portion 836, with the extension portion 836 extending beyond the boundaries of the mounting portion 800 in all directions.

[0313] FIG. 8J illustrates a top view of the artificial nail assembly 868 showing the mounting portion 800 and extension portion 836 in a fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the top view shows the exterior surface 870 of the artificial nail assembly 868, which includes the exterior surface of the extension portion 836. In some embodiments, the mounting portion 800 is concealed and not visible from the top view when the components are fully engaged. In some embodiments, the exterior surface 870 provides a continuous and unified appearance across the entire artificial nail assembly 868.

[0314] In some embodiments, the exterior surface 870 may include decorative features, polish, nail art, or other aesthetic enhancements applied to the extension portion 836. In some embodiments, the seamless integration of the mounting portion 800 beneath the extension portion 836 creates the appearance of a single, continuous artificial nail structure while maintaining the functional benefits of interchangeable components.

[0315] FIGS. 8K-8P illustrate extension portions with different nail body shapes having recess features as previously described, in accordance with some embodiments of the disclosure. The extension portions shown in FIGS. 8K-8P may include the same recess feature 856, cavity 858, feedback feature 860, and connector interface configurations described in connection with FIGS. 8G and 8H unless otherwise indicated.

[0316] FIG. 8K illustrates a top view of an extension portion 872 having a stiletto shape, in accordance with some embodiments of the disclosure. In some embodiments, the stiletto-shaped extension portion 872 includes a pointed distal end and tapered sides that create an elongated, narrow profile. In some embodiments, the recess feature and connector interface are not visible from the top view but are positioned on the bottom side of the extension portion 872.

[0317] FIG. 8L illustrates a bottom view of the stiletto-shaped extension portion 872 showing the recess feature 874 and connector interface, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 874 includes the same cavity, undercut, and feedback feature configurations described in connection with FIGS. 8G and 8H.

[0318] FIG. 8M illustrates a top view of an extension portion 876 having a coffin shape, in accordance with some embodiments of the disclosure. In some embodiments, the coffin-shaped extension portion 876 includes a tapered distal end with straight sides that create a rectangular profile with angled corners. In some embodiments, the recess feature and connector interface are not visible from the top view but are positioned on the bottom side of the extension portion 876.

[0319] FIG. 8N illustrates a bottom view of the coffin-shaped extension portion 876 showing the recess feature 878 and connector interface, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 878 includes the same cavity, undercut, and feedback feature configurations described in connection with FIGS. 8G and 8H.

[0320] FIG. 8O illustrates a top view of an extension portion 880 having a curved square shape, in accordance with some embodiments of the disclosure. In some embodiments, the curved square-shaped extension portion 880 includes rounded corners and slightly curved sides that create a softened rectangular profile. In some embodiments, the recess feature and connector interface are not visible from the top view but are positioned on the bottom side of the extension portion 880.

[0321] FIG. 8P illustrates a bottom view of the curved square-shaped extension portion 880 showing the recess feature 882 and connector interface, in accordance with some embodiments of the disclosure. In some embodiments, the recess feature 882 includes the same cavity, undercut, and feedback feature configurations described in connection with FIGS. 8G and 8H.

[0322] In some embodiments, the extension portions may be provided in a variety of shapes, including but not limited to square, squoval, oval, round, almond, coffin (ballerina), stiletto, and edge shapes. The curvature and tip geometry of each shape may be configured to correspond to the connector interfaces of the mounting portions to maintain alignment and a continuous exterior surface.

[0323] FIGS. 9A-9D illustrate profile views of the mounting portion and extension portion in various engagement states, showing the mechanical advantage provided by positioning projection features toward the proximal end for enhanced retention, in accordance with some embodiments of the disclosure. The mounting portion and extension portion shown in FIGS. 9A-9D may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, the extension portion is shown in a translucent view to illustrate the internal engagement between the projection and recess features during the connection process.

[0324] FIG. 9A illustrates a profile view of the mounting portion 900 and extension portion 902 in a disconnected state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 900 includes a base 904 having a first surface configured to attach to a natural nail and a second surface opposite the first surface. In some embodiments, one or more projection features 906 extend outwardly from the second surface of the base 904, defining a first connector interface. In some embodiments, the extension portion 902 includes a nail body 908 and one or more recess features 910 that define a second connector interface configured to engage with the first connector interface of the mounting portion 900. In some embodiments, the extension portion 902 is positioned above the mounting portion 900 and aligned for engagement, with the recess features 910 positioned to receive the projection features 906.

[0325] FIG. 9B illustrates a profile view of the mounting portion 900 and extension portion 902 in a partially engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 902 is tilted downwardly with respect to its final position to facilitate engagement of the recess features 910 with the projection features 906. In some embodiments, the engagement path follows a curved trajectory, where the extension portion 902 is angled during initial contact and gradually rotates toward its final horizontal position as the connector interfaces engage. In some embodiments, this curved engagement path may accommodate the curvature of the projection features 906 and may provide smooth insertion of the projection features 906 into the recess features 910.

[0326] FIG. 9C illustrates a profile view of the mounting portion 900 and extension portion 902 in a fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the projection features 906 are fully received within the recess features 910, creating a secure mechanical connection between the components. In some embodiments, the engaged connector interfaces 912 are illustrated with shading to show the areas where the projection features 906 and recess features 910 are in contact. In some embodiments, the extension portion 902 is positioned horizontally and flush with the mounting portion 900, creating a unified artificial nail assembly.

[0327] FIG. 9D illustrates a profile view of the mounting portion 900 and extension portion 902 in the fully engaged state with an applied force, in accordance with some embodiments of the disclosure. In some embodiments, a downward force 914 is applied to a distal end 916 of the extension portion 902, simulating typical usage conditions where pressure may be applied to the artificial nail. In some embodiments, a portion of the engaged connector interfaces 918 are highlighted with shading to illustrate the areas that provide retention against the applied force 914. In some embodiments, the positioning of the projection features 906 toward a proximal end 920 of the mounting portion 900 creates a mechanical advantage that resists lifting forces applied to the distal end 916 of the extension portion 902.

[0328] In some embodiments, the mechanical advantage provided by the proximal positioning of the projection features 906 may prevent the proximal end of the extension portion 902 from lifting off or separating from the mounting portion 900 when forces are applied to the distal end 916. In some embodiments, the further the projection features 906 extend toward the proximal end 920, the greater the resistance to lifting forces, as the engagement point acts as a fulcrum that counteracts the applied force 914.

[0329] In some embodiments, the curved engagement path illustrated in FIG. 9B may facilitate proper seating of the connector interfaces while ensuring that the projection features 906 are positioned for retention. In some embodiments, the tilted insertion angle may allow the recess features 910 to gradually receive the projection features 906, creating a secure mechanical interlock that distributes applied forces across the engagement area. In some embodiments, the final horizontal position shown in FIGS. 9C and 9D may provide a stable configuration where the engaged connector interfaces 912 and 918 work together to maintain the connection under various loading conditions.

[0330] FIGS. 10A-10B illustrate alternative configurations of projection features for mounting portions, in accordance with some embodiments of the disclosure. The mounting portions shown in FIGS. 10A-10B may include the features and elements described in connection with previous figures unless otherwise indicated. In some embodiments, all mounting portions are symmetrical about the longitudinal axis and asymmetrical about the horizontal axis. In some embodiments, the projection features all have a greater curvature than the base and curve into the base at the proximal end. In some embodiments, all projections taper towards the proximal end and include sidewalls that extend outwardly from the base. In some embodiments, the projections differ in number, location, and shape as described below. In some embodiments, feedback features may be included though not shown in these configurations. In some embodiments, projections described herein may be mixed and matched in different embodiments, and features of some projections may be combined with features of other projections to create different projection configurations. In some embodiments, corresponding extension portions will have reciprocal recess features configured to receive these projection features. Each of the mounting portions A through J are shown in two views, side perspective view and distal end view. For example, mounting portion A is shown in a first view A1 and a second view A2, and so forth.

[0331] FIG. 10A illustrates mounting portions A through F with alternative projection feature configurations, in accordance with some embodiments of the disclosure.

[0332] Mounting portion A includes two projections 1000 located proximate the respective lateral sides of the base 1002. In some embodiments, the projections 1000 include sidewalls that are connected by a top surface. The projections 1000 extend outwardly from the base 1002. In some embodiments, the sidewall nearest the lateral side creates an undercut or angle that helps secure the extension portion to the mounting portion. In some embodiments, the angle between the inner sidewall and adjacent base toward the centerline is greater than the angle between the outer sidewall and the adjacent base toward the lateral side. In some embodiments, these are rectangular shaped projections where the angle with the base helps secure the mounting portion to the extension portion.

[0333] Mounting portion B includes the two projections of mounting portion A and two additional projections 1004 located between the projections of mounting portion A. In some embodiments, the projections 1004 include sidewalls that are connected by a top surface. The projections 1004 extend outwardly from the base. In some embodiments, the sidewall (of projection(s) 1004) nearest the lateral side creates an undercut or angle that helps secure the extension portion to the mounting portion. In some embodiments, the angle between the inner sidewall (of projections(s) 1004) and adjacent base toward the centerline is greater than the angle between the outer sidewall and the adjacent base toward the lateral side. In some embodiments, these are rectangular shaped projections where the angle with the base helps secure the mounting portion to the extension portion.

[0334] Mounting portion C includes two projections 1004 that are the same as the two inner projections of mounting portion B. In some embodiments, these projections 1004 correspond to the additional projections that were specific to mounting portion B.

[0335] Mounting portion D includes a projection 1008 along the centerline. In some embodiments, the projection 1008 includes two flanges extending outwardly at an angle from the base, with an undercut to these flanges on the sides adjacent to the lateral sides. In some embodiments, the flanges are rounded at the ends, and the other sides of the flanges slope downwards and connect at or near the centerline. In some embodiments, the angle of the flanges created between the lateral sidewall and the base creates an undercut that helps secure the mounting portion. In some embodiments, the sidewalls of the projection 1008 taper towards the base.

[0336] Mounting portion E includes the same projection as mounting portion D and two lateral projections 1010 that are each positioned to lateral sides of the projection 1018 of mounting portion D. In some embodiments, rather than being rectangular, the lateral projection sidewalls have a curve on both sides, and where they meet forms a rounded tip.

[0337] Mounting portion F includes a single projection 1012 that is T-shaped as described in connection with previous figures. In some embodiments, the T-shaped projection 1012 includes flanges that extend laterally from opposing sidewalls and provide retention characteristics for engaging with corresponding recess features of an extension portion.

[0338] FIG. 10B illustrates mounting portions G through J with additional alternative projection feature configurations, in accordance with some embodiments of the disclosure.

[0339] Mounting portion G includes a single projection 1014 that has a mushroom shape with lateral flanges and is aligned on the centerline. In some embodiments, the mushroom-shaped projection 1014 includes an enlarged head portion with flanges that extend laterally to provide retention characteristics.

[0340] Mounting portion H includes a single dovetail projection 1016 with angled sidewalls (with respect to the base) and a straight connection between the tops of the sidewalls that creates the exterior surface of the projection. In some embodiments, the dovetail configuration provides mechanical retention through the angled sidewall geometry.

[0341] Mounting portion I includes a single projection 1018 located at the centerline that has an oval shape positioned on its side, with the long side resting on the top side of the base. In some embodiments, the projection 1018 may be circular in other embodiments. In some embodiments, there is an undercut created by the sidewall that provides retention characteristics.

[0342] Mounting portion J includes two projections 1020 that correspond to the two lateral projections that were the additional projections of mounting portion E. In some embodiments, these projections 1020 include curved sidewalls that meet to form rounded tips.

[0343] FIGS. 11A-11G illustrate a reverse configuration of the artificial nail assembly where the mounting portion includes a recess feature and the extension portion includes a projection feature, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIGS. 11A-11G unless otherwise indicated. In some embodiments, the projection and recess features are the same as described in connection with FIGS. 8A-8P but in reversed configuration. In some embodiments, the reverse configurations can include any of the projection features described herein, such as those described in connection with FIGS. 10A-10B, and corresponding recess features configured to receive such projection features.

[0344] FIGS. 11A-11C illustrate detailed views of the mounting portion 1100 with a recess feature, in accordance with some embodiments of the disclosure.

[0345] FIG. 11A illustrates a perspective view looking at a distal end 1102 of the mounting portion 1100 with a recess feature 1104 along a longitudinal axis 1106, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 1100 includes a first lateral side 1108, a second lateral side 1110, a proximal end 1112, the distal end 1102, a top side 1114, and a bottom side 1116. In some embodiments, the longitudinal axis 1106 may extend along the length of the mounting portion 1100 and may serve as a centerline reference. In some embodiments, a horizontal axis 1118 may extend across the mounting portion 1100 and may serve as a midline reference. In some embodiments, the recess feature 1104 starts at the distal end 1102 with a cutout on the surface of the distal end 1102. In some embodiments, the recess feature 1104 includes a cavity 1120 that extends from the distal end 1102 toward the proximal end 1112. In some embodiments, part of the exterior surface of the mounting portion overhangs the cavity 1120 and is undercut to form an area of the cavity 1120 configured to accept flanges of a projection feature from an extension portion.

[0346] FIG. 11B illustrates a distal end view of the mounting portion 1100 showing a silhouette of the cavity 1120, in accordance with some embodiments of the disclosure. In some embodiments, the distal end view shows the opening of the recess feature 1104 and the internal geometry of the cavity 1120 configured to receive the projection feature.

[0347] FIG. 11C illustrates a perspective view looking at the distal end 1102 of the mounting portion 1100 with a tab 1126 connected to the distal end 1102, in accordance with some embodiments of the disclosure. In some embodiments, the tab 1126 may provide a gripping surface for handling during installation and positioning on the natural nail, as described in connection with FIG. 8F.

[0348] FIGS. 11D-11E illustrate detailed views of the extension portion 1128 with a projection feature, in accordance with some embodiments of the disclosure.

[0349] FIG. 11D illustrates a perspective view of the extension portion 1128 with a bottom surface 1130 pointing upward and showing a distal end 1132, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 1128 includes a projection feature 1134 that includes flanges 1136 and sidewalls 1138. In some embodiments, the projection feature 1134 and flanges 1136 are configured to engage with the recess feature 1104 of the mounting portion 1100, as described in connection with FIGS. 11A-11C.

[0350] FIG. 11E illustrates a perspective view of the extension portion 1128 with the bottom surface 1130 pointing upward and showing a proximal end 1140, in accordance with some embodiments of the disclosure. In some embodiments, the projection feature 1134 curves into the bottom surface 1130 of a nail body 1142. In some embodiments, the projection feature 1134 decreases in height along the longitudinal axis from the distal end 1132 toward the proximal end 1140, as further described in connection with FIG. 8E.

[0351] FIGS. 11F-11G illustrate the artificial nail assembly 1144 in a fully engaged state, in accordance with some embodiments of the disclosure.

[0352] FIG. 11F illustrates a perspective view of the artificial nail assembly 1144 with the bottom side pointing upward and looking at the distal end, showing engagement of connector interfaces 1146, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 1100 is fully covered beneath the extension portion 1128 when engaged.

[0353] FIG. 11G illustrates a perspective view of the artificial nail assembly 1144 with the bottom side pointing upward and looking at the proximal end, in accordance with some embodiments of the disclosure. In some embodiments, the connector interfaces are not visible in the fully engaged state, creating a seamless appearance as further described in connection with FIGS. 8I-8J.

[0354] FIGS. 12A and 12B illustrate top and bottom views of a set of artificial nails, respectively, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIGS. 12A and 12B unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described. In some embodiments, the description of FIGS. 8A-8E may apply to the mounting portions shown in FIGS. 12A and 12B. In some embodiments, the description of FIGS. 8G and 8H may apply to the extension portions shown in FIGS. 12A and 12B.

[0355] FIG. 12A illustrates a top view of a set of artificial nails showing mounting portions 1200A, 1200B, 1200C, 1200D, and 1200E, generally referred to as mounting portions 1200, and extension portions 1202A, 1202B, 1202C, 1202D, and 1202E, generally referred to as extension portions 1202, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portions 1200 may be the same as the mounting portion described in connection with FIGS. 8A-8E. In some embodiments, the extension portions 1202 may be similar to the extension portions described in connection with FIGS. 8G and 8H but with different nail body shapes. The extension portions 1202 are illustrated with stiletto-shaped nail bodies rather than the shapes shown in previous figures. In other embodiments, other shaped nail bodies are possible.

[0356] The mounting portions 1200 and extension portions 1202 are shown in an exploded or disconnected state. Each corresponding extension portion is illustrated as positioned above its corresponding mounting portion, where mounting portion 1200A corresponds to extension portion 1202A, mounting portion 1200B corresponds to extension portion 1202B, mounting portion 1200C corresponds to extension portion 1202C, mounting portion 1200D corresponds to extension portion 1202D, and mounting portion 1200E corresponds to extension portion 1202E.

[0357] In some embodiments, the set may include multiple mounting portions such as five mounting portions 1200 and/or multiple extension portions, such as five extension portions 1202 that are configured in size (e.g., mapped) to the fingers of a hand. In some embodiments, the mounting portions 1200 may be different sizes and may be sized for the different sized nails of the different fingers. In some embodiments, mounting portion 1200A may be sized for a pinky finger nail, mounting portion 1200B may be sized for a ring finger nail, mounting portion 1200C may be sized for a middle finger nail, mounting portion 1200D may be sized for an index finger nail, and mounting portion 1200E may be sized for a thumb nail. In some embodiments, only the mounting portion 1200E may be larger than the other mounting portions 1200A, 1200B, 1200C, and 1200D, which may be the same size. In some embodiments, the projection features of all mounting portions 1200 may be the same size. In some embodiments, the projection feature for the larger mounting portion 1200E may be larger, such as wider, than the projection features of the other mounting portions 1200A, 1200B, 1200C, and 1200D. In some embodiments, the extension portions 1202 may be sized correspondingly to match their respective mounting portions 1200, with all extension portions 1202 being different sizes.

[0358] In some embodiments, the mounting portions 1200 may include tabs as described in connection with FIG. 8F to provide gripping surfaces for handling during installation and positioning on the natural nail.

[0359] FIG. 12B illustrates a bottom view of the set of artificial nails depicted in FIG. 12A, wherein the components are arranged in corresponding order and orientation with the bottom surfaces visible, in accordance with some embodiments of the disclosure. In some embodiments, the bottom view may show the attachment surfaces of the mounting portions 1200 that interface with natural nails. In some embodiments, the bottom view may also show the bottom surfaces of the extension portions 1202.

[0360] In some embodiments, a kit may include one or more artificial nail assemblies, such as at least two sets of the artificial nail assemblies shown in FIGS. 12A and 12B, with one set for each hand. In some embodiments, the kit may include the same or different shaped extension portions that are all compatible with the same mounting portions 1200. In some embodiments, the kit may include extension portions with oval shapes. In some embodiments, the kit may include extension portions with rectangular shapes. In some embodiments, the kit may include extension portions with coffin shapes. In some embodiments, the kit may include extension portions with almond shapes. In some embodiments, the kit may include extension portions with square shapes.

[0361] In some embodiments, the kit may include mounting portions 1200 of different sizes corresponding to various natural nail geometries beyond the standard finger sizes. In some embodiments, the kit may include extra-small mounting portions for particularly small natural nails. In some embodiments, the kit may include extra-large mounting portions for particularly large natural nails. In some embodiments, the kit may include mounting portions with different curvatures to accommodate varying natural nail shapes.

[0362] In some embodiments, the kit may include extension portions 1202 with different lengths. In some embodiments, the kit may include short extension portions for a natural appearance. In some embodiments, the kit may include medium-length extension portions for moderate enhancement. In some embodiments, the kit may include long extension portions for dramatic length. In some embodiments, the kit may include extra-long extension portions for specialty applications.

[0363] In some embodiments, the kit may include extension portions 1202 with different colors. In some embodiments, the kit may include clear or natural-colored extension portions. In some embodiments, the kit may include colored extension portions in various shades such as red, pink, blue, purple, green, black, or white. In some embodiments, the extension portions may be formed with colored materials during manufacturing to achieve the desired color appearance. In some embodiments, the extension portions may include pre-applied polish coatings in various colors and finishes. In some embodiments, the pre-applied polish may include traditional nail polish formulations, gel polish formulations, or other coating materials that provide color and protection to the extension portion surface.

[0364] In some embodiments, the kit may include extension portions 1202 with different decorative features. In some embodiments, the kit may include extension portions with pre-applied nail art designs that are attached to or formed on the nail body from the same material as the extension portion. In some embodiments, the kit may include extension portions with textured surfaces. In some embodiments, the kit may include extension portions with embedded decorative elements such as rhinestones, pearls, or other ornamental features.

[0365] In some embodiments, the exterior surface of the mounting portions 1200 may have no coating, providing a natural or clear appearance. In some embodiments, the exterior surface of the mounting portions 1200 may have a coating such as a protective coating, decorative coating, or polish coating. In some embodiments, the exterior surface of the extension portions 1202 may have no coating, providing a natural or clear appearance. In some embodiments, the exterior surface of the extension portions 1202 may have a coating such as a protective coating, decorative coating, or polish coating.

[0366] In some embodiments, the kit may include adhesive compositions for attaching the mounting portions 1200 to natural nails. In some embodiments, the kit can include an adhesive layer, such as pre-applied adhesive layers attached on the bottom of the mounting portions 1200 or unattached. In some embodiments, the kit can include an adhesive, such as liquid or gel adhesives for application-time use.

[0367] In some embodiments, the kit may include mounting portions 1200 with pre-applied adhesive layers that are applied during manufacturing, as described in connection with FIGS. 6A and 6B. In some embodiments, these pre-adhesive layers may include pressure-sensitive adhesives, light-curable materials, heat-activatable adhesives, resin pre-adhesives, or semi-cured materials. In some embodiments, the mounting portions 1200 with pre-applied adhesive layers may include removable covers positioned over the adhesive surface to protect the pre-adhesive layer from contamination, debris, or premature activation prior to application to the natural nail.

[0368] In some embodiments, the kit may include liquid or gel adhesive compositions that are applied at the time of use rather than being pre-applied during manufacturing. In some embodiments, these application-time adhesives may include nail glue compositions such as cyanoacrylate-based adhesives or light-curable liquid resins. In some embodiments, the liquid or gel adhesive compositions may be provided in containers configured for easy application with built-in applicators.

[0369] In some embodiments, the kit may include application tools such as nail files, cuticle pushers, alcohol wipes, or applicator tools for positioning mounting portions 1200 and extension portions 1202. In some embodiments, the kit may include removal tools and solutions such as acetone or other solvents for dissolving adhesives, removal tools for safely detaching components, or moisturizing treatments for post-removal nail care.

[0370] In some embodiments, the kit may include storage containers with individual compartments for organizing different sizes of mounting portions 1200, separate storage areas for different styles or colors of extension portions 1202, or protective cases to prevent damage to components during storage or transport. In some embodiments, the kit may include instructional materials such as written instructions for applying mounting portions 1200 to natural nails, step-by-step guides for attaching extension portions 1202 to mounting portions 1200, care and maintenance instructions for extending the life of the artificial nail assemblies, or troubleshooting guides for addressing common application issues.

[0371] In some embodiments, the kit may include a light source such as a UV light or LED light for curing light-curable materials. In some embodiments, the kit may include a primer for preparing the natural nail surface before application of the mounting portions 1200. In some embodiments, the kit may include a base coat for application to the mounting portions 1200 or extension portions 1202. In some embodiments, the kit may include polish for application to the mounting portions 1200 or extension portions 1202.

[0372] FIGS. 13A-13G illustrate elements of a three-part artificial nail assembly, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the configurations shown in FIGS. 13A-13G unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described.

[0373] In some embodiments, the artificial nail system may include a three-part assembly that includes a mounting portion, an intermediate portion (also referred to as adapter portion or intermediate adapter herein), and an extension portion. In some embodiments, the mounting portion may be the same as described in connection with previous figures, configured to attach to the user's natural nail and including a base having a first surface. In some embodiments, the first surface of the base can include a pre-adhesive layer for secure attachment and an opposite second surface defining a first connector interface with projection features extending outwardly. In some embodiments, the first surface of the base does not include a pre-adhesive layer. In some embodiments, the intermediate portion may be releasably attachable to the mounting portion and serves as an intermediate coupling element between the mounting portion and the extension portion. In some embodiments, the intermediate portion may include a second connector interface having recess features that engage with the projection features of the mounting portion. The surface opposite the bottom surface and opposite second connector interface includes an attachment surface for the extension portion. In some embodiments, the extension portion may include a nail body with a bottom surface that interfaces directly with the top surface of the intermediate portion. In some embodiments, neither the bottom surface of the extension portion nor the top surface of the intermediate portion includes projection or recess features, allowing for standard artificial nail extensions to be used.

[0374] In some embodiments, the intermediate portion may be formed of a rigid or semi-rigid polymeric material. In some embodiments, the intermediate portion may be shorter and/or thinner than extension portions described herein. In some embodiments, the intermediate portion can function as an adapter that provides a coupling interface between the mounting portion and the extension portion. In some embodiments, the interface between the intermediate portion and extension portion may utilize adhesive bonding, pressure-sensitive attachment, or other nail attachment materials. In some embodiments, the three-part nail assembly can permit the user to maintain the mounting portion on the natural nail for an extended period while interchanging both intermediate portions and extension portions of different shapes, colors, or designs. In some embodiments, this modular arrangement facilitates rapid style changes, minimizes damage to the natural nail, and allows the artificial nail system to adapt to a wide variety of existing artificial nail products while maintaining the convenience of the removable mounting system for the underlying components.

[0375] FIG. 13A illustrates a top view of a mounting portion 1300 showing the top side, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 1300 may be the same as mounting portion 800 described in connection with FIGS. 8A-8E. In some embodiments, although a tab is not illustrated, the mounting portion 1300 may include a tab in alternative embodiments.

[0376] FIG. 13B illustrates a bottom view of an intermediate portion 1302 showing a bottom side 1304, in accordance with some embodiments of the disclosure. In some embodiments, the intermediate portion 1302 may include a recess feature 1306 that may be the same or similar to the extension portion described herein, and in particular extension portion 836 of FIGS. 8G and 8H. In some embodiments, the recess feature 1306 is not illustrated with a feedback feature. In other embodiments, there may be a feedback feature. In some embodiments, a body 1308 of the intermediate portion 1302 may be shorter than an extension portion. In some embodiments, the body 1308 of the intermediate portion 1302 may be shorter than the mounting portion 1300. In some embodiments, the body 1308 may also be thinner than other components. In some embodiments, the intermediate portion 1302 functions as an adapter that provides a coupling interface between the mounting portion and the extension portion, allowing the extension portion to be attached without requiring its own connector interface features. In some embodiments, an exterior surface of a top side 1310 of the intermediate portion 1302 may be textured to promote adhesion. In some embodiments, an exterior surface of a top side 1310 of the intermediate portion 1302 may be smooth.

[0377] FIG. 13C illustrates a bottom view of an extension portion 1312 having a curved square shape, in accordance with some embodiments of the disclosure. In some embodiments, the extension portion 1312 may be any shape in alternative embodiments. In some embodiments, on a bottom side 1314 there are no recess features. In some embodiments, on a bottom side 1314 there are no projection features. In some embodiments, the bottom surface 1314 may be directly adhered to the intermediate portion 1302. In some embodiments, the bottom surface 1314 may include a texture. In some embodiments, the bottom surface 1314 may include a pre-adhesive layer. In some embodiments, the bottom surface 1314 may be smooth. In some embodiments, the bottom surface 1314 does not include an adhesive layer.

[0378] FIGS. 13D-13E illustrate the mounting portion 1300 and the intermediate portion 1302 in a fully engaged state, in accordance with some embodiments of the disclosure. In some embodiments, the mounting portion 1300 may include one or more projection features that are fully received within corresponding recess features of the intermediate portion 1302, creating a secure mechanical connection between the components. In some embodiments, the projection features of the mounting portion 1300 may be concealed beneath the intermediate portion 1302 when fully engaged, similar to the engagement described in connection with previous figures. In some embodiments, as illustrated, a distal end of the mounting portion 1300 extends past a distal end of the intermediate portion 1302. In other embodiments, the intermediate portion 1302 may be longer than shown, but the function remains to serve as an adapter for the extension portion rather than as a standalone extension. In some embodiments, the fully engaged mounting portion 1300 and intermediate portion 1302 create a unified base structure that is ready to receive the extension portion 1312. In some embodiments, the engagement between the mounting portion 1300 and intermediate portion 1302 may provide tactile or audible feedback to confirm proper attachment, similar to the feedback mechanisms described in connection with other embodiments herein.

[0379] FIG. 13F illustrates a side perspective view of the fully engaged mounting portion 1300 and intermediate portion 1302 with the extension portion 1312 positioned above in an exploded perspective, in accordance with some embodiments of the disclosure. In some embodiments, the distal ends of all components are visible.

[0380] FIG. 13G illustrates the fully engaged mounting portion 1300 and intermediate portion 1302 with the extension portion 1312 secured to the top position of the intermediate portion 1302, in accordance with some embodiments of the disclosure. In some embodiments, the fully engaged mounting portion 1300 and intermediate portion 1302 are concealed below the extension portion 1312. In some embodiments, when removing, the intermediate portion 1302 and extension portion 1312 may be removed as a single unit. In some embodiments, the intermediate portion 1302 and extension portion 1312 may stay attached to each other and be reused as a single unit.

[0381] FIG. 14 illustrates a method of applying an artificial nail assembly to a user's natural nail, in accordance with some embodiments of the disclosure. The features and elements described in connection with previous figures may apply to the method shown in FIG. 14 unless otherwise indicated. For the sake of brevity, the description above is not repeated here but applies, unless otherwise described. In some embodiments, the method may be applied to any type of artificial nail assemblies described herein, including two-part assemblies having a mounting portion and extension portion, and three-part assemblies having a mounting portion, intermediate portion, and extension portion.

[0382] In some embodiments, a method 1400 of applying an artificial nail assembly to a user's natural nail may include one or more of the following operations. In some embodiments, some, all, fewer, or different operations can be used in the same or different order. In some embodiments, the artificial nail assembly may include a mounting portion configured to attach to the natural nail, an extension portion configured to releasably engage with the mounting portion. In some embodiments, the artificial nail assembly can include an intermediate connector portion configured to attach to the mounting portion and to receive the extension portion.

[0383] At operation 1402, the natural nail is prepared. In some embodiments, the user or technician cleans and dries the natural nail to remove oil, debris, and prior coatings. In some embodiments, the nail surface may be lightly buffed or etched to enhance adhesion. In some embodiments, a primer or base coat may be applied to the nail surface to promote bonding between the natural nail and the mounting portion.

[0384] At operation 1404, the mounting portion is prepared. In some embodiments, the mounting portion may be prepared using one or more of several below-described approaches:

[0385] In some embodiments, the mounting portion may include a pre-applied adhesive layer covered by a removable release liner, as described in connection with FIGS. 6A-6B and FIGS. 12A-12B. In some embodiments, the user removes the liner to expose the adhesive. In some embodiments, the mounting portion is aligned with the natural nail and pressed into place.

[0386] In some embodiments, an adhesive such as cyanoacrylate, pressure-sensitive adhesive, or gel adhesive is applied to either the natural nail or the mounting portion or both. In some embodiments, the mounting portion is positioned on the nail surface, ensuring even adhesive distribution.

[0387] In some embodiments, a light-curable adhesive or semi-cured gel layer is applied between the natural nail and the mounting portion. In some embodiments, the mounting portion is placed on the nail.

[0388] In some embodiments, if the bottom surface of the mounting portion does not already include texturing, the surface may be textured to promote adhesion to the natural nail, as described in connection with previous figures.

[0389] At operation 1406, the mounting portion is secured. In some embodiments, the mounting portion is pressed and conformed to the natural nail, following the nail curvature. In some embodiments, if a flexible nail sticker base is used as described in connection with FIG. 8F, the user may press from the cuticle region toward the tip to remove air bubbles and ensure uniform contact. In some embodiments, if a light-curable adhesive, pre-adhesive layer, or nail sticker that uses a light-curable material is employed, a light source such as a UV or LED lamp may be used to cure the adhesive or material, providing enhanced bonding strength and durability. In some embodiments, the mounting portion may remain on the nail for an extended period such as days or weeks, serving as a reusable base for interchangeable extensions.

[0390] At operation 1406, the mounting portion is secured. In some embodiments, the mounting portion is pressed and conformed to the natural nail, following the nail curvature. In some embodiments, if a flexible nail sticker base is used as described in connection with FIG. 8F, the user may press from the cuticle region toward the tip to remove air bubbles and ensure uniform contact. In some embodiments, if a light-curable adhesive, pre-adhesive layer, or nail sticker that uses a light-curable material is employed, a light source such as a UV or LED lamp may be used to cure the adhesive or material, providing enhanced bonding strength and durability. In some embodiments, the mounting portion may remain on the nail for an extended period such as days or weeks, serving as a reusable base for interchangeable extensions.

[0391] In some embodiments, for three-part assemblies including an intermediate portion as described in connection with FIGS. 13A-13G, the intermediate portion is aligned with the connector interface of the mounting portion. In some embodiments, the intermediate portion may be attached via complementary recess-and-projection features, a dovetail-type coupling, or other interlocking geometries as described in connection with FIGS. 8A-8P and FIGS. 10A-10B. In some embodiments, engagement may occur through axial insertion, sliding, or press-fit movement until the parts reach a final engaged state indicated by audible or tactile feedback as described in connection with FIGS. 2A-2D and FIGS. 7A-7D. In some embodiments, the intermediate portion provides a secondary interface for attachment of one or more extension portions. In some embodiments, the intermediate portion can remain attached to the mounting portion while different extension portions are exchanged.

[0392] At operation 1408, the extension portion is attached. In some embodiments, the extension portion is aligned with the mounting portion in two-part embodiments as described in connection with FIGS. 2A-2D and FIGS. 3A-3J, or with the intermediate portion in three-part embodiments as described in connection with FIGS. 13A-13G. In some embodiments, the complementary connector interfaces are engaged by inserting projection features into recess features as described in connection with FIGS. 3A-3J and FIGS. 4A-4U, or by sliding along tracks as described in connection with FIGS. 8A-8P and FIGS. 9A-9D. In some embodiments, engagement continues until the parts reach a secure final engaged state, signaled by a click or snap as described in connection with feedback features in FIGS. 3F-3H and FIGS. 8G-8H. In some embodiments, the exterior surfaces of one or more of the components may form a continuous and unified exterior surface simulating a professional manicure as described in connection with FIGS. 3I-3J and FIGS. 8I-8J.

[0393] At operation 1410, one or more finishing operations are performed. In some embodiments, the finishing operations can include a curing operation. In some embodiments, if a light-curable adhesive or semi-cured gel sticker is used, the assembly may be exposed to a UV or LED lamp for additional curing to increase bond strength. In some embodiments, a decorative topcoat or polish may be applied to enhance shine or conceal any seam. In some embodiments, the user may then perform normal daily activities without detachment or lifting.

[0394] At operation 1412, removal is performed. In some embodiments, to change the nail design, the user may remove only the extension portion by applying a separation force opposite the engagement direction. In some embodiments, for three-part systems, the user may remove both the extension and intermediate portions together as a single unit. In some embodiments, a user may remove only the extension portion while leaving the intermediate portion attached to the mounting portion. In some embodiments, the mounting portion may remain attached to the natural nail during the removal process. In some embodiments, when complete removal is desired, the adhesive bond between the mounting portion and the natural nail can be released by gentle peeling, soaking in warm water, or using a nail adhesive remover.

[0395] At operation 1414, replacement is performed. In some embodiments, the user may replace the removed extension portion with the same extension portion or with a different extension portion having alternative colors, shapes, lengths, or decorative features. In some embodiments, for two-part systems, the replacement extension portion is aligned with the mounting portion and engaged using the same process described in operation 1408. In some embodiments, for three-part systems, if only the extension portion was removed, the replacement extension portion is attached to the intermediate portion that remained in place. In some embodiments, for three-part systems, if both the extension and intermediate portions were removed together, the user may reattach the same combination or may select a different intermediate portion and extension portion combination before engaging with the mounting portion. In some embodiments, the replacement process allows for rapid style changes while maintaining the mounting portion attachment to the natural nail as described in connection with FIGS. 6A-6B and FIGS. 12A-12B.

[0396] In some embodiments, the method 1400 may be adapted for different artificial nail assembly configurations described herein, including assemblies with various projection and recess feature arrangements as described in connection with FIGS. 4A-4U and FIGS. 5A-5X, different nail body shapes as described in connection with FIGS. 8K-8P, and alternative mounting portion configurations as described in connection with FIGS. 10A-10B and FIGS. 11A-11G.

[0397] Described herein are various embodiments of artificial nails, kits, systems and methods of use thereof. It is to be understood that the aspects of the disclosure are not limited to the details of construction or process steps set forth in the description. Aspects of the disclosure can be used to describe other embodiments and of being practiced or being carried out in a variety of ways.

[0398] Reference throughout this specification to one embodiment, certain embodiments, one or more embodiments, some embodiments, or an embodiment or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrases such as in one or more embodiments, in certain embodiments, in one embodiment, in some embodiments, or in an embodiment or the like in various places throughout this specification are not necessarily referring to the same embodiment of the invention. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments.

[0399] As used herein, the singular forms a, an, and the include plural references unless the context clearly indicates otherwise. Thus, for example, reference to an attachment includes a single attachment as well as multiple attachments. The words example or exemplary are used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as example or exemplary is not necessarily to be construed as preferred or advantageous over other aspects or designs. Rather, use of the words example or exemplary is intended to present concepts in a concrete fashion. As used in this application, the term or is intended to mean an inclusive or rather than an exclusive or. That is, unless specified otherwise, or clear from context, X includes A or B is intended to mean any of the natural inclusive permutations. That is, if X includes A; X includes B; or X includes both A and B, then X includes A or B is satisfied under any of the foregoing instances.

[0400] As used herein, the term about or substantially in connection with a measured quantity or features, refers to the normal variations in that measured quantity or feature as expected by one of ordinary skill in the art in making the measurement and exercising a level of care commensurate with the objective of measurement and the precision of the measuring equipment. In certain embodiments, the term about or substantially includes the recited measurement 15% (or 10% or 5%) of that measurement and/or includes 15% (or 10% or 5%) of a measurement for the particular feature. For example, about 10 would include from 8.5 to 11.5, and substantially flat would include variations within 15% of the measurement for flatness as determined by standard measurement techniques for the relevant property. These interpretations of the terms can apply, unless otherwise described herein.

[0401] Spatially relative terms, such as above, below, over, under, between, on, rear, front, back, top, bottom, side, lateral, proximal, distal, longitudinal, horizontal, vertical, and so forth as used herein refer to a relative position of one element with respect to another element. Unless otherwise specified, the spatially relative terms are not intended to be limiting to the absolute orientation, and are intended to encompass different orientations (e.g., rotated 90 degrees, flipped, inverted, etc.) of elements in addition to the orientation depicted in the Figures. For example, if elements in the Figures are rotated 180 degrees, elements described as top elements can then be considered oriented as bottom elements, and elements described as front elements can then be considered oriented as back elements, without deviating from aspects of the disclosure.

[0402] Although the disclosure herein is with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the compositions and methods without departing from the spirit and scope of the invention. Thus, it is intended that the invention include modifications and variations that are within the scope of the appended claims and their equivalents.