TENSIONING DEVICE

Abstract

A tensioning device is designed to reduce the size of an opening on an underlying device or garment. The tensioning device includes a knob, a spool to receive a tensioning element, and a housing having an annular wall extending from a base configured to receive the spool. The tensioning device includes the first locking profile designed to interlock with a second locking profile of the tensioning device for restricting rotation of the knob relative to the housing and maintaining tension in the tensioning element under load.

Claims

1. A tensioning device comprising: a knob configured to adjust tension of a tensioning element, the knob including at least a first tab and a second tab; a spool for winding a portion of the tensioning element about a first rotational axis; and a housing configured to receive the spool and connected with the knob, the housing including an annular wall extending upward from a base and further including a set of teeth defining a first locking profile; wherein the at least first tab and second tab of the knob are configured to displace the spool about the first rotational axis; and wherein the first locking profile is configured to interlock with at least one second locking profile of the tensioning device and arranged to prevent rotation of the knob relative to the housing and further arranged to maintain tension in the tensioning element under load.

2. The tensioning device of claim 1, further comprising a ratchet configured to incrementally adjust rotation of the spool about the first rotational axis, the ratchet including one or more levers connected by at least one resilient member, wherein each lever comprises one or more prongs defining the at least one second locking profile arranged to interlock with the set of teeth and a shoulder arranged to engage with the at least first tab and second tab.

3. The tensioning device of claim 2, wherein the knob further includes at least a first elongated groove and a second elongated groove configured to engage with at least a first shaft and a second shaft of the spool arranged to incrementally shift the prongs between the set of teeth in a first direction about the first rotational axis.

4. The tensioning device of claim 3, wherein the at least first shaft and second shaft are formed on an upper portion of the spool and are further formed offset and parallel to the first rotational axis.

5. The tensioning device of claim 4, wherein the at least first tab and second tab are configured to engage with the shoulders of the ratchet for rotating the levers about the at least first shaft and second shaft of the spool to incrementally shift the prongs between teeth in a second direction about the first rotational axis.

6. The tensioning device of any one of claim 1, wherein the teeth are radially formed along the annular wall.

7. The tensioning device of claim 2, wherein the at least one resilient member is curvilinearly formed, and wherein material stiffness of the at least one resilient member controls a force threshold required to displace the one or more prongs between teeth.

8. The tensioning device of any one of claim 1, further comprising a range limiting member configured to permit rotation of the spool about the first rotation axis and restrict rotation of the spool in an opposite direction about the first rotation axis, the range limiting member including an arm arranged within a cavity of the spool and configured to engage with a gutter of the housing to restrict rotation of the spool in the opposite direction.

9. A tensioning device comprising: a knob configured to adjust tension of a tensioning element, the knob including at least a first tab and a second tab; a spool for winding a portion of the tensioning element about a first rotational axis; a housing configured to receive the spool and connected with the knob, the housing including an annular wall extending upward from a base and further including a set of teeth defining a first locking profile; and a ratchet for incrementally adjusting rotation of the spool about the first rotational axis, the ratchet being positioned between the knob and the spool; wherein the at least a first tab and a second tab of the knob are configured to displace the spool about the first rotational axis; and wherein the first locking profile is configured to interlock with at least one second locking profile of the tensioning device and arranged to prevent rotation of the knob relative to the housing and further arranged to maintain tension in the tensioning element under load.

10. The tensioning device of claim 9, wherein the ratchet includes one or more levers connected by at least one resilient member.

11. The tensioning device of claim 10, wherein each lever of the one or more levers comprises one or more prongs defining the at least one second locking profile arranged to interlock with the set of teeth and further comprises a shoulder arranged to engage with the at least first tab and second tab.

12. The tensioning device of claim 11, wherein each of the at least first tab and second tab are configured to engage with shoulders of the ratchet and rotate the one or more levers about at least first shaft and second shaft of the spool to incrementally shift the one or more prongs between teeth in a second direction about the first rotational axis.

13. The tensioning device of claim 12, wherein the knob further includes at least a first elongated groove and a second elongated groove configured to engage with the at least a first shaft and a second shaft of the spool and further configured to incrementally shift the one or more prongs between the set of teeth in a first direction about the first rotational axis.

14. The tensioning device of claim 13, wherein the at least a first elongated groove and a second elongated groove form a space for the shoulders to freely move without touching the at least first tab and second tab of the knob when tightening the tensioning device.

15. The tensioning device of claim 10, wherein the at least one resilient member is formed between a prong-end of a first lever and a shoulder-end of a second lever of the one or more levers.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawing figures are not necessarily drawn to scale but instead are drawn to provide a better understanding of the components thereof. They are not intended to be limiting in scope but to provide exemplary illustrations. The figures illustrate exemplary configurations of a tensioning device and in no way limit the structures or configurations according to the present disclosure.

[0015] FIG. 1 is a perspective view of an exemplary tensioning device disposed on a prosthetic system.

[0016] FIG. 2 is a perspective view of an exemplary tensioning device.

[0017] FIG. 3 is a top view of the exemplary tensioning device of FIG. 2.

[0018] FIG. 4 is a front view of the exemplary tensioning device of FIG. 2.

[0019] FIG. 5 is a side cross-sectional view of the exemplary tensioning device of FIG. 2.

[0020] FIG. 6 is a bottom perspective view of a top cross-section of the exemplary tensioning device of FIG. 2.

[0021] FIGS. 7A-7C are plan views of exemplary locking profiles.

[0022] FIG. 8 is a bottom perspective view of the exemplary tensioning device of FIG. 2.

[0023] FIG. 9 is a perspective view of a housing of an exemplary tensioning device.

[0024] FIG. 10 is a bottom view of an actuation member of an exemplary tensioning device.

[0025] FIG. 11 is a perspective view of an exemplary tensioning device.

[0026] FIG. 12 is a perspective view of an exemplary tensioning device.

[0027] FIG. 13 is a perspective view of an exemplary tensioning device.

[0028] FIG. 14 is a side view of the exemplary tensioning device of FIG. 13.

[0029] FIG. 15A is a sectional view of an exemplary tensioning device.

[0030] FIG. 15B is a disassembled perspective view of an embodiment of the exemplary tensioning device of FIG. 15A.

[0031] FIG. 16A is a sectional view of an exemplary tensioning device.

[0032] FIG. 16B is a disassembled perspective view of the exemplary tensioning device of FIG. 16A.

[0033] FIG. 17A is a perspective view of an exemplary tensioning device disposed on a wearable article.

[0034] FIG. 17B is a sectional perspective view of the exemplary tensioning device of FIG. 17A.

[0035] FIG. 17C is a top view of a bottom cross-section of the exemplary tensioning device of FIG. 17A from above.

[0036] FIG. 17D is a disassembled perspective view of an embodiment of the exemplary tensioning device of FIG. 17A.

[0037] FIG. 17E is an exploded view of an embodiment of the exemplary tensioning device of FIG. 17A further equipped with a range limiting member.

[0038] FIG. 17F is a disassembled perspective view of the spool and range limiting member of FIG. 17C.

[0039] FIG. 17G is a bottom view of a top cross-section of the exemplary tensioning device of FIG. 17E from below.

[0040] FIGS. 17H-17I are top views of the exemplary tensioning device of FIG. 17C without the knob to show the path of the tensioning element from the range limiting member to outside the tensioning device.

[0041] FIG. 17J is a side cross-sectional view of the exemplary tensioning device of FIG. 17A.

[0042] FIG. 18A is a perspective view of an exemplary tensioning device shown with a transparent knob.

[0043] FIG. 18B is a disassembled perspective view of the exemplary tensioning device of FIG. 18A.

[0044] FIG. 18C is a perspective view of an embodiment of exemplary tensioning device of FIG. 18A shown with a transparent knob.

[0045] FIG. 19A is a top view of a bottom cross-section of an exemplary tensioning device from above.

[0046] FIGS. 19B-19C are disassembled perspective views of the exemplary tensioning device of FIG. 19A.

[0047] FIG. 20 is a top perspective view of an embodiment of the exemplary tensioning device of FIG. 19A shown without the knob.

DEFINITIONS

[0048] The term tensioning resistance may refer to the tension that the tensioning device resists from the tensioning element before unwinding it. It may also refer to the maximum force the tensioning device exerts against a user during winding.

[0049] The tensioning element may refer to a cable, cord, lace, wire, fiber, or other elongated element capable of being wound and unwound from a spool. A spool has its ordinary meaning as preferably a cylindrical device upon which a tensioning element may be wound. A knob is an attachment that can be used to articulate or actuate the spool for winding and unwinding the tensioning element.

[0050] The term clockwise direction may refer to a direction the knob may rotate relative to the housing when viewing the knob from above (see FIG. 3). The term counter-clockwise direction may refer to a direction opposite the clockwise direction.

[0051] The term underlying device may refer to a device to which the tensioning device may be attached. The underlying device may be a device or garment, such as a prosthetic device, a shoe or boot, sports equipment, protective equipment (e.g., a helmet), industrial equipment, outdoor equipment, clothing apparel (such as a coat), or another underlying device.

[0052] The term interlock may refer to a relationship in which two interlocked components do not rotate relative to one another along one or more axes.

DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS

[0053] A better understanding of different embodiments of the disclosure may be had from the following description read with the accompanying drawings in which like reference characters refer to like elements. While the disclosure is susceptible to various modifications and alternative constructions, certain illustrative embodiments are in the drawings and are described below. It should be understood, however, that there is no intention to limit the disclosure to the embodiments disclosed; but on the contrary, the intention covers all modifications, alternative constructions, combinations, and equivalents falling within the spirit and scope of the disclosure.

[0054] Disclosed are embodiments of a tensioning device that may be used to close or narrow an opening. The tensioning device may be disposed of or incorporated into an underlying device, such as an orthopedic or prosthetic device or system. Exemplary patents incorporating a tensioning device may be found in U.S. Pat. No. 9,125,730, granted 8 Sep. 2015; U.S. Pat. No. 10,543,112, granted 28 Jan. 2020; U.S. Pat. No. 10,765,180, granted 8 Sep. 2020; U.S. Pat. No. 11,234,850, granted 1 Feb. 2022; U.S. Pat. No. 11,529,250, granted on 20 Dec. 2022; U.S. Pat. No. 11,253,384, granted on 22 Feb. 2022; each of the aforementioned exemplary patents is incorporated herein by reference.

[0055] The tensioning device disclosed herein has the benefit of a simplified design compared to other devices in the prior art. Such a simplified design may decrease the complexity of the manufacturing process, with fewer parts being needed to manufacture and assemble the device. The simplified design may also involve fewer moving parts and connections between parts, which may increase the durability of the device. The tensioning device may also be modular, such that the tensioning device may be easily removed and replaced in instances of damage or malfunction.

[0056] FIG. 1 shows a tensioning device 100 disposed on a component or shell of an orthopedic device, as in U.S. Pat. No. 11,253,384. For example, the tensioning device 100 can be disposed on a component and configured, in combination with the tensioning element, to secure the component to a limb of a user by tightening the tensioning element secured to one or more points on the component to bring portions of the orthopedic in proximity with the limb of the user.

[0057] The tensioning device 100 may be used in other applications, such as to secure footwear (e.g., tighten shoelaces or wiring), sports equipment (e.g., protective gear such as helmets or shoulder pads), protective equipment, or other garments to the user. Indeed, the tensioning device is not limited to being used in an orthopedic or prosthetic device and may be used in any device to open, close, tighten, or loosen one component relative to another object or other component.

[0058] FIGS. 2-4 illustrate the tensioning device 100. The tensioning device 100 may comprise a knob or actuation member 102 configured to adjust the tension of a tensioning element 154 (seen in FIGS. 9-12) and a housing 104 configured to receive the actuation member 102. The actuation member 102 may comprise a spool 106 onto which a portion of the tensioning element 154 is wound and a knob 114 attached to the spool 106 configured to be rotated by a user to wind the tensioning element 154 onto the spool 106. The tensioning element 154 is a cable or line anchored to and wound about the spool 106, and one skilled in the art will understand that said tensioning element 154 can be used in all embodiments of the present disclosure and is shown in the exemplary figures.

[0059] The housing 104 may comprise a generally horizontally extending base 126 and an annular wall 130 extending upward from base 126. The annular wall 130 may define an interior space 134 having a closed end at the base 126 and an open end opposite the base 126. The interior space 134 may be configured to receive the spool 106 of the actuation member 102 and the tensioning element 154 onto which it is wound, with the annular wall 130 providing a rounded surface within which the spool 106 of the actuation member 102 may rotate. The annular wall 130 may further comprise a first aperture 140 to provide access between the interior space 134 and the exterior surface 132 of the annular wall 130.

[0060] The actuation member 102 and the housing 104 may be formed from the same or similar materials. The actuation member 102 and the housing 104 may be formed from a plastic, a metallic (e.g., brass, aluminum, or steel), or a composite material. For example, the actuation member 102 and the housing 104 may comprise acetal polyoxymethylene, glass-filled nylon materials, or other materials. The actuation member 102 and housing 104 may be formed as a result of an additive manufacturing process or an injection molding process.

[0061] The tensioning element 154 may comprise an elongated flexible member and may be formed of a material with a high modulus of elasticity and a high tensile strength or any other suitable material. The tensioning element 154 may comprise a polymeric (e.g., nylon or other plastics) or metallic material. For example, the tensioning element 154 may comprise high-modulus polyethylene fibers or steel wire. In some embodiments, the tensioning element 154 may comprise a braided material. In some embodiments, the tensioning element 154 may comprise a molded monofilament polymer. The diameter and shape of the tensioning element may also vary depending on the application. For example, the transverse cross-sectional shape may be circular, triangular, square, oval, etc. In some embodiments, the tensioning element 154 may comprise a strap having a greater width than thickness. In some embodiments, the tensioning device 100 may be configured to wind multiple tensioning elements 154.

[0062] FIG. 5 shows a cross-sectional view of the tensioning device 100 that more clearly illustrates the interior space 134 formed by the annular walls 130 of the housing 104. A cross-section of the actuation member 102 is shown, the actuation member 102 comprising the knob 114 and the spool 106. The spool 106 may comprise a winding portion 170 for receiving a portion of the tensioning element 154, an upper flange 172, and a lower flange 174, the upper and lower flanges 172, 174 extending radially outward from the upper and lower ends, respectively, or the winding portion 170 of the spool 106 and configured to direct the tensioning element 154 onto winding portion 170. The winding portion 170 and upper and lower flanges 172, 174 of the spool 106 may comprise rounded surfaces to direct the tensioning element 154 towards the middle of the spool 106 during winding of the tensioning device 100.

[0063] The knob 114 may be generally disc-like in form, such that the knob 114 has a generally circular profile when viewed from above. The knob 114 may comprise other profiles, such as a polygonal (e.g., triangular, square, pentagonal, or hexagonal profile) or oblong profile. The knob 114 may be configured to be gripped and rotated by a user. The knob 114 may comprise a textured surface 120 to facilitate gripping of the knob 114 by the user.

[0064] As illustrated, the textured surface 120 of the knob 114 may comprise a plurality of recesses 108 disposed radially about the edge portion 119 of the knob 114. Each recess 108 may comprise a cutout having a circular or other shape to enable the knob 114 to be easily gripped by the user. In some embodiments, the textured surface 120 of the knob 114 may comprise a knurled or scalloped surface or may comprise a plurality of protrusions (e.g., bumps) extending from the surface of the knob 114 that may provide a user with a tactile feel and facilitate gripping of the knob 114. In other embodiments, the knob 114 may not have a textured surface 120 but may comprise a smooth surface.

[0065] The lower end of the knob 114 may be connected to the upper end of the spool 106, such that rotation of the knob 114 by a user is transmitted to rotate the spool 106. As shown, the spool 106 and knob 114 may be integrally formed, such that the spool 106 and knob 114 form a single piece. In other embodiments, the spool 106 and the knob 114 may comprise multiple distinct components. This may be done to facilitate manufacturing of the actuation member 102. In such instances, the upper end of the spool 106 may be bonded or otherwise connected to the knob 114.

[0066] The tensioning element 154 may be connected to the tensioning device 100 by threading the first end of the tensioning element 154 through the aperture 140 into the interior space 134 of the housing 104. The first end of the tensioning element 154 may then be fixed to the winding portion 170 of the spool 106 or other portion of the actuation member 102. In some embodiments, the first end of the tensioning element 154, after being threaded through aperture 140, may be threaded through a second aperture 121. The first end of the tensioning element 154 may then be attached to the upper surface 117 of the knob 114 or otherwise prevented from returning through the second aperture 121.

[0067] For example, the first end of the tensioning element 154 may be bonded to the upper surface 117 of the knob 114. In other embodiments, a fitting (e.g., a crimped bead) may be attached to the first end of the tensioning element 154 to prevent the first end of the tensioning element from returning through the second aperture 121. In some embodiments, a knot may be formed in the first end of the tensioning element 154 to perform the same function as the fitting.

[0068] The above methods of fixing the first end of the tensioning element 154 to the upper surface 117 of the knob 114 may beneficially enable the user to cut or shorten the first end of the tensioning element 154 according to the needs of the user and then configure the first end of the tensioning element 154 to prevent the first end of the tensioning element 154 to pass through the second aperture 121, to enable the length of the tensioning element 154 to be quickly and/or easily adjusted.

[0069] The second end of the tensioning element 154 may be threaded through one or more guides (e.g., loops) disposed on a side opposite the opening from the side on which the tensioning device 100 is located. The second end of the tensioning element 154 may then be attached to the underlying device, such that as the tensioning device 100 is actuated (by rotating the knob 114), the tensioning element 154 is tightened to shorten the length of the tensioning element 154 between the second end of the tensioning element 154 and the tensioning device 100. In some embodiments, the second end of the tensioning element 154 may be fixed to the housing 104 of the tensioning device 100, such as at an additional aperture or fixture configured to receive the second end of the tensioning device 100.

[0070] In other embodiments, the second end of the tensioning element 154 may be fixed to the actuation member 102, as will be described more fully below. In this manner, the tensioning device 100 may be provided as a modular component that may be fixed or secured (e.g., sewn) to the underlying device. This may enable the tensioning device 100 to be easily replaced in case of damage or malfunction.

[0071] The housing 104 may comprise a rounded boss 142 protruding from the base 126 into the interior space 134 configured to interface with the actuation member 102. The spool 106 may comprise a recess 112 configured to receive the boss 142, and the spool 106 is configured to rotate about the boss 142. The rounded boss 142 may preferably extend through the center of the interior space 134 to center the spool 106 within the interior space 134.

[0072] The actuation member 102 and housing may interface at a lower surface 116 of the knob 114 and an upper surface 136 of the annular wall 130. The lower surface 116 of the knob 114 may comprise a first locking profile 118 configured to interlock with a second locking profile 138 of the upper surface 136 of the annular wall, such that the tension imparted to the tensioning element 154 when turning the knob 114 is maintained as the first locking profile 118 pushes against the second locking profile 138. In this manner, the first and second locking profiles 118, 138 prevent rotation of the actuation member 102 relative to the housing 104 in a direction that loosens the tensioning element 154.

[0073] A user may choose a first direction to rotate the knob 114either a clockwise direction CW or a counter-clockwise direction CCW when viewed from above, as seen in FIG. 3to tighten the tensioning element 154. In the embodiment illustrated in FIGS. 2-5, a user may beneficially select the first direction to be in the clockwise direction CW as the tensioning element 154 may be more easily wound onto the spool 106 as a result of the aperture 140 extending from the exterior surface 132 of the annular wall 130 to the interior space 134 in a generally clockwise direction. However, the tensioning element 154 may be optionally wound in the counter-clockwise direction CCW. The tensioning element 154 may be more easily wound in the clockwise direction CW or the counter-clockwise direction CCW depending on the location of the aperture 140 on the exterior surface 132 of annular wall 130.

[0074] The first and second locking profiles 118, 138 may be configured to resist tension from the tensioning element 154 exerted on the actuation member 102 and to prevent the tensioning element 154 from unwinding the tensioning device 100. However, the first and second locking profiles 118, 138 may be configured such that a force in the clockwise CW or counter-clockwise CCW directions greater than that of the tension in the tensioning element 154 (e.g., from the hand of a user) may rotate the knob 114, allowing a user to actuate the tensioning device 100. The first and second locking profiles 118, 138 may be tailored depending on the tensioning element 154 used with the tensioning device 100.

[0075] During rotation of the knob 114 by the user, the actuation member 102 may separate from the housing 104, either as a result of the shape of the first and second locking profiles 118, 138 or to facilitate winding of the tensioning device 100. This may create a gap between the lower surface 116 of the knob 114 and the upper surface 136 of the annular wall 130. The knob 114 may be formed such that the edge portion 119 of the knob 114 extends over the first and second locking profiles 118, 138 to prevent debris from entering the interior space 134 of the tensioning device 100 through the first and second locking profiles 118, 138. The edge portion 119 may also beneficially prevent debris from catching between the first and second locking profiles 118, 138 to prevent effective interlocking of the tensioning device 100 or prevent increased wear of the first and second locking profiles 118, 138. The height H of the edge portion 119 of the knob 114 may be sufficient to cover the first and second locking profiles 118, 138 during the maximum separation of the actuation member 102 from the housing 104 during operation of the tensioning device 100.

[0076] FIG. 6 shows a top cross-sectional view of the tensioning device 100 viewed along plane A-A and more clearly illustrates the first and second locking profiles 118, 138 of the tensioning device 100. The first locking profile 118 may have a complementary shape to the second locking profile 138, such that when the tensioning device 100 is not actuated by the user a minimal or no gap is formed between the first and second locking profiles 118, 138, thereby maximizing the surface contact between the first and second locking profiles 118, 138 to increase the tension resistance of the tensioning device 100. In other embodiments, the shape of the first locking profile 118 may not complement that of the second locking profile 138, such that a gap may be formed and the surface contact between the first and second locking profiles 118, 138 is not maximized and decreasing the tension resistance of the device 100. The amount of surface contact along the first and second locking profiles 118, 138 may be tailored to adjust the tension resistance of the tensioning device 100 according to the user's needs.

[0077] The first and second locking profiles 118, 138 may comprise teeth 160, the teeth 160 of the housing 104 being configured to interlock with teeth 160 of the knob 114. The tensioning resistance of the tensioning device 100 may depend on the number of teeth 160 disposed over the first and second locking profiles 118, 138. The first or second locking profiles 118, 138 may individually or in combination comprise a range of four to thirty teeth, six to twenty teeth, eight to fifteen teeth, ten to twelve teeth, or a range having any two of the preceding as endpoints.

[0078] FIGS. 7A-7C illustrate exemplary plan views of a portion of the second locking profile 138 extended over a plane, wherein a skilled person would understand that the shape of the first locking profile 118 may complement the second locking profiles 138a, 138b, 138c illustrated. Concerning FIG. 7A, each of the teeth 160a may comprise a first angled surface 164a and a second angled surface 166a that meet at an apex 168a of each of the teeth 160a. The first angled surface 164a may be set at a first angle A1 measured relative to the circumference C of the annular wall 130, and the second angled surface 166a may be set at a second angle A2 measured relative to the circumference C of the annular wall 130.

[0079] As the knob 114 is rotated in a direction from the first angled surface 164a to the second angled surface 166a, the knob 114 is lifted by sliding up the incline of the first angled surface 164a until the lower-most portion of the knob 114 meets the apex 168a, increasing the size of the gap between the first and second locking profiles 118, 138, from which point as the knob 114 continues to be rotated the knob descends along the incline of the second angled surface 166a, reducing the size of the gap. A similar increase and decrease in the gap size may occur when the knob 114 is rotated in the opposite direction, as described above.

[0080] The tensioning resistance of the tensioning device 100 may depend on the magnitude of the first and second angles A1, A2. The magnitude of the first and second angles A1, A2 may be in a range of approximately above zero to approximately 60 degrees, or approximately 10 degrees to approximately 50 degrees, or approximately 15 degrees to approximately 45 degrees, or approximately 20 degrees to approximately 40 degrees, or may be approximately 30 degrees, or may be in a range with any two of the preceding as endpoints. As shown in FIG. 7A, the first and second angles A1, A2 of the first and second angled surfaces 164a, 166a may be approximately equal, such that the tensioning resistance is approximately equal in both the clockwise CW and counter-clockwise directions, the first angled surface 164a extending along the annular wall 130 and having a first width W1a approximately equal to the second width W2a of the second angled surface 166a.

[0081] FIG. 7B illustrates another embodiment of the second locking profile 138b wherein the first angled surface 164b of each of the teeth 160b has a first angle A1 smaller than the second angle A2 of the second angled surface 166b and such that the width W1b of the first angled surface 164b is greater than the width W2b of the second angled surface 166b. Because the first angle A1 is smaller than the second angle A2, the second locking profile will have a tensioning resistance smaller in a first direction from the first angled surface 164b to the second angled surface 166b than in a second direction opposite the first direction (i.e., from the second angled surface 166b to the first angled surface 164b). This configuration may aid a user in tightening the tensioning device 100 in the first direction while retaining greater tensioning resistance in the second direction. The tensioning resistance of the tensioning device 100 in a first direction compared to the second direction may be at a 1.5:1 ratio, a 2:1 ratio, a 3:1 ratio, a 5:1 ratio, a 10:1 ratio, or at a ratio within a range of any of the preceding as endpoints.

[0082] FIG. 7C illustrates an additional embodiment of the second locking profile 138c, wherein the second angle A2 of the second angled surface 166c of each of the teeth 160c is oriented at a perpendicular or near perpendicular angle to the circumference C, the second angled surface 166c extending in a generally direct manner from the annular wall 130 towards the knob 114. Such a locking profile 138c may maximally increase the tensioning resistance of the tensioning device 100 in the second direction (i.e., from the second angled surface 166c towards the first angled surface 164c) while enabling the rotation of the knob 114 in the first direction (i.e., from the first angled surface 164c towards the second angled surface 166c). In this embodiment of the second locking profile 138c, the knob may not be rotated in the second direction unless the first locking profile 118 of the knob is elevated above the second locking profile 138c.

[0083] In some embodiments, the first locking profile 118 may comprise one or more pawls configured to interlock with the teeth 160 of the second locking profile 138. The pawls may be configured to prevent the knob 114 from rotating in a direction to decrease the tension of the tensioning element 154 while the pawls contact the teeth 160 of the second locking profile 138. The tensioning device 100 may comprise a release mechanism configured to elevate the first locking profile 118 above the second locking profile 138 (and thus lifting the whole of the actuation member 102), such that the first and second locking profiles are not interlocked and enabling the user to freely increase the size of the opening or pull on the tensioning element 154 to unwind the tensioning device 100, enabling quick release of the tensioning element 154.

[0084] In one embodiment, the release mechanism may comprise a lever pivotably attached to the housing 104 and configured to lift the lower end 110 of the spool 106. In other embodiments, the release mechanism may comprise a mechanism wherein the knob 114 is raised relative to the spool 106. For example, the connection between the knob 114 and the spool 106 may comprise a push spring, wherein when a user may push down on the knob 114 to actuate the push spring and thereby lift the knob 114 to an elevated position relative to the spool 106.

[0085] In another example, the connection between the knob 114 and the spool 106 may be adjustable, such that the knob 114 may be lifted relative to the spool 106. The exterior surface 132 of the annular wall 130 may comprise a visual indicator to signal to the user that the knob 114 is in an elevated position. The knob 114 may cover the visual indicator when the knob is in a depressed position and may uncover the visual indicator when lifted to the elevated position. The visual indicator may be a different color from the exterior surface 132 of the annular wall 130.

[0086] In some embodiments, the tensioning device 100 may comprise a biasing mechanism (e.g., see elastic element 420 or spring element 421 in FIGS. 15A-15B) to bias the actuation member 102 towards the housing 104 to maintain the spool 106 of the actuation member 102 in the interior space 134. The biasing mechanism may comprise a spring disposed between the spool 106 and the housing 104. For example, the lower flange 174 of the spool 106 may be configured to extend radially outward into a groove formed on the interior surface of the annular wall 130. The spring may be disposed of in the groove between the lower flange 174 and the upper surface of the groove.

[0087] In another embodiment, the biasing mechanism may comprise the tensioning element 154, the second end of the tensioning element 154 being connected to the actuation member 102. Returning to FIG. 5, rounded boss 142 may comprise a third aperture 144 extending from the upper surface 146 of the rounded boss 142 to a lower portion 128 of the base 126. The second end of the tensioning element 154 may then be threaded through the third aperture 144 and attached to the knob 114 of the actuation member 102, wherein the second end of the tensioning element 154 may be bonded or otherwise fixed to the lower surface 123 of the knob 114.

[0088] In some embodiments, the knob 114 may comprise a fourth aperture 122 extending from the upper surface 117 to the lower surface 123 of the knob 114, providing the upper surface 117 of the knob 114 access to the recess 112 of the spool 106. The second end of the tensioning element 154 may pass from the third aperture 144 through the fourth aperture 122 to the upper surface 117 of the knob 114. The second end of the tensioning element 154 may then be fixed to the upper surface 117 of the knob 114 or may be formed into a knot or attached to a fitting to prevent the second end of the tensioning element 154 from returning through the fourth aperture 122. Thus, as the tensioning element 154 is tightened, the tension of the tensioning element 154 may be used to pull the actuation member 102 towards the housing 104. In this manner, the simplicity of design is maintained (as configuring the tensioning element 154 for use as the biasing mechanism removes the need for introducing additional components to serve as the biasing mechanism) and maintains or increases the modularity of the tensioning device 100.

[0089] The tensioning device 100 may further comprise a securement mechanism 124 (as seen in FIGS. 9 and 11) configured to secure the second end of the tensioning element 154 to the knob 114. The securement mechanism 124 may enable the tensioning element 154 to rotate relative to the knob 114 during use of the tensioning device 100. For example, the securement mechanism 124 may be attached to the tensioning element 154 and configured to rotate within the fourth aperture 122 of the knob 114.

[0090] FIG. 8 illustrates that the tensioning device 100 may comprise a channel 148 configured to accommodate the tensioning element 154 when the second end of the tensioning element 154 is attached to the actuation member 102. The channel 148 may comprise a groove or conduit extending from the lower surface 127 into the lower portion 128 of the base 126. The channel 148 may connect the third aperture 144 of the boss 142 (as seen in FIG. 5) to a fifth aperture 150 (see FIG. 4) formed in the annular wall 130 and the base 126 and, which may give the channel 148 access to the exterior surface 132 of the annular wall 130. In some embodiments, the channel 148 may be formed within the lower portion 128 of the base, such that the channel 148 is only open at the third aperture 144 of the boss 142 and the fifth aperture 150.

[0091] A portion of the tensioning element 154 extending between the first and fifth apertures 140, 150 may then be extended across an opening of the underlying device. The tensioning element 154 may be threaded around protrusions or through guides extending from or attached to the underlying device to facilitate imparting tension from the tensioning element 154 to portions of the underlying device to reduce the opening size in the underlying device. As the tensioning device 100 is rotated to increase the tension of the tensioning element 154, portions of the underlying device may be pulled together to decrease the size of the opening. In this manner, the modularity of the tensioning device 100 is increased, with the first and second ends of the tensioning element 154 being attached to the tensioning device 100. Thus, in cases where the tensioning device 100 becomes damaged or jammed, the tensioning device 100 may be more easily removed and replaced.

[0092] An extending portion 156 may extend from the exterior surface 132 of the annular wall 130. The extending portion 156 may facilitate gripping of the tensioning element 154 by a user when the tensioning element 154 has been drawn tight against the housing 104 or to prevent the tensioning element 154 from forming bends with too tight a curve. That is, the extending portion 156 may prevent the tensioning element 154 from catching on the openings of the first and fifth apertures 140, 150 which may hinder the tensioning element 154 from being wound by the tensioning device 100. A protrusion 158 may also extend from the base 126 to provide a similar function as the extending portion 156.

[0093] FIGS. 9-12 show a tensioning device 200, including the tensioning element 154. The tensioning device 200 may be similar in many respects to tensioning device 100 described above, wherein like reference numbers indicate components having the same or similar features. The tensioning device 200 may include many or all of the same components as tensioning device 100, including an actuation member 102 having a knob 114 and a spool 106, a lower surface of the actuation member comprising a first locking profile 118. FIG. 10 shows a bottom view of the actuation member 102, which clearly illustrates the recess 112 and fourth aperture 122 extending through the actuation member 102. FIG. 10 also illustrates that the teeth 160 may comprise a textured surface to increase the frictional forces that may be imparted between the teeth 160, thus increasing the tension resistance of the device 200.

[0094] The tensioning device 200 may also comprise a housing 204 having a base 226. The base 226 may comprise one or more apertures 276 extending from the upper surface 229 to the lower surface 227 of the base. The apertures 276 may be connected to the first and fifth apertures 240, 250. One or more apertures 276 may secure the tensioning device 200 to an underlying device or garment. For example, the tensioning device 200 may be sewn or attached to an underlying device. In some embodiments, the base 126 may be attached directly to the underlying device. For example, the base 126 may be bonded to the underlying device with an adhesive or fixed to the underlying device with one or more fixation members. In some embodiments, the base 126 may be inserted into a recess of the underlying device configured to receive the tensioning device 100, 200.

[0095] FIGS. 13 and 14 show another embodiment of a tensioning device 300. The tensioning device 300 may be similar to tensioning devices 100 and 200 described above. The tensioning device 300 may include a housing 304 and an actuation member 302 configured to wind a tensioning element 354 about a spool (not shown). The actuation member 302 may comprise a knob 314 to enable the user to selectively actuate the tensioning device 300. The housing 304 may comprise a base 326 and a first annular wall 330 extending upward therefrom. A first aperture 341 is formed in the annular wall 330, thereby providing access between the interior space and an exterior surface of the annular wall 330.

[0096] The tensioning device 300 may further comprise an intermediate member 340 disposed between the actuation member 302 and the first annular wall 330 of the housing 304. The intermediate member 340 may comprise a second annular wall, with open upper and lower ends 342, 344. The intermediate member 340 may comprise a third locking profile 350 disposed on at the upper end 342 of the intermediate member 340 and a fourth locking profile 352 disposed on the lower end 344 of the intermediate member 340.

[0097] The third locking profile 350 may be configured to interlock with the first locking profile 318 of the actuation member 302 and the fourth locking profile 352 may be configured to interlock with the second locking profile 338 of the housing 304. This interlocking configuration may prevent unintentional actuation of the tensioning device 300 by the user. The spool may be connected to the intermediate member 340, such that the spool is not directly attached to the knob 314 and does not form a part of the actuation member 302.

[0098] The first, second, third, and fourth locking profiles 318, 338, 350, 352 may be configured such that, when the intermediate member 340 is engaged with the housing 304 and the actuation member 302 is engaged with the intermediate member 340, rotation of the actuation member 302 in a first direction (e.g., in a clockwise CW or counter-clockwise CCW direction) adjusts the tension of the tensioning element 354 (i.e., by winding or unwinding the tensioning element 354 on the spool) and rotation of the actuation member 302 in a second direction opposite the first direction does not adjust the tension of the tensioning element 354. The first and third locking profiles 318, 338 may be configured such that when the actuation member 302 and intermediate member 340 are engaged (i.e., are in contact) along the first and third locking profiles 318, 350, the actuation member 340 may rotate in only one direction relative the intermediate member 340. Similarly, the second and fourth locking profiles 338, 352 may be configured so that the intermediate member 340 is capable of rotation relative to the housing 304 in only one direction when the intermediate member 340 is engaged with the housing 304.

[0099] As shown in the embodiment of FIGS. 13 and 14, the capability of the tensioning device 300 may be enabled by the interaction of teeth 360a, 360b, 360c, 360d included on the first, second, third and fourth locking profiles 318, 338, 350, 352, similar to teeth 160, 160a, 160b, 160c described above. The teeth 360a, 360b, 360c, 360d may each include a first angled surface 364a, 364b, 364c, 364d and a second angle surface 366a, 366b, 366c, 366d. Concerning the first and third locking profiles 318, 350, the first angled surface 364a of the first locking profile 318 and the second angled surface 366c of the third locking profile 350 may be oriented perpendicular to the circumference C of the annular wall 330 (or the circumference of the intermediate member 340), such that the first angled surface 364a and the second angled surface 366c may extend directly towards each other.

[0100] As illustrated, the angled surfaces 364a, 366c may interface to prevent the actuation member 302 from rotating in a clockwise direction CW (when viewed from above), although the orientation of the first and third locking profiles 318, 350 may be configured in a mirrored orientation to prevent rotation in a counter-clockwise direction CCW. The second angled surface 366a of the first locking profile 318 and the first angled surface 364c of the third locking profile 338 may be oriented at an oblique angle relative to the circumference C of the annular wall 330 or the circumference of the intermediate member 340. The inclined surfaces of the second and first angled surfaces 366a, 364c facilitate sliding of the actuation member 302 relative to the intermediate member 340 along the first and third locking profiles 318, 338.

[0101] In this manner, the actuation member 302 may rotate or slide relative to the intermediate member 340, in a direction from the first angled surface 364c to the second angled surface 366c (with the actuation member 302 being similarly rotatable or slidable in an opposite direction in instances in which the teeth 360a, 360c of the first and third locking profiles 318, 338 are in a mirrored configuration).

[0102] The second and fourth locking profiles 338, 352 may comprise a similar orientation as the first and third locking profiles 318, 338, the second and fourth locking profiles 338, 352 including teeth 360b, 360d with first angled surfaces 364b, 364d and second angled surfaces 366b, 366d configured to interlock with one another. However, the teeth 360b, 360d of the second and fourth locking profiles 338, 352 may have a generally mirrored orientation to that of the first and third locking profiles 318, 350. That is, the second and fourth locking profiles may be configured to adjust the tension of the tensioning element 354 when the fourth locking profile 352 of the intermediate member 340 rotates or slides relative to the second locking profile 338 of the housing 304 in a second direction opposite the first direction.

[0103] For example, the fourth locking profile 352 may mirror the third locking profile 350 with respect to a circumference of the intermediate member 340 and the second locking profile 338 may be configured to complement the fourth locking profile 352. Specifically, the second and fourth locking profiles 338, 352 may comprise teeth 360b, 360d, with each of the teeth comprising a first angled surface 364b, 364d, and a second angled surface 366b, 366d, respectively. Each of the first angled surfaces 364b of the second locking profile 338 and the second angled surfaces 366d of the fourth locking profile 352 may be oriented at a generally perpendicular angle relative to the circumference C of the annular wall 330 or intermediate member 340. The second angled surfaces 366b of the second locking profile 338 and the first angled surfaces 364d of the fourth locking profile 352 may be set at an oblique angle relative to the circumference C of the annular wall 330 or intermediate member 340. As illustrated, the intermediate member 340 may rotate or slide along the annular wall 330 of the housing 304 in a direction from the second angled surfaces 366b to the first angled surfaces 364b-a direction opposite that of the first and third locking profiles 318, 350 disposed above. The skilled person will also understand that the orientation may be mirrored in other embodiments to enable the rotation of the intermediate member 340 in the opposite direction.

[0104] In this manner, when the actuation member 302 is engaged with the intermediate member 340, actuation member 302 may rotate in a first direction relative to the intermediate member 340 and may not rotate in a second direction opposite to the first direction relative to the intermediate member 340. Additionally, when the intermediate member 340 is engaged with the housing 304 and the actuation member 302, the intermediate member 340 may rotate in the second direction relative to the housing 304 and may not rotate in the first direction relative to the housing 304. When a user attempts to rotate the actuation member 302 in the second direction, the first and second angled surfaces 364a, 366c interface to push against one another, preventing the actuation member 302 from rotating relative to the intermediate member 340 and rotating the intermediate member 340 relative to the housing 304 in tightening the tensioning element 354.

[0105] In some embodiments, the tensioning device 300 may be configured to enable tightening of the tensioning element 354 and may prevent loosening of the tensioning element 354 when the intermediate member 340 is engaged with both the actuation member 302 and the housing 304. In these embodiments, the tensioning element 354 may be loosened or unwound by disengaging the intermediate member 340 from the housing 304. Disengagement of the intermediate member 340 from the housing 304 may be performed by lifting the actuation member 302 upward (via the knob 314) or otherwise elevating the actuation member 302 and intermediate member 340 upward (e.g., through a release mechanism similar to those described above).

[0106] The tensioning device 300 may comprise a biasing mechanism configured to bias the actuation member 302 and the intermediate member 340 toward the housing. For example, the biasing mechanism may comprise the tensioning element 354 (as illustrated), in which the second end 356 of the tensioning element 354 may be attached to the actuation member 302 (e.g., via a securement mechanism 324), similar to the biasing mechanism of tensioning device 100 described above. In instances in which the spool is connected to the intermediate member 340, a fitting 325 may be attached to a portion 358 of the tensioning element 354 near the second end 356 of the tensioning element 354 below the spool. As the actuation member 302 is lifted, the second end 356, the portion 358 of the tensioning element 354, and the fitting 325 attached thereto are also lifted. The fitting 325 may have a width greater than the diameter of the aperture extending through the spool, such that as the fitting 325 is lifted into contact with the spool the fitting 325 does not pass through the aperture of the spool through which the tensioning element 354 is threaded. As the fitting 325 comes into contact with a lower surface of the spool, the spool and intermediate member 340 are also lifted upwards and enabling the intermediate member 340 to rotate freely relative to the housing 304. The tensioning element 354 may then be unwound from the spool (e.g., by pulling on the tensioning element 354 disposed outside the tensioning device 300). In other embodiments, the intermediate member 340 and spool may be lifted upwards by a release mechanism, such as a spring or lever, similar to the tensioning device 100 described above.

[0107] The size of the angle between the first angled surface 364c and the circumference C of the annular wall 330 may differ from the size of the angle between the second angled surface 366d and the circumference C. For example, the angle between the second angled surface 366d and the circumference C may be smaller than the angle between the first angled surface 364c and the circumference C. This configuration of the first and second angled surfaces 364c, 366d enables the intermediate member 340 to rotate more easily in the second direction relative to the housing 304 in tightening the tensioning element 354 compared to rotation of the actuation member 302 in the first direction relative to the intermediate member 340. The width and/or number of teeth 360a, 360c disposed on the first and third locking profiles 318, 350 may also differ from the width and/or number of teeth 360b, 360d disposed on the second and fourth locking profiles 338, 352.

[0108] FIGS. 15A-15B show another embodiment of a tensioning device 400. The tensioning device 400 includes a knob 402 coupled to a housing 404. The knob 402 is an actuation mechanism configured to wind a tensioning element about a spool 406 that is disposed within the housing 404, wherein the housing 404 includes at least one opening 432 to receive and/or dispense a tensioning element. Rotation of the knob 402 displaces the spool 406 about the first rotational axis R1.

[0109] The housing 404 also includes an annular wall 430 extending upward from a base 428 to receive the spool 406. In an embodiment, the housing 404 includes a first locking profile 416. The first locking profile 416 is configured to interlock with a second locking profile 418 of the tensioning device 400, like the locking profiles of tensioning device 100, to prevent rotation of the knob 402 relative to the housing 404 and maintain tension in the tensioning element under load. The second locking profile 418 can be formed with the spool 406 or the knob 402. The second locking profile 418 is preferably a complement of the first locking profile 416. In an embodiment, the first locking profile 416 and the second locking profile 418 are axially arranged about the first rotational axis R1.

[0110] The tensioning device 400 further comprises an elastic element 420 that is disposed between the knob 402 and the upper portion 408 of the spool 406. The elastic element 420 is arranged to bias the spool 406 against the housing 404 in a direction that is parallel to the first rotational axis R1. In particular, the elastic element 420 forces that locking profile 416 of the spool 406, which is formed along a lower portion 410 of the spool 406, against the locking profile 418 of the housing 404. The locking profile 416 of the spool 406 is coaxially formed along the edge of the lower portion 410 and is configured to fit and interlock with the locking profile 418 of the housing 404. The locking profile 418 of the housing 404 is coaxially formed against the annular wall 430 of the housing 404 and along a base 428 of the housing. The locking profiles 416, 418 may be configured and designed as the locking profiles 118, 138 depicted in FIGS. 5-7C.

[0111] In an embodiment, the knob 402 includes at least one tab 412 that is configured to engage with one or more projections 414 formed on an upper portion of the spool 406, thereby permitting rotation about the main or first rotational axis R1. The spool 406 comprises a radial groove 422 about which the tensioning element can be wound. The spool 406 further comprises a channel 424 through which a boss 426 of the housing 404 extends to hold the spool 406 within the housing 404 and to support rotation of the spool 406 about the first rotational axis R1. By rotating the knob 402 about the first rotational axis R1 to wind the tensioning element, the one or more tabs 412 push against the one or more projections 414 to rotate the spool 406 about the first rotational axis R1. Simultaneously, the locking profiles 416, 418 axially shift the spool 406 in a direction (i.e., up or down) parallel to the first rotational axis R1, wherein the elastic element 420 is configured to force the locking profile 416 of the spool 406 to remain engaged with the locking profile 418 of the housing. In an embodiment, the elastic element 420 is a slotted disc spring, finger spring, or wave spring. As depicted in FIG. 15B, the tensioning device 400 may include a biasing element, e.g., a linear or coil spring 421, as the elastic element. In an alternative embodiment, the elastic element 420 is formed as part of the knob 402.

[0112] FIGS. 16A-16B illustrate sectional and perspective views of a tensioning device 500. Similar to the tensioning device 100 as depicted in FIG. 5, the tensioning device 500 provides a simplified solution for winding a tensioning element 501 about a first rotational axis R1. The tensioning device 500 is a self-locking friction dial comprising a knob 502 and a housing 504. Advantageously, the knob 502 is integrated, or monolithically formed, with the spool 506 and is devoid of a locking profile. Rather, the tensioning device 500 operates by the rotational friction created by the tensioning element 501 between the knob 502 and the housing 504. Such a solution simplifies the manufacturing process and is highly customizable to the desired level of tension of the tensioning element 501. In other words, the tensioning device 500 provides the tensioning element 501 with a continuous tension instead of a discrete, interrupted tension level provided by an incremental rotation of the knob with respect to the housing between locking profiles.

[0113] The knob 502 is formed as one piece with the spool 506. The upper portion 508 of the spool 506 is connected to the knob 502. A channel 524 is formed through the lower portion 510, and upper portion 508, of the spool 506 and is configured to receive a boss 526 of the housing 504. The spool 506 includes a radial groove 522 about which the tensioning element 501 is wound. In an embodiment, the knob 502 includes a textured surface 520 to assist users in rotational manipulation of the knob 502 about the first rotational axis R1. In an embodiment, the knob 502 includes an aperture 512 to receive the tensioning element 501.

[0114] The spool 506 of the knob 502 is positioned within an interior space 528 of the housing 504 and abuts the annular wall 530 of the housing 504. In an embodiment, the housing includes at least one opening 532, 534 to receive and dispense the tensioning element 501. In an embodiment, the tensioning device 500 includes an intermediate attachment member 536 configured to create an intermediate point of tension between ends of the tensioning element 501. The intermediate attachment member 536 includes a conduit 538 to guide and support the tensioning element. In an embodiment, the intermediate attachment member 536 is connected to a strap 540, or other similar element used to fasten, secure, or carry an object, wherein rotation of the knob 502 adjusts the tensioning element 501 to vary the distance between the housing 504 and the intermediate attachment member 536, thereby tightening or loosening the strap 540.

[0115] FIGS. 17A-17C illustrate perspective and cross-sectional views of a tensioning device 600 integrated with an article 603, e.g., a wearable device. The tensioning device 600 includes a knob 602 coupled to a housing 604. The knob 602 is an actuation mechanism configured to wind a tensioning element 601 about a spool 606 that is disposed within the housing 604, wherein the housing 604 includes at least one opening 632, 634 to receive and/or dispense the tensioning element 601. In an embodiment, the tensioning device 600 include a flange 605 to connect with the article 603 and may further include one or more fasteners 611 to secure the tensioning device 600 to the article 603. The tensioning element 601 can extend from the tensioning device 600 through one or more conduits 615 of the article 603 to distribute the tension of the tensioning element 601 about the article 603 when tightening and loosening the article 603 against the user.

[0116] The housing 604 is configured to receive the spool 606 and connect with the knob 602. The housing 604 includes an annular wall 630 extending upward from a base 628 and also includes a set of teeth 631 defining a first locking profile 633. Like the locking profiles of the tensioning device 100, the first locking profile 633 is configured to interlock with at least one second locking profile 635 of the tensioning device 600 to prevent rotation of the knob 602 relative to the housing 604 and maintain tension in the tensioning element 601 under load.

[0117] In an embodiment, the tensioning device 600 includes a ratchet 607 configured to incrementally permit rotation of the spool 606 about a first rotational axis R1 to wind and unwind the tensioning element 601. The ratchet 607 includes at least two levers 610, such as a first lever 610a and a second lever 610b, wherein each lever 610 comprises, on one end, one or more prongs 620 to interlock with the housing 604 and, on the other end, a shoulder 622 to interface with the knob 602. The one or more prongs 620 define the at least one second locking profile 635 of the tensioning device. Each lever 610 further comprises a slot 618 formed between the prongs 620 and the shoulder 622, wherein the slot 618 is configured to receive or interface with a shaft 614 formed on an upper portion 608 of the spool 606. The spool 606 preferably includes at least a first shaft 614a and a second shaft 614b, though one skilled in the art will understand that one or more shafts 614 are contemplated. The levers 610 are connected to one another by at least one resilient member 616, such as a first resilient member 616a and a second resilient member 616b, that acts as a spring and biases the prongs 620 against teeth 631 of the housing 604. The at least one resilient member 616 can be curvilinearly formed between a prong-end of one lever 610 and a shoulder-end of another lever 610. In an embodiment, each lever 610 includes a concavity 617 about the slot 618 to provide a lower profile of the tensioning device 600 and additional space for the manipulating the elongated groove 613 about the shaft 614.

[0118] The knob 602 includes at least one tab 612, or set of tabs including a first tab 612a and a second tab 612b, configured to drive against the shoulder 622, when rotating in a first direction about the first rotational axis R1, to incrementally disengage the ratchet 607 from the housing 604. The knob 602 also includes at least one elongated groove 613, such as a first elongated groove 613a and a second elongated groove 613b, to interface with at least one shaft 614 of the spool 606. When rotating in a second direction, which is opposite the first direction, about the first rotational axis R1, the groove 613 of the knob 602 is forced against the shaft 614 of the spool 606 to give slack and release the tensioning element 601. While the slots 618 are formed to directly encircle and receive the shafts 614 of the spool 606, the grooves 613 are elongated or oversized to allow displacement of the shafts 614 with respect to the knob 602. As observed in FIG. 17A, the knob 602 is transparent to show the interface between the shafts 614 of the spool 606 and the grooves 613 of the knob 602. In an embodiment, the spool 606 can comprise an axial channel arranged for positioning the spool on an axial boss of the housing 604.

[0119] In an embodiment, when tightening the tensioning device 600, the shafts 614 on the spool 606 interact with the elongated grooves 613 of the knob 602 and rotate both the spool 606 and the ratchet 607. The grooves 613 are elongated to give space for the shoulders 622 to move freely without touching the tabs 612 of the knob 602 when tightening the tensioning device 600, e.g., turning it clockwise. In other words, the elongated grooves 613 allow the ratchet 607 to disengage from the housing 604. Each lever 610 of the ratchet 607 rotates around its own axis or second rotational axis R2 and flips the prongs 620 over the corresponding teeth 631 of the housing 604. The second rotational axis R2 is coaxial with the shaft 614 of the spool 606. The shaft 614 is offset from the first rotational axis R1, and the second rotational axis R2 is parallel with first rotational axis R1. Each lever 610 of the ratchet 607 is arranged to rotate about a corresponding shaft 614 of the spool 606.

[0120] In an embodiment, when tightening the tensioning device 600, the knob 602 is rotated clockwise with respect to the housing 604. The stiffness of the at least one resilient member 616 determines the force needed to displace the prongs 620 between teeth 631. In other words, the material stiffness controls a force threshold required to displace the one or more prongs 620 between teeth 631. The teeth 631 are disposed along the annular wall 630 of the housing 604. The annular wall 630 extends upward from a base 628 to form an interior space of the housing 604. In an embodiment, the interfacing surfaces of each prong 620 correspond (i.e., are parallel) to the angled side of each tooth of the set of teeth 631 of the housing 604. When loosening the tensioning device 600, the prongs 620 disengage the teeth 631 by rotation of the levers 610 about the shafts 614, wherein the knob 602 is rotated counterclockwise and the tabs 612 push against the shoulders 622 to disengage the prongs 620. Additionally, the grooves 613 of the knob 602 are prevented from engaging the shafts 614 of the spool 606 when turning the knob 602 counterclockwise.

[0121] In an embodiment, the housing 604 includes a boss 626 about which the spool 606 can be disposed to guide rotation of the tensioning element 601 about the rotational axis R1. While FIG. 17C illustrates a boss 626, e.g., being coaxial with the first rotational axis R1, FIG. 17D illustrates the housing 604 can be formed without a boss 626.

[0122] FIGS. 17E-17J illustrate perspective views of tensioning device 600 further comprising a range limiting member 636. The spool 606 comprises an axial channel 627 configured to receive the range limiting member 636. The range limiting member 636 comprises an arm 642 that is displaceable within a cavity 638. The arm 642 is configured to engage with a gutter 640 of the housing 604 to limit rotation of the spool 606 with respect to the housing 604.

[0123] FIG. 17F illustrates a deconstructed, perspective view of the tensioning element 601, spool 606, and range limiting member 636. The tensioning element 601 is secured within a pocket 644 of the range limiting member 636 and extends through a channel 646 of the range limiting member 636 into the radial groove 624 of the spool 606. The tensioning element 601 can be wound about the radial groove 624 of the spool 606 via rotation of the knob 602. From the radial groove 624 of the spool 606, the tensioning element 601 extends through an opening 632 of the housing 604 to outside the tensioning device 600. In an embodiment, the rotational axis of the range limiting member 636 is offset from the first rotational axis R1 of the tensioning device 600.

[0124] FIG. 17G illustrates a sectional view of the tensioning device 600 from below. From this perspective, the arm 642 of the range limiting member 636 is engaged with the gutter 640 to restrict rotation of the spool 606 in a clockwise direction. Rotation of the spool 606 via the knob 602 in the counterclockwise direction will displace the arm 642 toward a curb 648 of the cavity 638 formed on the lower portion 609 of the spool 606. FIGS. 17H and 17I illustrate the path of the tensioning element 601 from the range limiting member 636, through the spool 606, and beyond the housing 604 through an opening 632. An opposing end of the tensioning element 601 can also be secured to the housing 604 through another opening 634.

[0125] The arm 642 is engaged with the gutter 640 of the housing 604 in FIG. 17H, which restricts rotation of the spool 606, whereas the arm 642 of the range limiting member 636 abuts the curb 648 of the cavity 638 in FIG. 17I, which permits rotation of the spool 606. In other words, FIG. 17H shows the tensioning device 600 in a locked position when the arm 642 is engaged with the gutter 640. The spool 606 is also empty of tensioning element 601, i.e., the spool 606 is or unwound to a maximum position, which necessitates the range limiting member 636 to be engaged or locked. In this position, the spool 606 rotation is restricted in a counterclockwise direction. FIG. 17I shows the tensioning device 600 in starting an initial revolution. The spool 606 has been rotated approximately 40-45 degrees clockwise, compared to FIG. 17H, wherein the arm 642 abuts the curb 648 and is forced into a closed/disengaged position by the tension in the tensioning element 601. FIG. 17J illustrates a sectional view of an embodiment of the tensioning device 600 having both a boss 626 being coaxial with the first rotational axis R1 and a range limiting member 636 offset from the first rotational axis R1.

[0126] FIGS. 18A-18C illustrate perspective views of a tensioning device 700. The tensioning device 700 includes a knob 702 coupled to a housing 704. The knob 702 is an actuation mechanism configured to wind a tensioning element about a spool 706 that is disposed within the housing 704, wherein the housing 704 includes at least one opening 732, 734 to receive and/or dispense a tensioning element. The tensioning device 700 includes a ratchet 707 configured to incrementally permit rotation of the spool 706 about a first rotational axis R1 to wind and unwind the tensioning element.

[0127] In an embodiment, the ratchet 707 includes a single lever 710. The lever 710 comprises, on one end, a tip 720 to interlock with the housing 704 and, on the other end, a shoulder 722 to interface with the knob 702. The shoulder 722 is curved to freely pass over or slide next to the teeth 731 of the annular wall 730 of the housing 704. The annular wall 730 extends upward from a base 728 of the housing 704. The lever 710 comprises an eyelet 718 proximal to the shoulder 722. The eyelet 718 is configured to engage with a shaft 714 of the spool 706. The shaft 714 is formed on an upper portion 708 of the spool 706. The stiffness of the lever 710 determines the force needed to displace the tip 720 between teeth 731.

[0128] The knob 702 includes at least one tab 712 configured to drive against the shoulder 722, when rotating in a first direction about the first rotational axis R1, to incrementally disengage the ratchet 707 from the housing 704. The lever 710 of the ratchet 707 rotates around its own axis, or second rotational axis R2, and flips the tip 720 over the corresponding teeth 731 of the housing 704. The second rotational axis R2 is coaxial with the respective shaft 714 of the spool 606. The shaft 714 is offset from the first rotational axis R1, and the second rotational axis R2 is parallel with the first rotational axis R1.

[0129] FIG. 18C illustrates a perspective view of the tensioning device 700, wherein the ratchet 707 includes oblique segments 724 on opposing sides of the lever 710 and extending between the tip 720 and the shoulder 722. The stiffness of the oblique segments 724 determines the force needed to displace the tip 720 between teeth 731.

[0130] FIGS. 19A-19C illustrate plan and perspective views of a tensioning device 800 comprising a ratchet 807 for incremental rotation about a first rotational axis R1. The tensioning device 800 includes a knob 802 coupled to a housing 804. The knob 802 is an actuation mechanism configured to wind a tensioning element about a spool 806 that is disposed within the housing 804. The knob 802 includes at least three tabs 812 configured to drive rotation of the spool 806 and ratchet 807 about the first rotational axis R1. In an embodiment, the knob 802 includes snap fit lips to lock the knob 802 onto the housing 804, wherein the knob 802 is provided with arcuate openings to make the snap fit edges draftable for manufacturing.

[0131] The housing 804 may include chamfered edges to guide the snap lock lips of the knob 802. The housing 804 includes at least one opening 832, 834 to receive and/or dispense a tensioning element. The housing 804 further includes teeth 831 formed along the annular wall 830, the teeth 831 being configured to engage with the ratchet 807 to allow for incremental rotation of the spool 806 about a first rotational axis R1 to wind and unwind the tensioning element. The housing 804 includes a boss 826 to receive the spool 806 and the ratchet 807, wherein the spool 806 includes a channel 824 and the ratchet 807 includes an eyelet 818 through which the boss 826 extends to secure the spool 806 and the ratchet 807 within the interior space of the housing 804. The housing 804 may include a shell hook lip for connecting with another device (i.e., brace, splint, support). The housing 804 may also include a ranger limiter cord end lock through which the tensioning element may be fed through and tied off e.g., with a stopper or a knot.

[0132] The teeth 831 of the housing 804 define a first locking profile 833, wherein the first locking profile 833 is configured to interlock with at least one second locking profile 835 of the tensioning device 800 to prevent rotation of the knob 802 relative to the housing 804 and maintain tension in the tensioning element 154 under load.

[0133] The spool 806 includes an upper portion 808 against which the ratchet 807 is arranged. A cavity 809 is formed in the upper portion 808 of the spool 806, the cavity 809 being configured to lock the knob 802 and the spool 806 together. The cavity 809 and the channel 824 are coaxial with the first rotational axis R1. In an embodiment, the spool 806 includes a lace lock 836, wherein an end of the tensioning element is locked by folding against itself in the relatively small space. The spool 806 may further comprise a radial cavity, formed beneath the upper portion 808, to receive the tensioning element, and a lower cavity, formed above a lower portion of the spool and below the radial cavity, to receive a range limiter cord.

[0134] The ratchet includes at least three arms 814 that radially extend from the eyelet 818. One skilled in the art will recognize that the number of arms 814 and tabs 812 may vary, i.e., the tensioning device 800 may include two or more than three arms and tabs. Each arm 814 includes an orifice 822 to receive a lever 810. The lever 810 includes, on one end, a protrusion 821 to engage with the orifice 822 and, on the other end, prongs 820 to engage with the teeth 831 of the annular wall 830. The annular wall 830 extends upwards from a base 828 of the housing 804. The ratchet 807 further includes resilient members 816, e.g., formed as spring blades, that are configured to bias the levers 810, particularly the prongs 820, against the teeth 831 of the housing 804. The prongs 820 defining the at least one second locking profile 835 to interlock with the set of teeth 831.

[0135] In an embodiment, when tightening the tensioning device 800, the tabs 812 on the knob 802 push against the arms 814 of the ratchet 807 while the resilient members 816 push against the levers 810 to secure engagement towards the teeth 831 and lock the connected spool 806 in one direction. When untightening the tensioning device 800, the tabs 812 push against the levers 810 and disengage the levers 810 from the teeth 831 of the housing 804, wherein the prongs 820 click or jump to the next set of teeth 831 as a result of the released force from the resilient members 816.

[0136] FIG. 20 is a perspective view of the tensioning device 800 having resilient inserts 817 to bias the levers 810 against the housing 804. Rather than the resilient members 816 being formed with or coupled to the ratchet 807, the resilient inserts 817 can be provided to produce a similar biasing effect. The resilient inserts 817 comprise material that can absorb energy when deformed and return to its original shape when the stress is removed. The resilient inserts 817 may be rubber, silicone rubber, nylon, lycra, elastin, and/or specialized polymers like polyurethane.

[0137] In addition to the above, further embodiments and examples include the following:

[0138] 1. A tensioning device (100) configured for use in a prosthetic system, the tensioning device (100) comprising: an actuation member (102) configured to adjust the tension of a tensioning element (154), the actuation member (102) including: a spool (106) for winding a portion of the tensioning element (154); and a knob (114) connected to an upper end of the spool (106), wherein the tensioning device (100) is actuated by rotating the knob (114), and wherein a lower surface (116) of the knob (114) comprises a first locking profile (118); a housing (104) configured to receive the actuation member (102), the housing (104) including: a base (126); an annular wall (130) extending upward from the base (126), the base (126) and annular wall (130) forming an interior space (134), an upper surface (136) of the annular wall (130) comprising a second locking profile (138), a first aperture (140) formed in the annular wall (130) providing access between the interior space (134) and an exterior surface (132) of the annular wall (130); wherein the spool (106) is disposed within the interior space (134) of the housing (104); and wherein the first locking profile (118) is configured to interlock with the second locking profile (138) to prevent rotation of the actuation member (102) relative to the housing (104).

[0139] 2. The tensioning device (100) of example 1, wherein the second locking profile (118) is a complement of the first locking profile (118).

[0140] 3. The tensioning device (100) of example 2, wherein the first and second locking profiles (118, 138) comprise a teeth (160).

[0141] 4. The tensioning device (100) of example 3, wherein the first or second locking profiles (118, 138) comprise a range of four teeth to thirty teeth, six teeth to twenty teeth, eight teeth to fifteen teeth, ten teeth to twelve teeth, or a range having any two of the preceding endpoints.

[0142] 5. The tensioning device (100) of example 3 or 4, wherein each of the teeth (160) of the first and second locking profiles (118, 138) comprise a first angled surface (164a, 164b, 164c) and a second angled surface (166a, 166b, 166c), a first angle (A1) of the first angled surface (164a, 164b, 164c) and a second angle (A2) of the second angled surfaces (166a, 166b, 166c) being measured relative to a circumference (C) of the annular wall (130).

[0143] 6. The tensioning device (100) of example 5, wherein the first angle (A1) between the first angled surface (164a) and the circumference (C) is equal to the second angle (A2) between the second angled surface (166a) and the circumference (C).

[0144] 7. The tensioning device (100) of example 5, wherein the first angle (A1) between the first angled surface (164b, 164c) and the circumference (C) is smaller than the second angle (A2) between the second angled surface (166b, 166c) and the circumference (C).

[0145] 8. The tensioning device (100) of example 5, wherein the second angled surface (166c) is oriented perpendicular to the circumference (C).

[0146] 9. The tensioning device (100) of any one of examples 1 through 8, wherein the knob (114) comprises a second aperture (121) extending from an upper surface (117) of the knob (114) to the interior space (134) of the housing (104).

[0147] 10. The tensioning device (100) of any one of examples 1 through 9, further comprising a biasing mechanism (154, 420, 421) configured to bias the actuation member (102) towards the housing (104).

[0148] 11. The tensioning device (100) of example 10, wherein the biasing mechanism comprises the tensioning element (154).

[0149] 12. The tensioning device (100) of example 11, wherein the biasing mechanism (420, 421) comprises a biasing element (421) connected to the actuation member (102) and the housing (104).

[0150] 13. The tensioning device (100) of example 12, wherein the tensioning element (154) is connected to the biasing element (420, 421).

[0151] 14. The tensioning device (100) of any one of examples 1 through 13, wherein the housing (104) further comprises a rounded boss (142) protruding from the base (126) into the interior space (134) and wherein the spool (106) comprises a recess (112) configured to receive the rounded boss (142).

[0152] 15. The tensioning device (100) of example 14, wherein the rounded boss (142) comprises a third aperture (144) extending from an upper surface (146) of the rounded boss (142) to a lower portion (128) of the base (126) and wherein the knob (114) comprises a fourth aperture (122) extending from an upper surface (117) of the knob (114) to the recess (112) of the spool (106).

[0153] 16. The tensioning device (100) of example 15, further comprising a securement mechanism (124) attached to the knob (114) and configured to secure the tensioning element to the knob (114).

[0154] 17. The tensioning device (100) of example 15 or 16, wherein the base (126) comprises a channel (148) connecting the third aperture (144) of the rounded boss (142) to a fifth aperture (150) formed in the annular wall (130), the channel (148) being formed in a lower portion (128) of the base (126) and configured to receive the tensioning element (154).

[0155] 18. The tensioning device (100) of any one of examples 1 through 17, wherein the spool (106) and knob (114) are integrally formed.

[0156] 19. The tensioning device (100) of any one of examples 1 through 18, wherein the spool (106) and knob (114) are not integrally formed.

[0157] 20. The tensioning device (100) of any one of examples 1 through 19, wherein the knob (114) comprises a textured surface (120).

[0158] 21. The tensioning device (100) of any one of examples 1 through 20, wherein an edge portion (119) of the knob (114) extends over the first and second locking profiles (118), (138) to prevent debris from entering through the first and second locking profiles (118), (138) from outside the tensioning device (100).

[0159] 22. The tensioning device (100) of any one of examples 1 through 21, wherein the tensioning element (154) comprises a metal, plastic, or composite wire.

[0160] 23. A tensioning device (100) configured for use in a prosthetic system, the tensioning device (100) comprising: an actuation member (102) configured to adjust the tension of a tensioning element (154), the actuation member (102) including: a spool (106) for winding a portion of the tensioning element (154); and a knob (114) connected to an upper end of the spool (106), wherein the tensioning device (100) is actuated by rotating the knob (114); a housing (104) configured to receive the actuation member (102), the housing (104) including: a base (126), an annular wall (130) extending upward from the base (126), the base (126) and annular wall (130) forming an interior space (134), a first aperture (140) formed in the annular wall (130) providing access between the interior space (134) and an exterior surface (132) of the annular wall (130); and a biasing mechanism (420, 421) configured to bias the actuation member (102) toward the housing (104).

[0161] 24. The tensioning device (100) of example 23, wherein the biasing mechanism (154) comprises an end of the tensioning element (154) attached to the actuation member (102).

[0162] 25. The tensioning device (100) of example 23, wherein the biasing mechanism (420, 421) comprises a biasing element (421) connected to the actuation member (102) and the housing (104).

[0163] 26. The tensioning device (100) of example 25, wherein the tensioning element (14) is connected to the biasing element (420, 421).

[0164] 27. The tensioning device (100) of any one of examples 24 through 26, wherein the knob (114) comprises a second aperture (121) extending from an upper surface (117) of the knob (114) to the interior space (134) of the housing (104).

[0165] 28. The tensioning device (100) of any one of examples 23 through 27, wherein the housing (104) further comprises a rounded boss (142) protruding from the base (126) into the interior space (134) and wherein the spool (106) comprises a recess (112) configured to receive the rounded boss (142).

[0166] 29. The tensioning device (100) of example 28, wherein the rounded boss (142) comprises a third aperture (144) extending from an upper surface (146) of the rounded boss (142) to a lower portion (128) of the base (126) and wherein the knob (114) comprises a fourth aperture (122) extending from an upper surface (117) of the knob (114) to the recess (112) of the spool (106).

[0167] 30. The tensioning device (100) of example 29, further comprising a securement mechanism (124) attached to the knob (114) and configured to secure the tensioning element to the knob (114).

[0168] 31. The tensioning device (100) of example 29 or 30, wherein the base (126) comprises a channel (148) connecting the third aperture (144) of the rounded boss (142) to a fifth aperture (150) formed in the annular wall (130), the channel (148) being formed in a lower portion (128) of the base (126) and configured to receive the tensioning element.

[0169] 32. The tensioning device (100) of any one of examples 23 through 31, wherein a lower surface (116) of the knob (114) comprises a first locking profile (118) configured to interlock with a second locking profile (138) disposed on an upper surface (136) of the annular wall (130) to prevent rotation of the actuation member (102) relative to the housing (104).

[0170] 33. The tensioning device (100) of example 32, wherein the second locking profile (118) is a complement of the first locking profile (118).

[0171] 34. The tensioning device (100) of example 33, wherein the first and second locking profiles (118), (138) comprise a teeth (160).

[0172] 35. The tensioning device (100) of example 34, wherein the first or second locking profiles (118), (138) comprise a range of four teeth to thirty teeth, six teeth to twenty teeth, eight teeth to fifteen teeth, ten teeth to twelve teeth, or a range having any two of the preceding as endpoints.

[0173] 36. The tensioning device (100) of example 34 or 35, wherein each of the teeth (160) of the first and second locking profiles (118), (138) comprise a first angled surface (164) and a second angled surface (166), a first angle (A1) of the first angled surface (164) and a second angle (A2) of the second angled surfaces (164), (166) being measured relative to a circumference (C) of the annular wall (130).

[0174] 37. The tensioning device (100) of example 36, wherein the first angle (A1) between the first angled surface (164) and the circumference (C) is equal to the second angle (A2) between the second angled surface (166) and the circumference (C).

[0175] 38. The tensioning device (100) of example 36, wherein the first angle (A1) between the first angled surface (164) and the circumference (C) is smaller than the second angle (A2) between the second angled surface (166) and the circumference (C).

[0176] 39. The tensioning device (100) of example 36, wherein the second angled surface (166) is oriented perpendicular to the circumference (C).

[0177] 40. The tensioning device (100) of any one of examples 32 through 39, wherein an edge portion (119) of the knob (114) extends over the first and second locking profiles (118), (138) to prevent debris from entering through the first and second locking profiles (118), (138) from outside the tensioning device (100).

[0178] 41. The tensioning device (100) of any one of examples 23 through 40, wherein the spool (106) and knob (114) are integrally formed.

[0179] 42. The tensioning device (100) of any one of examples 23 through 40, wherein the spool (106) and knob (114) are not integrally formed.

[0180] 43. The tensioning device (100) of any one of examples 23 through 42, wherein the knob (114) comprises a textured surface (120).

[0181] 44. The tensioning device (100) of any one of examples 23 through 43, wherein the tensioning element (154) comprises a metal, plastic, or composite wire.

[0182] 45. A tensioning device (300) configured for use in a prosthetic system, the tensioning device (300) comprising: an actuation member (302) configured to adjust the tension of a tensioning element (354), the actuation member (302) including a knob (314), wherein the tensioning device (300) is actuated by rotating the knob (314) and wherein a lower surface of the actuation member (302) comprises a first locking profile (318); a housing (304) including: a base (326); a first annular wall (330) extending upward from the base (326), the base (326) and annular wall (330) forming an interior space, an upper surface of the annular wall (330) comprising a second locking profile (338), a first aperture (341) formed in the annular wall (330) providing access between the interior space and an exterior surface of the annular wall (330); and an intermediate member configured to interface with the actuation member (302) and the housing (304), the intermediate member (340) comprising a second annular wall and a spool configured for winding a portion of the tensioning element (354), the intermediate member being disposed between the actuation member and the housing, an upper surface of the intermediate member comprising a third locking profile and a lower surface of the intermediate member comprising a fourth locking profile; wherein the spool is disposed within the interior space of the housing (304); and wherein the first locking profile (318) is configured to interlock with the third locking profile (350) to prevent rotation of the actuation member (302) relative to the intermediate member (340); and wherein the second locking profile (338) is configured to interlock with the fourth locking profile (352) to prevent rotation of the intermediate member (340) relative to the housing (304).

[0183] 46. The tensioning device (300) of example 45, wherein when the actuation member (302) is engaged with the intermediate member (340), rotation of the knob (314) in a first direction adjusts the tension of the tensioning element (354) and rotation of the knob (314) in a second direction opposite the first direction does not adjust the tension of the tensioning element (354).

[0184] 47. The tensioning device (300) of example 45 or 46, wherein when the intermediate member (340) is engaged with the actuation member (302) and the housing (304), the actuation member (302) is capable of rotation in only a first direction relative to the intermediate member (340) and the intermediate member (340) is capable of rotation in only a second direction opposite the first direction relative to the housing (304).

[0185] 48. The tensioning device (300) of any one of examples 45 through 47, wherein the third locking profile (350) is a complement of the first locking profile (318).

[0186] 49. The tensioning device (300) of any one of examples 45 through 48, wherein the fourth locking profile (352) is a complement of the second locking profile (338).

[0187] 50. The tensioning device (300) of any one of examples 45 through 49, wherein the fourth locking profile (352) mirrors the third locking profile (350).

[0188] 51. The tensioning device (300) of example 49 or 50, wherein the first, second, third, and fourth locking profiles (318, 338, 350, 352) comprise teeth (360a, 360b, 360c, 360d).

[0189] 52. The tensioning device (300) of example 51, wherein the first, second, third, or fourth locking profiles (318, 338, 350, 352) comprise a range of four teeth (360a, 360b, 360c, 360d) to thirty teeth (360a, 360b, 360c, 360d), six teeth (360a, 360b, 360c, 360d) to twenty teeth (360a, 360b, 360c, 360d), eight teeth to fifteen teeth (360a, 360b, 360c, 360d), ten teeth (360a, 360b, 360c, 360d) to twelve teeth (360a, 360b, 360c, 360d), or a range having any two of the preceding as endpoints.

[0190] 53. The tensioning device (300) of example 51 or 52, wherein each of the teeth (360a, 360b, 360c, 360d) of the first, second, third, and fourth locking profiles (318, 338, 350, 352) comprise a first angled surface (364a, 364b, 364c, 364d) and a second angled surface (366a, 366b, 366c, 366d), the first angled surface (364a, 364b, 364c, 364d) and second angled surface (366a, 366b, 366c, 366d) being measured relative to a circumference (C) of the annular wall (330).

[0191] 54. The tensioning device (300) of example 53, wherein the first angled surfaces of the first and second locking profiles and the second angled surfaces of the third and fourth locking profiles are oriented perpendicular to the circumference (C) of the annular wall (330), wherein the first angled surfaces of the first and second locking profiles are configured to interlock with the second angled surfaces of the third and fourth locking profiles, respectively.

[0192] 55. The tensioning device (300) of any one of examples 45 through 54, wherein the knob (314) comprises a second aperture extending from an upper surface of the knob (314) to the interior space of the housing (304).

[0193] 56. The tensioning device (300) of any one of examples 45 through 55, further comprising a biasing mechanism configured to bias the actuation member (302) towards the housing (304).

[0194] 57. The tensioning device (300) of example 56, wherein the biasing mechanism comprises the tensioning element (354).

[0195] 58. The tensioning device (300) of example 57, further comprising a fitting attached to a portion of tensioning element (354) below the aperture of the spool.

[0196] 59. The tensioning device (300) of any one of examples 45 through 58, wherein the housing (304) further comprises a rounded boss protruding from the base (326) into the interior space and wherein the spool comprises a recess configured to receive the rounded boss.

[0197] 60. The tensioning device (300) of example 59, wherein the rounded boss comprises a third aperture extending from an upper surface of the rounded boss to a lower portion of the base (326) and wherein the knob (314) comprises a fourth aperture extending from an upper surface of the knob (314) to the recess of the spool.

[0198] 61. The tensioning device (300) of example 60, further comprising a securement mechanism (324) attached to the knob (314) and configured to secure the tensioning element to the knob (314).

[0199] 62. The tensioning device (300) of example 60 or 61, wherein the base (326) comprises a channel connecting the third aperture of the rounded boss to a fifth aperture formed in the annular wall (330), the channel being formed in a lower portion of the base (326) and configured to receive the tensioning element (354).

[0200] 63. The tensioning device (300) of any one of examples 45 through 62, wherein the knob (314) comprises a textured surface.

[0201] 64. The tensioning device (300) of any one of examples 45 through 63, wherein an edge portion of the knob (314) extends over the first and third locking profiles (318, 350) and/or the second and fourth locking profiles (338, 352) to prevent debris from entering through the first and third locking profiles (318, 350) and/or the second and fourth locking profiles (338, 352) from outside the tensioning device (300).

[0202] 65. The tensioning device (300) of any one of examples 45 through 64, wherein the tensioning element (354) comprises a metal, plastic, or composite wire.

[0203] 66. A tensioning device (400) comprising: a knob (402) configured to adjust the tension of a tensioning element (154), the knob (402) including a set of projections (414); a spool (406) for winding a portion of the tensioning element (154) about a first rotational axis (R1), the spool (406) comprising a set of projections (414) formed on an upper portion (408) and a first locking profile (416) formed on a lower portion (410); a housing (404) configured to receive the knob (402) and the spool (406), the housing (404) including an annular wall (430) extending upward from a base (428) and further including a second locking profile (418) formed on the base (428) and against the annular wall (430); and an elastic element (420) disposed between the knob (402) and the spool (406) and configured to bias the first locking profile (416) against the second locking profile (418); wherein the first locking profile (416) is configured to interlock with the second locking profile (418) to prevent rotation of the knob (402) relative to the housing (404).

[0204] 67. A tensioning device (500) comprising: a knob (502) configured to adjust the tension of a tensioning element (501); a spool (506) for winding a portion of the tensioning element (501) about a first rotational axis (R1), the spool (506) being monolithically formed with the knob (502); and a housing (504) configured to receive the spool (506); wherein the tensioning device (500) provides a continual, variable level of tension to the tensioning element (501) without interruption from incremental rotation caused by a locking profile.

[0205] 68. A tensioning device (600) comprising: a knob (602) configured to adjust the tension of a tensioning element (154), the knob (602) including a set of tabs (612) and a set of elongated grooves (613); a spool (606) for winding a portion of the tensioning element (154) about a first rotational axis (R1), the spool (606) comprising a set of shafts (614) formed on an upper portion (608), the shafts (614) being offset and formed parallel to the first rotational axis (R1); a housing (604) configured to receive the knob (602) and the spool (606), the housing (604) including an annular wall (630) extending upward from a base (628) and further including a set of teeth (631) formed along the annular wall (630); and a ratchet (607) for incrementally adjusting rotation of the spool (606) about the first rotational axis (R1), the ratchet (607) including a set of levers (610) connected by at least one resilient member (616), wherein each lever (610) comprises prongs (620) to interlock with the teeth (631) and a shoulder (622) to interface with the tabs (612); wherein stiffness of the at least one resilient member (616) determines force needed to displace the prongs (620) between teeth (631); wherein the elongated grooves (613) are configured to engage with the shafts (614) of the spool (606) to allow the prongs (620) to incrementally shift between teeth (631) to lock the tensioning device (600) under tension.

[0206] 69. The tensioning device (600) of example 68, further comprising a range limiting member (636) configured to permit rotation of the spool (606) about the first rotation axis (R1) and restrict rotation of the spool (606) in an opposite direction about the first rotation axis (R1), the range limiting member (636) including an arm (642) arranged within a cavity (638) of the spool (606) and configured to engage with a gutter (640) of the housing (604) to restrict rotation of the spool (606) in the opposite direction.

[0207] 70. A tensioning device (700) comprising: a knob (702) configured to adjust the tension of a tensioning element (154), the knob (702) including a set of tabs (712); a spool (706) for winding a portion of the tensioning element (154) about a first rotational axis (R1), the spool (706) comprising a shaft (714) formed on an upper portion (708), the shaft (714) being offset and formed parallel to the first rotational axis (R1); a housing (704) configured to receive the knob (702) and the spool (706), the housing (704) including an annular wall (730) extending upward from a base (728) and further including a set of teeth (731) formed along the annular wall (730); and a ratchet (707) for incrementally adjusting rotation of the spool (706) about the first rotational axis (R1), the ratchet (707) including a levers (710); wherein the lever (710) comprises a tip (720) to interlock with the teeth (731) and a shoulder (722) having an eyelet (718) through which the shaft (714) is rotatably connected.

[0208] 71. A tensioning device (800) comprising: a knob (802) configured to adjust the tension of a tensioning element (154), the knob (802) including a set of tabs (812); a spool (806) for winding a portion of the tensioning element (154) about a first rotational axis (R1); a housing (804) configured to receive the knob (802) and the spool (806), the housing (804) including an annular wall (830) extending upward from a base (828) and further including a set of teeth (831) formed along the annular wall (830); and a ratchet (807) for incrementally adjusting rotation of the spool (806) about the first rotational axis (R1), the ratchet (807) being positioned between the knob (802) and the spool (806); wherein the ratchet (807) includes a set of arms (814), a set of levers (810) that are rotatably connected to the set of arms (814), and a resilient member (816) configured to bias the set of levers (810) against the teeth (831) of the housing (804).

[0209] Advantageously, the embodiments of the present disclosure provide improved debris resistance, modularity, and/or reduced part count

[0210] It is understood that not all objects or advantages may be achieved under any embodiment of the disclosure. Those skilled in the art will recognize that the tensioning device may be embodied or carried out to achieve or optimize one advantage or group of advantages as taught herein without achieving other objects or advantages as taught or suggested herein.

[0211] The skilled artisan will recognize the interchangeability of various disclosed features. Besides the variations described herein, other known equivalents for each feature can be mixed and matched by one of ordinary skill in this art to build and use the tensioning device under the principles of the present disclosure. The skilled artisan will understand that the features described herein may be adapted to other methods and types of tensioning devices/applications.

[0212] It is intended that the present disclosure should not be limited by the disclosed embodiments described above and may be extended to other applications that may employ the features described herein.