WO2025137006A1 - Roll on strap dispenser - Google Patents

Abstract

Strap dispenser (10) including a frame (110) configured to rest on a surface and a support (130) attached to the frame. The support includes a track (140) that is sized and shaped for loading a strap coil (C) onto the dispenser. The track extends from a receiving end (146), over a crest (147), to a recess (148). The recess is sized and shaped to receive an axle (210) of a hub (200) that holds the strap coil. Further, a surface of the track at the bottom of the recess is positioned at a first height, and the receiving end of the track is positioned at a second height that is lower that the first height.

Description

ROLL ON STRAP DISPENSER

PRIORITY

[0001] This application claims priority to and the benefit of U.S. Provisional Patent Application 63/611,758, filed December 18. 2023, the entire contents of which is incorporated by reference.

FIELD

[0002] The present disclosure relates to a dispenser for a coil of product, and more particularly to a dispenser that may be loaded by rolling a coil of product onto the dispenser.

BACKGROUND

[0003] Lengths of flexible material are often arranged in coils in which the flexible material is wound around a tubular paperboard core. The coils are relatively compact and convenient for storing and transporting the flexible material. When a section of the flexible material is needed, the section is unwound from the coil.

[0004] As an example, plastic, paper, or metal strap used to unitize goods or secure them to a pallet is typically formed into coils and then unwound from the coil and applied to the goods by an operator or an automatic strapping machine. A strap coil may be held on a dispenser that allows the strap to be unwound as needed.

SUMMARY

[0005] Various embodiments of the present disclosure provide a strap dispenser, a hub for holding a strap coil, a system for dispensing strap, and a method of loading a strap coil onto a dispenser. [0006] In one embodiment, a strap dispenser includes a frame configured to rest on a surface and a support attached to the frame. The support includes a track that is sized and shaped for loading the strap coil onto the dispenser. The track extends from a receiving end, over a crest, to a recess. The recess is sized and shaped to receive an axle of a hub that holds the strap coil. Further, a surface of the track at the bottom of the recess is positioned at a first height, and the receiving end of the track is positioned at a second height that is lower that the first height.

[0007] In one embodiment, a system for dispensing a coiled product includes a roll of the coiled product and a dispenser. The roll includes a central hub including an axle and the coiled product surrounding the central hub. The dispenser includes a frame configured to rest on a surface, and a support attached to the frame. The support includes a track that is sized and shaped for loading the coiled product onto the dispenser. The track extends from a receiving end, over a crest, to a recess. The recess cradles the axle of the hub. A surface of the track at the bottom of the recess is positioned above the receiving end of the track such that the strap coil is elevated and rotatable within the recess.

[0008] In one embodiment, a method of loading a strap coil onto a dispenser includes mounting the strap coil onto a hub comprising an axle. The method also includes positioning the strap coil adjacent to the dispenser, where the dispenser comprises a support including a track to guide the axle to a recess. The method includes rolling the strap coil toward the dispenser until the axle is positioned on a receiving end of the track of the support. The method also includes rolling the axle along the track, over a crest of the track, and into the recess such that the strap coil product is elevated and rotatable within the recess. BRIEF DESCRIPTION OF THE FIGURES

[0009] Figure 1 is a perspective view of one example embodiment of a system for dispensing strap from a strap coil according to the disclosure.

[0010] Figure 2 is a perspective view of one example embodiment of a dispenser of the disclosure.

[0011] Figure 3 is a side view of the dispenser of Figure 2.

[0012] Figure 4 is a perspective view of one example embodiment of a hub for a strap coil of the disclosure.

[0013] Figure 5 A is a perspective view of the hub of Figure 3 inserted into a strap coil in a first configuration.

[0014] Figure 5B is a perspective view of the hub of Figure 3 engaging the strap coil in a second configuration.

[0015] Figure 6A is a perspective view of the strap coil and dispenser of the system of Figure 1 in a first position.

[0016] Figure 6B is a perspective view of the roll of coiled product and dispenser of the system of Figure 1 in a second position.

[0017] Figure 6C is a perspective view of the roll of coiled product and dispenser of the system of Figure 1 in a third position.

[0018] Figure 6D is a perspective view of the roll of coiled product and dispenser of the system of Figure 1 in a fourth position.

[0019] Figure 6E is a perspective view of the loaded system of Figure 1. DETAILED DESCRIPTION

[0020] While the systems, devices, and methods described herein may be embodied in various forms, the drawings show and the specification describes certain exemplary and nonlimiting embodiments. Not all of the components shown in the drawings and described in the specification may be required, and certain implementations may include additional, different, or fewer components. Variations in the arrangement and type of the components; the shapes, sizes, and materials of the components; and the manners of connections of the components may be made without departing from the spirit or scope of the claims. Unless otherwise indicated, any directions referred to in the specification reflect the orientations of the components shown in the corresponding drawings and do not limit the scope of the present disclosure. Further, terms that refer to mounting methods, such as mounted, connected, etc., are not intended to be limited to direct mounting methods but should be interpreted broadly to include indirect and operably mounted, connected, and like mounting methods. This specification is intended to be taken as a whole and interpreted in accordance with the principles of the present disclosure and as understood by one of ordinary skill in the art.

[0021] Various embodiments of the present disclosure provide a strap dispenser configured to hold a coil of strap (sometimes called the “strap coil”). To enable prolonged use of the dispenser without repeated removal and replacement of the strap coil, the dispenser is configured to hold strap coils including substantial lengths of strap. The weight of these strap coils can be considerable, making them difficult to manually load onto a dispenser and in certain instances requiring the assistance of a separate lifting device. Accordingly, embodiments of the dispenser of the disclosure include a track that cooperates with a hub inserted into the core of the strap coil to enable the strap coil to be rolled onto the dispenser. [0022] In the example embodiment, the strap is configured for holding objects together, such as a pallet of packaged goods. Such a strap may be formed of steel, paper, or a polymer, such as polyester, polypropylene, or other plastic material.

[0023] Embodiments of the dispenser of the disclosure reduce the time and/or effort it takes a user to replace one strap coil with another.

[0024] Figure 1 shows one example embodiment of a strap dispensing system 10 of the present disclosure and components thereof. The strap dispensing system 10 includes a dispenser 100 that is configured to hold a hub 200. The hub 200 is configured to engage a strap coil C and, particularly, a tubular paperboard core P of the strap coil C around which strap S is wound. The hub 200 is also configured to engage the strap coil C such that the hub 200 is fixed in rotation with the strap coil C. Generally, when a length of strap S is needed, for example to wrap around a pallet of goods, the strap S can be unwound from the strap coil C as the hub 200 rotates. Generally, to facilitate dispensing of the strap S, the dispenser 100 suspends the strap coil C at an elevated height so that the hub 200 may freely rotate as a length of the strap S is unwound from the rest of the strap coil C.

[0025] The dispenser 100 of dispensing system 10 is shown in greater detail in Figures 2 and 3. Dispenser 100 includes a frame 110 and a coil support 130 attached to the frame 110. The frame 110 is configured to rest on an underlying surface, such as the floor, and hold the support 130 at an elevated height away from the floor. The lower end of the frame 110 includes a foot 114 that is configured to make stationary contact with the floor and prevent movement of the frame 110 when it is in use, such as when strap is being dispensed from the coil. In this example embodiment, the frame 110 also includes wheels 120 at the lower end thereof that allow' the dispenser 100 to be mobile. Accordingly, the dispenser 100 can be moved to different locations where the strap is needed. [0026] The frame 110 also includes an upright body 116 formed by a pair of bars that extend upward from the lower end of the dispenser to a handle 118 at the upper end. The handle 118 has a loop configuration that extends from one bar of the upright body 116 to the other. The handle 118 may be angled with respect to the upright body 116, as shown in the illustrated embodiment, or it may be aligned with the upright body 116.

[0027] In the illustrated example embodiment, the foot 114, upright body 116, and handle 118 are formed of a single bent tube 112 to form the various portions of the frame 110. Accordingly, the foot 114 is provided by the opposing ends of the bent tube 112. In other embodiments, the foot 114, upright body 116, and handle 118 has another configuration, such as being formed from separate pieces that are attached to one another. For example, the frame may be an assembly of welded or fastened channels and/or plates. The frame may be formed from metal, plastic, or any other suitable material.

[0028] The support 130 of the dispenser 100 is attached to the frame 110 at an elevated position to hold an axle 210 of the hub 200 at a sufficient height that the strap coil C is above the floor and able rotate without being hindered by contact with the floor. The term "‘height’" as used herein means the distance of components from the underlying surface when the frame is in a standing position with the stationary foot 114 on the surface. While the dispenser 100 may be oriented in other positions, such as being tilted back to allow mobility on the wheels, the height is measured with respect to a plane that is formed at the lower end of the frame 110 by the portions of the dispenser 100 that are configured to contact the underlying surface when the dispenser is standing upright, such as the foot 114 and the wheels 120 in the illustrated example embodiment.

[0029] In the example embodiment, the foot 114 extends forw ard from the upright body

of gravity of the dispenser 100 is in front of the axis of the wheels 120. As a result, the dispenser 100 is in a stable position when the foot 114 is in contact with the floor. Further, the support 130 is configured to hold the strap coil C also in front of the upright body 116 of the frame 110, so that center of gravity' of the loaded dispenser remains in front of the axis of the wheels 120 and the upright body 116 causing the frame 110 to be inclined to pivot forward into a stable position resting on the foot 114.

[0030] While the illustrated embodiment of the frame 110 has a configuration with wheels 120 in the rear and a foot 114 in the front, allowing the frame dispenser 100 to be mobile by rocking the frame 110 back onto the wheel 120, in a manner similar to a hand truck, in other embodiments, the frame has other configurations. For example, in some embodiments, the frame includes other configurations that provide mobility, such as a group of casters at the lower end with one or more brakes, or driven tracks that mobilize the dispenser. Still, in other embodiments, the dispenser does not have a mobile configuration. For example, some embodiments include only stationary feet at the lower end of the frame. Such embodiments may be portable and moved to a desired position when unloaded, or carried by machinery when already loaded.

[0031] The support 130 of the dispenser 100 includes a track 140 that is sized and shaped for loading the strap coil C onto the dispenser 100. To facilitate loading of the strap coil C onto the dispenser 100, as illustrated by FIGS. 6A-6E, the track 140 has a receiving end 146 that extends down toward the bottom of the frame to provide a ramp for the strap coil C. The height of the receiving end 146 of the track is selected such that the axle 210 of the hub 200 engages the track 140 when the strap coil C is rolled on the floor. The track 140 extends from the receiving end 146, over a crest 147, and downward to a recess 148. During loading, once the hub 200 passes over the crest 147, gravity will carry the roll of strap coil C down to the recess 148 where it is held in place. To allow the hub 200 to rotate within the recess 148, the height of the recess 148 is greater than the height of the receiving end 146 of the track 140. Accordingly, the lower receiving end 146 of the track 140 is able to receive an axle 210 of the hub 200 of the roll of strap coil C when the roll of strap coil C is resting on the floor. On the other hand, once the strap coil C has been loaded into the recess 148, it is in an elevated position, which allows the hub to rotate so that the strap coil C can be unwound.

[0032] The recess 148 is sized and shaped to hold the axle 210 of the hub 200 in a particular orientation so that the axle 210 is substantially perpendicular to the axis of the wheels 120 of the frame 110 of the dispenser 100. Accordingly, as forces are applied to the dispensing system 10 in order to draw the strap S off the strap coil C and rotate the hub 200, those forces are substantially perpendicular to the direction of movement of the wheels 120. This helps avoid the potential for the unwinding forces to cause the dispenser 100 to inadvertently move. The phrase “substantially perpendicular,” as used herein, means in a range of 75 to 105 degrees.

[0033] As shown in Figures 2 and 3, the support 130 includes a first arm 132 that forms a first portion 142 of the track 140 and a second arm 134 that forms a second portion of the track 144. Each of the first portion 142 and second portion 144 of the track 140 is sized and shaped to receive a respective end of the axle 210 of the hub 200. An opening is formed between the first arm 132 and the second arm 134 where the strap coil C is able to hang by the axle 210 of the hub 200, thereby allowing the axle 210 to rotate within the recess 148 as the strap S is drawn from the strap coil C. The first and second arms 132. 134 are positioned so that the axle 210 of the hub 200 is horizontal when the dispenser 100 is at rest and the foot 114 is on the floor.

[0034] The first arm 132 is positioned adjacent to upright body 116 of the frame 110 and attached to the frame 110 by a bracket 150. The second arm 134 is spaced from the upright body 116, such that the first arm 132 is between the second arm 134 and the upright body

116. As shown in Figure 1, the loaded strap coil C is positioned between the first arm 132 and the second arm 134. The second arm 134 is held up by a brace 136 that is connected to the first arm 132. Specifically, the second arm 134 is cantilevered from the brace 136. In other words, in the illustrated configuration, the support 130 has a U-shaped configuration with the first arm 132 and second arm 134 forming legs of the U-shape and the brace 136 forming the closed end of the U-shape. As a result, in the example embodiment the strap coil C may be loaded from the side of the support that includes the receiving end 146 of the track 140 and the strap coil C may be slid into the opening between the arms 132, 134.

[0035] To further limit movement of the strap coil C once it has been loaded in the dispenser 100, the support 130 includes a stop 135 adjacent to the recess 148 of the track 140, such that the track 140 has a closed end. Thus, the stop 135 holds the hub 200 within the recess 148 whenever forces are applied to the strap coil C in the direction of the closed end of the track 140. This allows the strap to be unwound from the roll by pulling the strap in the direction of the closed end while limiting the risk that the strap coil C will be removed from the dispenser 100.

[0036] Alternatively, in some embodiments, the track is open on both ends such that the strap coil C can be loaded from either direction. For example, in such embodiments, both ends of the track are receiving ends and crests are provided on either side of the track to contain the hub when it is within a recess toward the middle of the track. To allow access to the opening between the two arms support, the second arm may be connected to the frame by a structure rising up from the foot or by an overhang that extends down from above the open space provided for the strap coil C. [0037] Figure 4 illustrates the hub 200 of the dispensing system 10 in a primed configuration that is ready to engage a strap coil C for loading onto the dispenser 100. The hub 200 includes the axle 210 and a plurality of spokes 220 that extend radially outward from the axle 210. Each of the spokes 220 includes a radial support 228 at its outer end that is configured to support the strap coil C. The spokes 222 also include an adjustable clamping member 222 that is movable between a contracted position, as shown in Figure 5A and an expanded position as shown in Figure 5B. The clamping member 222 has a U-shaped configuration and is configured to extend around the interior and both sides of the coiled product. When the clamping member 222 is in the expanded position, the interior of the clamping member 222 is aligned with the radial support 228.

[0038] To facilitate adjustment of the clamping member 222 between the contracted and expanded positions, each clamping member 222 is secured to the respective spoke 220 within a radial slot 224 (Figure 5B). A fastener 226 is attached to each clamping member 222 and engages the slot 224 of the respective spoke 220. Radial movement of the fastener 226 along the slot allows the clamping member 222 to move inward and outward. The clamping member 222 may then be held in position by tightening the fastener 226.

[0039] The axle 210 of the hub 200 includes a cylindrical body 212 that is configured to roll on the track 140 of the dispenser. Each end of the axle 210 includes a cap 214 that is configured to secure the axle on the track 140. Each cap 214 forms a guide that hinders lateral movement of the hub 200 as it rolls along the track 140. Thus, the distance between the two caps 214 is slightly larger than the distance between respective arms 132, 134 of the support 130, such that the cylindrical body 212 is maintained in engagement with the arms of the track 140. Alternatively, the axle may include guides that are arranged closer together and are configured to sit between the arms of the support 130. [0040] In some embodiments, the axle 210 is configured to slide within in the recess 148 as the strap coil C is rotated. Alternatively, in some embodiments the hub includes bearings or bushings that allow the spokes of the hub to rotate around the axle.

[0041] Figures 6A-6E illustrate the loading of a strap coil onto the dispenser 100. As shown in Figure 6A, the strap coil C begins on the floor near the dispenser 100. The strap coil C is then rolled toward the receiving end 146 of the track 140 until the axle 210 of the hub 200 is engaged with the upper surface of support 130 at the receiving end 146 of the track 140, as shown in Figure 6B. Continuing to roll the strap coil C, as shown in Figures 5C and 5D moves the axle 210 over the crest 147 of the track 140. Gravity can then lower the strap coil C to move the axle 210 of the hub 200 into the recess 148 at the closed end of the track 140, as shown in Figure 6E.

[0042] Thus, in various embodiments, the present disclosure provides a strap dispenser. The dispenser includes a frame configured to rest on a surface and a support attached to the frame. The support includes a track that is sized and shaped for loading the strap coil onto the dispenser. The track extends from a receiving end, over a crest, to a recess. The recess is sized and shaped to receive an axle of a hub that holds the strap coil. Further, a surface of the track at the bottom of the recess is positioned at a first height, and the receiving end of the track is positioned at a second height that is lower that the first height.

[0043] In various embodiments of the dispenser, the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, and the first and second portions of the track are sized and shaped to receive respective first and second ends of the axle of the hub. [0044] In various embodiments of the dispenser, the first arm is adjacent to the frame, the second arm is attached to the first arm by a brace, and the second arm is cantilevered to the brace.

[0045] In various embodiments of the dispenser, the frame includes a foot configured to contact the surface that extends under the support.

[0046] In various embodiments of the dispenser, the frame includes wheels that are rotatable about an axis, and the recess is shaped to hold the axle of the hub in an orientation that is substantially perpendicular to the axis.

[0047] In various embodiments of the dispenser, the recess is disposed at a closed end of the track.

[0048] In various other embodiments, the disclosure provides a hub for holding a strap coil on a dispenser. The hub includes an axle and a plurality of spokes extending radially outward from the axle. Each of the spokes includes an adjustable clamping member configured to secure a portion of the strap coil. Each adjustable clamping member is radially slidable between a contracted position and an expanded position.

[0049] In various embodiments of the hub, each clamping member has a U-shaped configuration.

[0050] In various embodiments of the hub, each spoke includes a radial slot and the respective clamping member is secured to the spoke by a fastener that engages the slot.

[0051] In various embodiments of the hub, each end of the axle includes a cap that serves as a guide to maintain the hub on a track of the dispenser.

[0052] In various other embodiments, the disclosure provides a system for dispensing strap from a strap coil. The system includes a hub including an axle and the strap coil surrounding the hub. The system also includes a dispenser including a frame configured to rest on a surface, and a support attached to the frame. The support includes a track that is sized and shaped for loading the strap coil onto the dispenser. The track extends from a receiving end, over a crest, to a recess. The recess cradles the axle of the hub and a surface of the track at the bottom of the recess is positioned above the receiving end of the track such that the strap coil is elevated and rotatable within the recess.

[0053] In various embodiments of the system, the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, a first end of the axle is received by the first portion of the track and a second end of the axle is received by the second portion of the track.

[0054] In various embodiments of the system, the first and second ends of the axle include respective caps to secure the axle on the track.

[0055] In various embodiments of the system, the first arm is adjacent to the frame, wherein the second arm is attached to the first arm by a brace, and wherein the second arm is cantilevered to the brace.

[0056] In various embodiments of the system, the frame includes wheels that are rotatable about an axis, and wherein the axle of the roll of coiled product is substantially perpendicular to the axis.

[0057] In various embodiments of the system, the hub includes a plurality⁷ of spokes that radially support strap coil.

[0058] In various embodiments of the system, the recess is disposed at a closed end of the track. [0059] In various other embodiments, the disclosure provides a method of loading a strap coil onto a dispenser includes mounting the strap coil onto a hub comprising an axle. The method also includes positioning the strap coil adjacent to the dispenser, where the dispenser comprises a support including a track to guide the axle to a recess. The method includes rolling the strap coil toward the dispenser until the axle is positioned on a receiving end of the track of the support. The method also includes rolling the axle along the track, over a crest of the track, and into the recess such that the strap coil product is elevated and rotatable within the recess.

[0060] In various embodiments of the method, the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, wherein a first end of the axle is received by the first portion of the track and a second end of the axle is received by the second portion of the track.

[0061] In various embodiments of the method, the first and second ends of the axle include respective caps to secure the axle on the track.

[0062] In various embodiments of the method, the first arm is adjacent to the frame, the second arm is attached to the first arm by a brace, and the second arm is cantilevered to the brace.

[0063] In various embodiments of the method, the frame includes wheels that are rotatable about an axis, and wherein the axle of the roll of coiled product is substantially perpendicular to the axis.

[0064] In various embodiments of the method, the hub includes a plurality of spokes that radially support the coiled product.

[0065] In various embodiments of the method, the recess is disposed at a closed end of the track. [0066] Various changes and modifications to the above-described embodiments described herein will be apparent to those skilled in the art. These changes and modifications can be made without departing from the spirit and scope of this present subject matter and without diminishing its intended advantages. Not all of the depicted components described in this disclosure may be required, and some implementations may include additional, different, or fewer components from those expressly described in this disclosure. Variations in the arrangement and type of the components; the shapes, sizes, and materials of the components; and the manners of attachment and connections of the components may be made without departing from the spirit or scope of the claims as set forth herein. Also, unless otherwise indicated, any directions referred to herein reflect the orientations of the components show n in the corresponding drawings and do not limit the scope of the present disclosure. This specification is intended to be taken as a whole and interpreted in accordance with the principles of the invention as taught herein and understood by one of ordinary skill in the art.

Claims

1. A strap dispenser comprising: a frame configured to rest on a surface; and a support attached to the frame, the support including a track that is sized and shaped for loading a strap coil onto the dispenser, the track extending from a receiving end, over a crest, to a recess, wherein the recess is sized and shaped to receive an axle of a hub that holds the strap coil, wherein a surface of the track at the bottom of the recess is positioned at a first height, and wherein the receiving end is positioned at a second height that is lower that the first height.

2. The strap dispenser of claim 1. wherein the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, and wherein the first and second portions of the track are sized and shaped to receive respective first and second ends of the axle of the hub.

3. The strap dispenser of claim 2, wherein the first arm is adjacent to the frame, wherein the second arm is attached to the first arm by a brace, and wherein the second arm is cantilevered to the brace.

4. The strap dispenser of claim 1, wherein the frame includes a foot configured to contact the surface that extends under the support.

5. The strap dispenser of claim 1, wherein the frame includes wheels that are rotatable about an axis, and wherein the recess is shaped to hold the axle of the hub in an orientation that is substantially perpendicular to the axis.

6. The strap dispenser of claim 1, wherein the recess is disposed at a closed end of the track.

7. A system for dispensing strap from a strap coil, the system comprising: a hub including an axle; the strap coil surrounding the hub; and a dispenser comprising: a frame configured to rest on a surface, and a support attached to the frame and including a track that is sized and shaped for loading the strap coil onto the dispenser, the track extending from a receiving end, over a crest, to a recess, wherein the recess cradles the axle of the hub and wherein a surface of the track at the bottom of the recess is positioned above the receiving end of the track such that the strap coil is elevated and rotatable within the recess.

8. The system of claim 7, wherein the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, wherein a first end of the axle is received by the first portion of the track and a second end of the axle is received by the second portion of the track.

9. The system of claim 8, wherein the first and second ends of the axle include respective caps to secure the axle on the track.

10. The system of claim 8. wherein the first arm is adjacent to the frame, wherein the second arm is attached to the first arm by a brace, and wherein the second arm is cantilevered to the brace.

11. The system of claim 7, wherein the frame includes wheels that are rotatable about an axis, and wherein the axle of the hub product is substantially perpendicular to the axis.

12. The system of claim 7, wherein the hub includes a plurality of spokes that radially support the strap coil.

13. The system of claim 7, wherein the recess is disposed at a closed end of the track.

14. A method of loading a strap coil onto a dispenser, the method comprising: mounting the strap coil onto a hub comprising an axle; positioning the strap coil adjacent to the dispenser, wherein the dispenser comprises a support including a track to guide the axle to a recess; rolling the strap coil toward the dispenser until the axle is positioned on a receiving end of the track of the support; and rolling the axle along the track, over a crest of the track, and into the recess such that the strap coil is elevated and rotatable within the recess.

15. The method of claim 14, wherein the support includes a first arm that forms a first portion of the track and a second arm that forms a second portion of the track, wherein a first end of the axle is received by the first portion of the track and a second end of the axle is received by the second portion of the track.

16. The method of claim 15, wherein the first and second ends of the axle include respective caps to secure the axle on the track.

17. The method of claim 15, wherein the first arm is adjacent to the frame, wherein the second arm is attached to the first arm by a brace, and wherein the second arm is cantilevered to the brace.

18. The method of claim 14, wherein the frame includes wheels that are rotatable about an axis, and wherein the axle of the hub is substantially perpendicular to the axis.

19. The method of claim 14, wherein the hub includes a plurality of spokes that radially support the strap coil.

20. The method of claim 14, wherein the recess is disposed at a closed end of the track.