Expandable and collapsible support device and operating methods therefor
10595644 ยท 2020-03-24
Assignee
Inventors
Cpc classification
A47C19/126
HUMAN NECESSITIES
A45F3/04
HUMAN NECESSITIES
F41H5/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
A45F2003/003
HUMAN NECESSITIES
F41H3/00
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
A47C1/14
HUMAN NECESSITIES
A47C4/28
HUMAN NECESSITIES
A45F3/04
HUMAN NECESSITIES
F41H5/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
An expandable and collapsible support device for multiple use enables attaining an expanded open state for use or return to a compact closed state in mere seconds. The device includes an accordion-style frame that expands laterally from a compact closed state to an expanded open state for use, and a material support cover forming the top of the device and attachable to the frame to provide a support surface above ground level for the device.
Claims
1. An expandable and collapsible support device, comprising: a first frame assembly with a first support bar and first and second slider arms, the first support bar extending transversely from a first end region on a first side of the device to a second end region on a second side of the device, each of the first and second slider arms extending from a proximal end to a distal free end, the proximal ends of the first and second slider arms rotatably connected to the first and second end regions of the first support bar, respectively, wherein each of the first and second slider arms is movable from a first position with the free end adjacent to the first support bar to a second position forming an obtuse angle with the first support bar; a second frame assembly with a second support bar and third and fourth slider arms, the second support bar extending transversely from a first end region on the first side of the device to a second end region on the second side of the device, each of the third and fourth slider arms extending from a proximal end to a distal free end, the proximal ends of the third and fourth slider arms rotatably connected to the first and second end regions of the second support bar, respectively, wherein each of the third and fourth slider arms is movable from a first position with the free end adjacent to the second support bar to a second position forming an obtuse angle with the second support bar; at least one first link arm extending between and connected across the first slider arm and the third slider arm; and at least one second link arm extending between and connected across the second slider arm and the fourth slider arm; wherein the first frame assembly is movable relative to the second frame assembly via the at least one first and second link arms such that the device has a closed position and an expanded position, wherein the first and second frame assemblies are adjacent to one another with the associated slider arms in the first positions in the closed position, and wherein the first and second frame assemblies are spaced apart from one another with the associated slider arms in the second positions in the expanded position.
2. The device of claim 1 wherein the distal end of each of the slider arms is rotatably connected to an associated support bar via an associated hinge assembly.
3. The device of claim 2 wherein each hinge assembly further comprises a pin extending through an associated end region of the support bar.
4. The device of claim 3 wherein each hinge assembly further comprises another pin extending through an associated proximal end of the slider arm.
5. The device of claim 4 wherein each hinge assembly further comprises a link element extending between and connecting an associated support bar to an associated slider arm, the pin and the another pin extending through the link element.
6. The device of claim 2 wherein the first support bar and the second support bar translate along a longitudinal axis of the device.
7. The device of claim 6 wherein each hinge assembly provides an axis of rotation that is parallel to the longitudinal axis.
8. The device of claim 6 wherein the first support bar and first and second slider arms extend in a first plane; wherein the second support bar and third and fourth slider arms extend in a second plane parallel to the first plane; and wherein the longitudinal axis is perpendicular to the first and second planes.
9. The device of claim 2 wherein each hinge assembly further comprises a support bar collar attached to an associated end region of the support bar and a slider collar attached to an associated proximal end of the slider arm.
10. The device of claim 1 wherein movement of each slider arm is limited at the obtuse angle by an associated limit stop location, the limit stop location provided by abutting surfaces of an associated end region of the support bar and associated proximal end of the slider arm.
11. The device of claim 1 wherein each of the slider arms rotates through more than one-hundred-and-eighty degrees from the respective first position to the respective second position.
12. The device of claim 1 further comprising: a third frame assembly with a third support bar and fifth and sixth slider arms, the third support bar extending transversely from a first end region on the first side of the device to a second end region on the second side of the device, each of the fifth and sixth slider arms extending from a proximal end to a distal free end, the proximal ends of the fifth and sixth slider arms rotatably connected to the first and second end regions of the third support bar, respectively, wherein each of the fifth and sixth slider arms is movable from a first position with the free end adjacent to the third support bar to a second position forming an obtuse angle with the third support bar; at least one third link arm extending between and connecting the third slider arm to the fifth slider arm; and at least one fourth link arm extending between and connecting the fourth slider arm to the sixth slider arm; wherein the second frame assembly is positioned between the first and third frame assemblies; and wherein the third frame assembly is movable relative to the first and second frame assemblies via the at least one third and fourth link arms.
13. The device of claim 1 wherein each of the at least one first and second link arms is provided by an associated set of scissor arms.
14. The device of claim 13 wherein each set of scissor arms further comprises a plurality of interconnected segments with a central pivot connection, first and second pivot connections to two associated slider arms, and first and second sliding pivot connections to the two associated slider arms, wherein each of the at least one first and second link arms forms the plurality of interconnected segments for the associated set of scissor arms.
15. The device of claim 1 further comprising a cover supported by the free ends of each of the slider arms and spaced apart from the first and second support bars with the device in the expanded position.
16. The device of claim 15 wherein a central region of the cover defines an aperture therethrough, the cover with a flap attachment sized to extend over the aperture.
17. The device of claim 15 further comprising a semi-rigid sheet connected to a portion of the cover and extending from an intermediate region of the cover to a first end of the cover; and at least one anchoring line extending from the first end of the cover towards a second opposite end of the cover and connected to the frame assemblies, the at least one anchoring line to maintain the portion of the cover at an angle relative to another portion of the cover to provide a lounge chair configuration for the device.
18. The device of claim 15 further comprising a semi-rigid sheet connected to a portion of the cover and extending from an intermediate region of the cover to a first end of the cover; and at least one pole extending from the first end of the cover to the underlying frame assemblies, the at least one pole to maintain the portion of the cover at an angle relative to another portion of the cover to provide a lounge chair configuration for the device.
19. The device of claim 1 wherein the first and second support bars support the device on a ground surface.
20. The device of claim 1 further comprising a travel bag sized to receive the device in the closed position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Example embodiments will become more fully understood from the detailed description given herein below and the accompanying drawings, wherein like elements are represented by like reference numerals, which are given by way of illustration only and thus are not limitative of the example embodiments herein.
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DETAILED DESCRIPTION
(28) As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
(29) As to be described in detail hereafter, the example embodiments introduce an expandable and collapsible support device which includes an accordion-style frame that expands laterally from a compact closed state to an expanded open state, and a material support cover attached or attachable to the frame to provide a support surface above ground level for the device. The example embodiments also introduce operating methods to quickly open, from a compact closed state, and quickly close, to a compact state from an expended open state, the device in mere seconds.
(30) In the following description, certain specific details are set forth in order to provide a thorough understanding of various example embodiments of the disclosure. However, one skilled in the art will understand that the disclosure may be practiced without these specific details. In other instances, well-known structures associated with manufacturing techniques have not been described in detail to avoid unnecessarily obscuring the descriptions of the example embodiments of the present disclosure.
(31) Unless the context requires otherwise, throughout the specification and claims that follow, the word comprise and variations thereof, such as comprises and comprising, are to be construed in an open, inclusive sense, that is, as including, but not limited to.
(32) Reference throughout this specification to one example embodiment or an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases in one example embodiment or in an embodiment in various places throughout this specification are not necessarily all referring to the same embodiment. Further, the particular features, structures or characteristics may be combined in any suitable manner in one or more example embodiments.
(33) As used in this specification and the appended claims, the singular forms a, an, and the include plural referents unless the content clearly dictates otherwise. The term or is generally employed in its sense including and/or unless the content clearly dictates otherwise.
(34) As used in the specification and appended claims, the terms correspond, corresponds, and corresponding are intended to describe a ratio of or a similarity between referenced objects. The use of correspond or one of its forms should not be construed to mean the exact shape or size. In the drawings, identical reference numbers identify similar elements or acts. The size and relative positions of elements in the drawings are not necessarily drawn to scale.
(35) Referring now to
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(37) Frame 102 further comprises a plurality of support bars 105. Support bars 105 as shown are adapted to support the device 100 on a ground or planar surface, in the expanded open state, in adjacent relation to one another and arranged in a width-wise direction of the device 100. The support bars 105 are thus laterally extendible and collapsible along a lengthwise plane of the device 100.
(38) Device 100 can be configured into any dimensions in both its closed and open states. In one example, and in its compact state, no dimension of the device 100 exceeds 20 inches in length, with a length of 21 inches or less, a width of 10 inches or less, and a height less than 2.1 inches. Of course applications may dictate larger or smaller configurations, it being understood that the compact state dimensions of device 100 lend it to ease of storage and transport. As an example,
(39) Frame 102 also provides a plurality of slider arms 130 in adjacent relation to one another and extendible and collapsible along the lengthwise plane on each side of the device 100, and two sets of scissor arms 110. Each scissor arm set 110 is connected across the slider arms 130 and arranged on either lengthwise side of the device 110. Each scissor arm set 110 is also thus laterally extensible and collapsible along the lengthwise plane of the device 110. Further, each scissor arm set 110 is extendable and collapsible in a plane that is perpendicular to the widthwise extension of the support bars 105 (see best in
(40) Referring to
(41) Frame 102 further includes a hinge assembly 120 provided at each interface between an end of a support bar 105 and slide arm 130. Each hinge assembly 120 enables pivoting of its correspondingly connected slider arm 130 relative to its connected support bar 105, in going from the compact closed state toward the expanded open state, so that in the expanded open state the slider arm 130 is at an obtuse angle (see best in
(42) In another example, one, some or all of the support bars 105, scissor arm sets 110, hinge assemblies 120, slider arms 130 and constituent parts thereof may be formed of a metal such as steel, Al and/or alloys of steel or aluminum using various know metalworking processes. These processes include but are not limited to CNC machining, sand casting, permanent mold casting, die casting, investment casting, ablation casting, closed-die forging, by extrusion, by cold heading, by stamping & deep drawing, via a screw machine, and through powder metallurgy, for example.
(43) Alternatively, one, some or all of the support bars 105, scissor arm sets 110, hinge assemblies 120, slider arms 130 and constituent parts thereof may be constructed primarily from lightweight moldable plastic materials such as moldable plastic, e.g., as a single or multiple parts formed by an injection molding process using a high impact plastic such as Acrylonitrile Butadiene Styrene (ABS). ABS is an easily machined, tough, low cost rigid thermoplastic material with high impact strength, and may be a desirable material for turning, drilling, milling, sawing, die-cutting, shearing, etc. Virgin ABS may be mixed with a plastic regrind of ABS or another lightweight, durable plastic material. ABS is merely an example material, equivalent materials may include various thermoplastic and thermoset materials, such as plastic reinforced with glass filled nylon (GFN), talc-filled polypropylene, high strength polycarbonates such as GE LEXAN, or blended plastics. There are many known injection molding machines for forming plastic injection molds, other plastic molding processes such as vacuum forming may be used.
(44) Material support cover 140 may be formed of any suitable material, including but not limited to canvas, vinyl, ripstop nylon, nylon, 1,000 Denier Dupont Cordura Nylon, polypropylene/polyurethane blends, lycra, natural or synthetic fabrics laminated or coated with waterproofing materials such as rubber, polyvinyl chloride (PVC), polyurethane, silicone elastomer, fluoropolymers, wax, and the like, or formed out of a GORTEX material.
(45) The support cover 140 further includes a closeable flap attachment 141 that when open provides a central compartment 142 in the support cover 140. In an example, the central compartment 142 may be configurable to place a person's legs therein, personal articles therein for access therethrough by the person as the person is supported on the device, and to permit access to personal items such as a backpack enclosure, suitcase, sack and travel bag, and to permit access to power cords attached to remote power sources for powering the person's electronic devices.
(46) As best shown in
(47) As a ballistic shield, cover 140 would be specifically designed to protect against handgun, long gun, and shotgun projectile threats, most types of stabbing or cutting-type weaponry, and hand-thrown or launched projectiles such as rocks and arrows. In use, the shooter would simply prop the device 100 on its side, providing up to 6+ feet in length and at least 2.5 feet in height protection, with shooting lanes provided through center compartment 142, along a side, or through additional viewing apertures provide in cover 140.
(48) The materials of the ballistic shield would be in compliance with specific government ballistic protection levels, such as those promulgated by the United States National Institute of Justice (NIJ) ballistic materials test protocol NIJ-Std-0108.01, for example. Suitable materials for support cover 140 as a ballistic or waterproof shield include but are not limited to armor materials used in one or more wearable or shield products manufactured of KEVLAR, TWARON by AKZO, HONEYWELL ballistic armoring products such as SPECTRA SHIELD, GOLD FLEX, and GOLD SHIELD, DYNEEMA fibers made from Ultra High Molecular Weight Polyethylene (UHMWPE), from DSM DYNEEMA, and the like.
(49) Still further, many multi-purpose uses for support device 100 are envisioned. In its expanded open state, these include but are not limited to one or more of a support surface for supporting items or equipment thereon, a screen backing for viewing video, a foldable display device electrically or wirelessly connected to a computing device, a foldable solar array, a bed for pets or children, a bridge for portaging, a photography backdrop, an outdoor object tossing gaming device and a ladder for climbing.
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(51) The hinge assembly 120 is contained within the support bar collar 107 and slider collar 131, and includes a first dowel 121 extending transverse through a distal end of the support bar collar 107, with outer surface of the support bar collar 107 having a curved or beveled surface 124. Hinge assembly 120 also includes a second dowel 122 extending transverse through a distal end of the slider collar 131, an outer surface having a curved or beveled surface 124 as well. A metal or hard plastic linking element 125 attaches the first and second dowels 121, 122 together. Observing the dotted arrows in
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(54) User 175 then lifts the frame 102 up vertically from end 104 (
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(57) The example embodiments having been described, it is apparent that such have many varied applications. For example, the example embodiments may be applicable but not limited to connection to various devices, structures and articles.
(58) The present invention, in its various embodiments, configurations, and aspects, includes components, systems and/or apparatuses substantially as depicted and described herein, including various embodiments, sub-combinations, and subsets thereof. Those of skill in the art will understand how to make and use the present invention after understanding the present disclosure. The present invention, in its various embodiments, configurations, and aspects, includes providing devices in the absence of items not depicted and/or described herein or in various embodiments, configurations, or aspects hereof, including in the absence of such items as may have been used in previous devices, e.g., for improving performance, achieving ease and\or reducing cost of implementation.
(59) The foregoing discussion of the invention has been presented for purposes of illustration and description. The foregoing is not intended to limit the invention to the form or forms disclosed herein. In the foregoing Detailed Description for example, various features of the invention are grouped together in one or more embodiments, configurations, or aspects for the purpose of streamlining the disclosure. The features of the embodiments, configurations, or aspects of the invention may be combined in alternate embodiments, configurations, or aspects other than those discussed above. This method of disclosure is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment, configuration, or aspect. Thus, the following claims are hereby incorporated into this Detailed Description, with each claim standing on its own as a separate preferred embodiment of the invention.
(60) Moreover, though the description of the invention has included description of one or more embodiments, configurations, or aspects and certain variations and modifications, other variations, combinations, and modifications are within the scope of the invention, e.g., as may be within the skill and knowledge of those in the art, after understanding the present disclosure. It is intended to obtain rights which include alternative embodiments, configurations, or aspects to the extent permitted, including alternate, interchangeable and/or equivalent structures to those claimed, whether or not such alternate, interchangeable and/or equivalent structures disclosed herein, and without intending to publicly dedicate any patentable subject matter.
(61) While exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the invention. Additionally, the features of various implementing embodiments may be combined to form further embodiments of the invention.