Dual hook flat strap attachment device system and method

Abstract

The attachment device includes a first hook and a second hook, the first and second hooks being biased toward each other and interconnected to each other, such first and second hooks having a first position in which a first curved end of the first hook does not abut a second curved end of the second hook and a second position in which the first curved end of the first hook abuts a second curved end of the second hook.

Description

[Technical field]

[0001] The present invention relates to a dual hook flat strap attachment device system and method. [Background technology]

[0002]

[0002] Throughout this document, "anchored point," "anchor point," and "fixed anchor point" are used interchangeably and are intended to convey the same meaning.

[0003] Strap tensioning devices are widely used and are available today in several designs, with ratchet and cam lock devices being the most prevalent. The straps incorporated into these types of tensioning devices are typically terminated with a hook, available in a variety of shapes and sizes, that is used to secure the free end of the strap to a fixed anchor point.

[0003]

[0004] The most commonly used hook design for strap termination, especially in strap tensioning devices sized for use with 1 inch wide webbing, is called an "S hook." An S hook is an "S" shaped hook with the bottom end of the "S" closed and the top end of the "S" open. The S hook is permanently secured to one end of the strap by a sewn loop to capture the closed portion of the S shaped hook 262 prior art (FIG. 15a). Thus, the strap includes an "S" shaped hook permanently affixed to the strap end, and the open end of the S shaped hook can be removably attached to a fixed anchor point (FIG. 15b).

[0004]

[0005] The majority of strap tensioning devices on the market today, whether ratcheting or cam-locking, utilize two straps and are typically configured in what is referred to as a fixed end configuration. These are strap configurations in which the ends of the two straps are removably secured to separate anchor points. Typically, the strap tensioning device is positioned between the anchor points, with one of the straps permanently affixed to the tensioning device and the other strap being pulled out and held releasably secured to the tensioning device.

[0005]

[0006] While S-hooks are the predominantly used means for securing strap ends to anchor points, other means exist for securing strap ends. Two commonly used means are the "J-hook" 264 prior art (Fig. 16a) and the carabiner 266 prior art (Fig. 19). Another method is to simply use a loop sewn into the strap end 241 prior art (Fig. 17) without employing any type of hook, and thus only by attaching the sewn end loop directly to the anchor point (Fig. 18).

[0006]

[0007] A J-hook consists of a round wire stock formed into a triangle shape with the leg of the triangle at one of the three vertices of the triangle having a hook-shaped end turned perpendicular to the plane of the triangle. The curved hook portion resembles the curved base of the letter "J." The side of the triangle located opposite the hook end of the J-hook serves as the attachment point for the sewn strap. The main difference between S-hooks and J-hooks is the orientation of the hook portion of each style of hook. In an S-hook, the hook portion is oriented parallel to the plane defined by the flat area of ​​the strap, while in a J-hook, the two hook-shaped wire form ends are oriented perpendicular to the plane defined by the flat area of ​​the strap.

[0007]

[0008] With both styles of hooks, it is not uncommon for straps that are permanently secured to the tensioning device to include an additional loop or D-shaped metal ring 268 prior art (FIG. 16c) of webbing 242 prior art (FIG. 15c) that is sewn to the strap and located near the point where the strap is permanently attached to the tensioning device. By encircling the anchor point with an S-hook (or J-hook) sewn to the strap end and then securing the hook portion of the S-hook (or J-hook) into a secondary small loop or D-ring, the strap can be removably secured to an anchor point that is much larger than the S-hook (or J-hook) can directly accommodate (FIGS. 15c, 16c).

[0008]

[0009] In some cases, the sewn loop or D-ring is provided on a second strap rather than a strap permanently attached to the tensioning device. However, the inclusion of a sewn loop or D-ring on this strap limits the minimum length to which the strap / tensioning device can be pulled. This limit becomes even more restrictive if both straps include sewn loops or metal D-rings.

[0009]

[0010] The carabiner-style hook 266 prior art (FIG. 19) used for strap attachment functions similarly to both the S-hook and J-hook with the added function of providing a more secure means for removably securing a strap end to an anchor point. Carabiner-style hooks typically include a locking gate manufactured as either a wire-form spring gate or a spring-loaded pivoting member made from the same material as the hook itself. In either case, the carabiner's locking member is spring-loaded to a closed position but can be rotated open to allow attachment of the hook to the anchor point. The force of the spring biasing the movable member to the closed position rotates or pivots the open member back to the closed position once the carabiner is secured to the anchor point.

[0010]

[0011] Although carabiner-style hooks provide a more secure means of anchor attachment than S-hooks, carabiner-style hooks do not have the anchoring capacity of a comparably sized S-hook. Anchor capacity is the largest diameter anchor to which a carabiner can be attached. The primary reason for this is that the space required for the rotation of the locking gate consumes a significant amount of volume within the carabiner footprint (Figure 19).

[0011]

[0012] Additionally, carabiners are structurally weak when loaded in a way that subjects them to severe twisting along the length of the carabiner body, or when side loads are applied directly to the movable gate. The movable locking gate of a carabiner is typically designed to accommodate large tensile loads along the length of the carabiner, but the c-shape of the carabiner body that mates with the locking member is typically not designed to accommodate large torque loads or side loads.

[0012]

[0013] Webbing has a rectangular cross-section and is much wider than it is thick. This contrasts with ropes, which have a circular cross-section. When high tension webbing is fed through a carabiner, the carabiner can be subjected to unequal twisting along the carabiner's long axis, especially when the anchor points prevent the carabiner from rotating and equalize the twisting induced by the webbing. Thus, the asymmetric design of the carabiner makes it more vulnerable to damage from non-tensile loads when paired with webbing than when paired with ropes of round cross-section.

[0013]

[0014] A drawback of open ended S-hooks and J-hooks is that they are open ended. Nothing actually holds the hook securely at the anchor point other than the induced tension applied to the strap by the tensioning device. Open ended hooks can unintentionally disengage from the anchor point if improperly positioned relative to the anchor or if slack exists in the webbing.

[0014]

[0015] Finally, it is worth mentioning that most S-hooks are manufactured with a conformal coating on the hook. This is seen as a clear advantage for protecting the surface of the anchoring point, but it also precludes the possibility of allowing the strap to move through the closed part of the S-hook without damaging the conformal coating applied to either the hook or the webbing. In straps that are permanently affixed to the hook, this is not considered a disadvantage. However, in applications where it is desirable for the webbing to move through the closed part of the hook, this is a disadvantage. Summary of the Invention [Problem to be solved by the invention]

[0015] [Means for solving the problem]

[0016]

[0016] The embodiments described herein allow for a removable, secure attachment between a strap end, including a sewn end loop, and a fixed anchor point. Additionally, the embodiments can be selectively attached to or removed from the sewn end loops on the strap. Thus, when the strap is used with a strap tensioning device, the user is given the option to include or remove the embodiments from the strap configuration.

[0017]

[0017] Unlike S hooks and J hooks which are permanently attached to the strap end, these embodiments can be selectively added to or removed from existing sewn loops on the strap end, thus matching the convenience of gated carabiners.

[0018]

[0018] Additionally, while providing an effective, closed loop means of attaching to an anchor, embodiments match the greater anchor capacity and physical robustness of more traditional, widely used open style S-hook and J-hook constructions without incurring the structural weaknesses of gated carabiners.

[0019] Another, and perhaps less obvious, aspect of the embodiments described herein is their common appearance with the universal S-hook. Users will immediately recognize the familiarity in design and use while performing the same function as the S-hook, while also recognizing the added security built into the attachment scheme of the embodiments.

[0020]

[0020] The embodiments described herein also provide a secure anchor attachment means when the strap is routed around a large diameter anchor point that requires the embodiment to re-engage the strap itself rather than a fixed anchor. This is accomplished without incorporating any additional loops or D-rings into the strap and without risking the embodiment becoming disengaged from the strap when the strap is in a slack state. Additionally, the structural integrity and load-bearing capabilities of the embodiments are not compromised when so configured.

[0021]

[0021] Additionally, the embodiment can be configured to function as a static pulley, allowing a strap under tension to contact and pass over the load-bearing surface of the embodiment without damaging either the strap or the surface of the embodiment.

[0022] In one embodiment, the attachment device includes a first hook and a second hook, the first and second hooks being biased toward one another and interconnected with one another, such first and second hooks having a first position in which the first curved end of the first hook does not abut the second curved end of the second hook, and a second position in which the first curved end of the first hook abuts the second curved end of the second hook. In one alternative, the first and second hooks rotate between the first and second positions. Alternatively, the attachment device further includes a housing, the housing interconnecting the first and second hooks and providing a biasing mechanism, the biasing force biasing the first and second hooks toward one another. In another alternative, the attachment device further includes a first spring located in the housing, the first spring providing the biasing force. In another alternative, the attachment device further includes a central wall, the central wall being located on the housing, and the first spring pressing against the housing and the first hook to bias the first hook. In another alternative, the attachment device further includes a second spring located on the housing, the second spring pressing against the housing and the second hook to bias the second hook. Alternatively, the first hook has a first opening, the second hook has a second opening, the first hook has a straight base, and the second hook has a straight base. In another alternative, the first and second hooks lie flat against each other in the second position, whereby the first curved end is aligned with the second curved end, and the first opening opens in an opposite direction to the second opening. Alternatively, a portion of each of the first and second hooks has a j-shape, and in the second position, the first and second hooks lie flat on top of each other such that the j-shape of the first hook overlaps the j-shape of the second hook and the first opening opens in the opposite direction to the second opening. In another alternative, the housing includes a gap, the gap being sized to receive and secure the flat strap. Alternatively, the first hook includes a first bottom leg, the first bottom leg being within the housing, and the second hook includes a second bottom leg, the second bottom leg being within the housing. In another alternative, the first and second bottom legs are each straight legs facing the first and second curved ends, respectively.Alternatively, the first bottom leg includes a first central swage, the first central swage oriented to push against the first spring to create a biasing force for the first hook. In another alternative, the second bottom leg includes a second central swage, the second central swage oriented to push against the second spring to create a biasing force for the second hook. Alternatively, the first and second springs are leaf springs. In another alternative, the first bottom leg includes a third swage, the second bottom leg includes a fourth swage, the third swage in a first notch in the housing, the first notch limiting rotation of the first hook, and the fourth swage in a second notch in the housing, the second notch limiting rotation of the second hook. Alternatively, the first and second hooks rotate about the first and second bottom legs, respectively, between the first and second positions.

[0023] In one embodiment, the attachment device includes a first hook and a second hook, the first and second hooks being biased toward each other and interconnected to each other, such first and second hooks having a first position in which a first curved end of the first hook is away from a second curved end of the second hook, and a second position in which a portion of each of the first and second hooks has a j-shape, in the second position the first and second hooks are laid flat on top of each other such that the j-shape of the first hook is superimposed on the j-shape of the second hook, and the first opening opens in the opposite direction to the second opening. In one alternative, the first hook has a straight base and the second hook has a straight base.

[0024] In one embodiment, a method of operating an attachment device includes providing an attachment device including a first hook and a second hook, the first and second hooks being biased toward one another and interconnected to one another, such first and second hooks having a first position in which a first curved end of the first hook does not abut a second curved end of the second hook, and a second position in which the first curved end of the first hook does not abut a second curved end of the second hook. The method further includes pressing the first and second curved ends against a connection point at the second position. The method further includes bending the first and second curved ends to the first position via the pressing. The method further includes twisting and releasing the attachment device to return the first and second hooks to the second position. Alternatively, the method includes a method in which the first hook has a first opening and the second hook has a second opening, the first hook has a straight base and the second hook has a straight base and a portion of each of the first and second hooks has a j-shape, and in the second position the first and second hooks are laid flat on top of each other such that the j-shape of the first hook is superimposed on the j-shape of the second hook and the first opening opens in the opposite direction to the second opening. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is an isometric view of one embodiment of the attachment device 100 with the hooks closed. [Diagram 2]

[0026] FIG. 2 is an exploded isometric view of the mounting device of FIG. 1. [Diagram 3]

[0027] FIG. 2 is an isometric view of the mounting device of FIG. 1 with the hooks closed and the end caps not shown. [Figure 4]

[0028] FIG. 2 is an isometric view of the mounting device of FIG. 1 with the hooks open. [Diagram 5]

[0029] FIG. 2 is a front view of the mounting device of FIG. 1 with the hooks closed. [Figure 6]

[0030] Figure 6a is one in a series of isometric views illustrating the step-by-step progression of attaching a sewn end loop to the attachment device of Figure 1. Figure 6b is the next in the series. Figure 6c is the next in the series. Figure 6d is the next in the series. [Figure 7]

[0031] Figure 7a is one in a series of isometric views depicting a step-by-step progression of the attachment device of Figure 1 connected to a section of round bar with the attachment device secured to a loop sewn to the end of a strap. Figure 7b is the next in the series. Figure 7c is the next in the series. Figure 7d is the next in the series. [Figure 8]

[0032] Figure 8a is one in a series of isometric views depicting a step-by-step progression of the attachment device of Figure 1 connecting to a metal loop anchor such that the attachment device is secured to a loop sewn to the end of a strap. Figure 8b is the next in the series. Figure 8c is the next in the series. Figure 8d is the next in the series. [Figure 9]

[0033] Figure 9a is a series of isometric views depicting the step-by-step progression of a strap in which the hooks of the attachment device of Figure 1 are routed around a large diameter fixed anchor attached to the strap along its length, and the attachment device is secured to a loop sewn to the end of the strap. Figure 9b is the next in the series. Figure 9c is the next in the series. Figure 9d is the next in the series. [Figure 10]

[0034] Figure 10a is one in a series of isometric views depicting a step-by-step progression of attaching a strap to the attachment device of Figure 1, which is secured to a loop-style fixed anchor and has a configuration that can accommodate large tension forces during insertion of the strap without adversely affecting either the strap or the attachment device. Figure 10b is the next in the series. Figure 10c is the next in the series. [Figure 11]

[0035] Figure 11a is one in a series of isometric views depicting a step-by-step progression of attaching the attachment device of Figure 1 to a sewn loop positioned along a strap. Figure 11b is the next in the series. Figure 11c is the next in the series. Figure 11d is the next in the series. [Figure 12]

[0036] Figure 12a is an isometric view depicting an alternative embodiment of the attachment device in which the two leaf springs from the attachment device are replaced with a single U-shaped spring and the positions of both hooks on the attachment device are influenced by the U-shaped spring. Figure 12b is a cut-away view of Figure 12a. Figure 12c is a view of the U-shaped spring. [Figure 13]

[0037] Figure 13a is an isometric view depicting an alternative embodiment in which the two leaf springs from the attachment device are replaced with a single torsion spring, and the position of both hooks in the embodiment is influenced by the torsion spring. Figure 13b is a cut-away view of Figure 13a. Figure 13c is a view of the torsion spring. [Figure 14]

[0038] FIG. 2 is an isometric view depicting a prior art single strap cam lock device arranged in a fixed end configuration utilizing two attachment devices as in FIG. 1 to removably secure the strap to a fixed anchor point. [Figure 15]

[0039] Figure 15a is a prior art isometric view illustrating an S-hook strap, Figure 15b is a prior art isometric view illustrating an S-hook strap with an S-hook secured to a round bar section, and Figure 15c is a prior art isometric view illustrating an S-hook strap with an S-hook secured to a loop sewn onto the strap. [Figure 16a]

[0040] Figure 16a is a prior art isometric view illustrating a J-hook strap, Figure 16b is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a round bar section, and Figure 16c is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a D-ring sewn onto the strap. [Figure 16b]

[0040] Figure 16a is a prior art isometric view illustrating a J-hook strap, Figure 16b is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a round bar section, and Figure 16c is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a D-ring sewn onto the strap. [Figure 16c]

[0040] Figure 16a is a prior art isometric view illustrating a J-hook strap, Figure 16b is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a round bar section, and Figure 16c is a prior art isometric view illustrating a J-hook strap with a J-hook secured to a D-ring sewn onto the strap. [Figure 17]

[0041] FIG. 1 is an isometric view of a loop sewn onto the end of a strap, prior art. [Figure 18]

[0042] FIG. 18 is an isometric view of the prior art, depicting a loop sewn onto the end of the strap from FIG. 17 secured to a round bar section using a Lark's Head knot. [Figure 19]

[0043] Prior art, isometric view depicting a carabiner secured to both the round bar section from FIG. 17 and a loop sewn to the strap end. (Note that the carabiner's locking gate is shown held open by the round bar section, highlighting the smaller anchoring capacity of a typical carabiner when compared to a comparably sized generic S-hook.) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026]

[0045] Certain terms are used herein merely for convenience and should not be taken as limitations on the embodiments of the system and method of the dual hook flat strap attachment device (commonly referred to as the attachment device). In many embodiments, the attachment device includes two hooks biased toward each other. The hooks move rotationally away from each other and initially contact the plane of the hook. The hooks are biased toward each other via a leaf spring system, with the base of each hook pushing against a spring held by a central portion. This mechanism may be included in the central body or housing. In some alternatives, the central portion may be omitted and a single spring may be located in the central portion of the housing. In some embodiments, a double-sided folded leaf spring may be used.

[0027]

[0046] 1-5. The mounting device 100 (an example of a preferred embodiment) is made up of five unique parts, three of which are used twice in this embodiment, so if two leaf springs are used, the mounting device 100 includes a total of eight parts.

[0028]

[0047] The parts are referenced as hooks 110 (quantity 2), housing 130, center wall 150, leaf springs 170 (quantity 2), and end caps 190 (quantity 2).

[0048] The housing 130 serves as the base component of the mounting device 100. In many configurations, the other components that make up the mounting device interface with and are constrained by the housing in some manner. The hook 110 is c-shaped, with the bottom leg 118 of the hook being straight and including two swage details, namely bottom leg center swage 122 and bottom leg end swage 124. Various alternative shapes for the hook may be used. In many scenarios, it is important to include a straight leg at the bottom of the hook to provide for rotation of the hook, but even here substitutions are possible. Additionally, a swage is used in many scenarios, but the concept of the swage is to provide a mechanism for the spring to push against to provide a rotational force. Many alternatives are possible for the swage detail, including but not limited to a pin or peg through the leg for the spring to push against, cutting or other modification of the leg shape, bending the leg, or various other configurations. The two hooks 110 are constrained within the housing and held opposite each other, contacting each other when in the closed position 211. The central wall 150 is positioned longitudinally within the housing and is held in place by the housing bottom gap 138 and by a number of interlocking details 154, 156 incorporated into the bottom edge of the central wall. The top edge 160 of the central wall 150 helps to hold the hook 110 in place within the housing 130. The leaf spring 170 is rectangular in shape and preformed into a curve that is oriented along the length of the part. Two leaf springs 170 are utilized in the mounting device 100 and are positioned on either side of the central wall 150. The leaf springs 170 normally provide the motive force that biases the two hooks 110 to maintain the closed position 211. Finally, two end caps 190 are press-fit onto the open ends 132, 133 of the housing 130 to provide additional protection in case of any contact events and to improve the appearance of the mounting device 100. The end cap 190 also encapsulates the lower portion of the hook 110 without preventing rotational displacement of said hook. In some embodiments, the leaf spring may be replaced with a coil spring. Alternatively, the center wall may be eliminated and simply a coil spring or double-sided folded leaf spring may be used. In the various embodiments illustrated, curved hooks are shown, but the hook ends need not be curved and may be square, triangular, or other shapes.The whole point of the hooks is to have an area that overlaps the other hook when the two are aligned, with a hook axis on either side. Additionally, the housings on either end may be modified to take other forms or may be omitted. In many embodiments, the device includes a housing with side walls and a mechanism to hold the bottom legs of the hooks within the housing so that the hooks press against one or more springs and are thus biased toward each other.

[0029]

[0049] To assemble the attachment device 100, each hook 110 is slid into the housing 130 from either end 132, 133 of the housing. The central wall 150 then slides into the housing 130 to hold the hook 110 in place. The top edge 160 of the central wall is pressed into the hook legs 118 of each hook 110, holding the hook legs in a concentric orientation against the bend radius 136 formed between the housing top surface 146 and the housing side wall 137. A swage 124 located at the end 120 of the hook bottom leg 118 is restrained by a cutout 135 in each end opening 132, 133 of the housing 130. The cutouts 135 in each end opening 132, 133, in conjunction with the top edge 160 of the central wall, prevent the hook from being dislodged from the housing whenever an outwardly directed force 230 is applied to either hook shaft 112. The center wall 150 is captured and held end-to-end against the housing by the interlocking action between the center wall bottom edge central tabs 156 and the housing bottom central cavity 142. The center wall bottom edge end tabs 154 press against the housing bottom inner surface 143 while the center wall top edge 160 presses against the respective hook legs 118 to hold the center wall 150 in position top-to-bottom against the housing 130. When the center wall is inserted into the housing, the housing side walls 137 momentarily spread apart from each other until the center wall 150 moves to its final position. When the center wall 150 is properly positioned, the housing side walls 137 spring back to their original position, holding the center wall in the position described above.

[0030]

[0050] The first leaf spring 170 slides into the housing 130 through one of the end openings 132, 133 such that the top edge 176 of the leaf spring presses against the hook leg central swage 122 while each end 172 of the leaf spring presses against the center wall 150, causing the hook leg central swage to press outwardly away from the center wall. The bottom edge 178 of the leaf spring presses into a bend formed between the housing side wall 137 and the housing bottom inner surface 143. The leaf spring 170 slides into the housing 130 until each end 172 of the leaf spring is restrained by the inner surface of the semi-pierce 158 at the end of the center wall.

[0031]

[0051] The second leaf spring 170 slides into the housing 130 in the same manner as the first leaf spring, through one of the end openings 132, 133 on the side of the central wall 150 opposite the first leaf spring 170. When both leaf springs 170 are properly positioned, the apexes 114 on each hook 110 press inward 229 (FIG. 1), bringing the hooks into contact with each other, thus biasing the hooks into the closed position 211.

[0032]

[0052] The leaf spring 170, thus designated as a leaf spring, is manufactured from flat sheet spring steel. However, when manufactured, the leaf spring is preformed into a curved shape 174. The amount of force that presses the two hooks together can be specifically adjusted by varying the amount of preformed curvature 174 and / or the thickness of the material used to manufacture the leaf spring 170. Increasing the amount of preformed curvature 174 or increasing the thickness of the leaf spring material increases the force that each hook presses against the other. Additionally, changing the length, thickness, or material from which the spring is formed can alter the strength.

[0033]

[0053] Each hook 110 can be independently rotated 214 by applying a motive force 228 to the hook shaft 112, rotating outwardly away from its point of contact with the other hook to the open position 212. The hook rotation 214 occurs about an axis 119 defined by the bottom leg 118 of the hook. An edge 134, formed by a cutout 135 in the housing 130, limits the rotational movement of each hook 110. Each hook 110, independent of the other, returns to the closed position 211 whenever the motive force 228 holding the hook open is removed from that hook's hook shaft 112.

[0034]

[0054] The end caps 190 are attached to the housing 130 by placing the openings 194 in the end caps over the hook ends 116 of each hook 110. The end caps 190 are then pushed onto the hooks 110, moving around the curved portions of the hooks until the end caps are brought into position facing the end openings 132, 133 of the housing 130. The end caps are pressed into place on the housing. The projections 192 located on the inner walls of the end caps 190 engage the rectangular openings 144 in the housing side walls 137 and the voids 140 present in the bottom of the housing. Once the projections 192 of each end cap 190 are fully engaged with the openings 144 in the housing side walls 137 and the housing bottom 140, the end caps are locked into place. In some configurations, as currently discussed, the end caps cannot be removed from the housing 130 without causing irreparable damage to the end caps.

[0035]

[0055] While not a critical aspect of the structural integrity of the mounting device 100, each end cap 190 also aids in holding the housing side wall 137 in place, and thus aids in holding the central wall 150 in place, and thus aids in holding the hooks 110 in place.

[0036]

[0056] The end cap 190 serves multiple functions. It provides a cosmetic finish to the attachment device while also preventing the attachment device from damaging other objects that the embodiment may come into contact with. In addition, the end cap helps to prevent debris and other objects from entering the housing 130, thus ensuring proper operation of the hook. Finally, the end cap provides a point 202 for the user to grip the attachment device when securing the embodiment to a strap or when attaching the embodiment to or removing the embodiment from an anchor point.

[0037]

[0057] The leaf springs 170 are manufactured from leaf spring steel and formed accordingly. The housing 130 and center wall 150 can be easily stamped from a steel sheet and die formed / stamped to their respective shapes. The hooks 110 can likewise be manufactured from steel and either directly formed from round stock or stamped and forged. The materials utilized in the manufacture of any of the individual components are based on the performance levels required for a particular implementation of the mounting device 100.

[0038]

[0058] Given the typical load-bearing requirements of current tensioning devices used in the market today, the use of steel as described above is preferred, however, for applications that do not require the level of performance that steel enables, materials such as aluminum, or even molded thermoplastics can provide the same functionality for the mounting device 100.

[0039]

[0059] The end caps 190 are ideally suited for manufacture utilizing a molding process and can be molded from a variety of suitable thermoplastic or other materials including, but not limited to, plastics, metals, and wood.

[0040]

[0060] operation:

[0061] Many embodiments of the attachment device 100 can be used with, and are sized for, one inch wide webbing or straps in a range of thicknesses that include common commercially available webbing selections. Many embodiments of the attachment device will also accept standard one inch wide tubular webbing. Additionally, the attachment device can be sized to accept webbing widths both wider and narrower than one inch. Also, note that commercially available one inch webbing can vary by plus or minus one tenth of an inch or more, so references to one inch wide webbing are generic in nature.

[0041]

[0062] The attachment device 100 is a spring-loaded device utilized to secure the sewn end loop 241 of the strap to the fixed anchor points 250, 251. Two springs 170 located internally to the housing 130 bias the two identical hooks 110 towards the closed position 211. The user (or the actual details of the anchor points) induces the two hooks 110 set opposite each other to open or spread apart as the hooks engage the anchor points 250, 251. Upon attachment to the anchors, the hooks on both sides move back to their original closed position, creating a releasably secure attachment between the strap loop 241 and the fixed anchor points 250, 251 (FIGS. 7a-7d, 8a-8d). Note that the releasably secure attachment exists regardless of whether the strap is in a slack state or under tension by a tensioning device.

[0042]

[0063] Attachment of the attachment device 100 to the strap loop 241 is accomplished by spreading the hooks 110 far enough apart so that the strap loop can be inserted into the gap 210 created between the separated hooks. The strap loop 241 then moves toward the gap 200 that exists between the two end cap overhangs 198. By simply pinching the strap with the thumbs, the user can insert the strap edge into the gap 196 that exists between the housing 130 and the end cap overhang 198 (FIGS. 5, 6a-6d). Note that in FIGS. 6a-9d and 11a-11d, the prior art callouts specifically refer only to the loop end (strap loop 241). In FIG. 14, the prior art callouts specifically refer only to the cam lock device 260.

[0043]

[0064] The attachment device 100 can be removably secured to a strap 240 whenever the strap (with an attached end cap 190) includes loops 241, 242 of sufficient size to allow insertion into the loops of the housing 130. Typically, the loops 241 are located at the ends of the strap; however, loops 242 positioned anywhere along its length will equally suffice (FIGS. 11a-11d).

[0044]

[0065] Thus, a user can either attach the strap loop 241 directly to the primary anchor point 251 (FIG. 18), or secure the strap loop 241 to the mounting device 100 (FIGS. 6a-6d) and then secure the mounting device 100 to the primary anchor points 250, 251 (FIGS. 7a-7d, 8a-8d).

[0045]

[0066] Inserting the strap loops 241 into the gaps 196 between each end cap overhang 198 and the housing 130 essentially moves the strap away from the hooks 110 and away from the open areas 215 that exist between the two end cap overhangs 198 and the overlapping hooks 110. This protects the strap from unintentional damage by isolating it from the fixed anchors to which the mounting device 100 is secured (FIG. 5).

[0046]

[0067] The act of attaching the attachment device 100 to an anchor point varies depending on the designated attributes of the anchor points 250, 251, 252. (FIGS. 7a-7d, 8a-8d, 9a-9d) For the most part, attaching (and removing) the attachment device 100 to most anchor points is as quick as magic, matching the convenience of an open-ended S-hook equally.

[0047]

[0068] For example, Figures 7a-7d illustrate the act of attaching the mounting device 100 to a section of a round bar 251. By simply pressing the mounting device 100 against the round bar 251, the bar begins to separate the two hooks 110 of the mounting device 100. As the mounting device is pressed further against the bar, the hooks separate further and begin to encircle the bar. By rotating the mounting device clockwise approximately 90° through this act, the two hooks can return to the closed position 211, thus completely encircling the bar and creating a secure attachment between the mounting device and the bar.

[0048]

[0069] To release the mounting device 100 from the round bar 251, the action is reversed. The user initiates a counterclockwise 90° rotation of the mounting device to move the hook to the open position 212. At the same time, the mounting device is pulled away from the round bar and the mounting device 100 disengages from the round bar 251.

[0049]

[0070] The requirement to perform a combined push and rotate (install) or rotate and pull (remove) action creates a secure and reliable connection: the attachment device cannot be removed from the fixed anchor by simply pulling on the attachment device or the strap to which it is attached.

[0050]

[0071] Another example, Figures 8a-8d, illustrates the operation of attaching the attachment device 100 to a metal loop 250. This process is similar to the previous example, but a small adjustment to the operation is required: instead of rotating the embodiment approximately 90° along the length of the embodiment, the rotation must occur through the central axis 232 of the circular end of the hook.

[0051]

[0072] Execution of the action can be further simplified by combining the rotation action from the previous example with the rotation described in this example. The actions become so intuitive that the user quickly learns how to perform attachment and detachment in a simple sequential movement.

[0052]

[0073] An important aspect in this is that, again, the actions performed to attach or detach the preferred embodiment from the anchor site require a combination of actions such that each action in isolation is not sufficient to disengage the attachment device from the fixation anchor, thus resulting in a releasably secure attachment of the attachment device 100 to the fixation anchor.

[0053]

[0074] Furthermore, as long as tension is present in the straps while the attachment device 100 is secured to the fixation anchors, removal of the attachment device 100 from the fixation anchors 250, 251, 252 cannot be performed without first removing (or overcoming) the tension in the straps.

[0054]

[0075] 9a-9d show a series of isometric views depicting the step-by-step progression of the strap 240, with the hooks of the attachment device 100 being routed around the large diameter fixed anchors 252 attached along the length of the strap. The attachment device 100 is secured to a loop 241 sewn to the end of the strap. Neither the auxiliary loop 242 sewn to the strap, nor the secondary D-ring 268 sewn to the strap (FIGS. 15c, 16c) are required to ensure a reliable hook-to-strap connection. The hook closure around the strap completely encircles the strap with overlapping hooks. The symmetry of the overlapping hooks also minimizes concerns of uneven applied loads, especially compared to the asymmetrical design of the carabiner / carabiner locking gate (FIG. 19).

[0055]

[0076] 10a-10c illustrate the use of the attachment apparatus 100 as a static pulley. The attachment device 100 can be secured to the fixed anchor 250 without the strap being secured to the attachment device first. The end of the strap 240 can then be introduced into the attachment device 100 by threading the free end of the strap directly into the gap 196 that exists between the housing 130 and the end cap overhang 198. Once the strap 240 is configured as described, it can be pulled through the attachment device with the housing 130 now acting as a static pulley for the strap. In accordance with FIG. 14, a universal cam lock device 260 prior art utilizing a single strap can be configured similarly to the fixed end configurations previously described (FIGS. 7d, 8d). Because the housing 130 of the attachment device 100 does not have any type of conformal coating, the strap 240 under tension can be pulled over the housing without the housing or strap being adversely affected.

[0056]

[0077] Alternative embodiments:

[0078] Two alternative embodiments 400, 500 are shown in Figures 12 and 13, respectively. These alternative embodiments differ from the mounting device 100 by replacing the two leaf springs 170 in the mounting device 100 with a U-shaped spring 401 shown in Figure 12, or a torsion spring 501 shown in Figure 13. In many of the embodiments, the primary importance is that the spring action of either the leaf spring 190, the U-shaped spring 401, or the torsion spring 501 properly biases the two hooks 110 towards the closed position 211. Furthermore, the central wall 150 in the mounting device 100 is replaced in each of the alternative embodiments 400, 500 with an appropriately modified central wall 402, 502 to accommodate each designated spring geometry of each alternative embodiment.

[0057]

[0079] The attachment device 100, and the two alternative embodiments 400, 500, function comparably in terms of the hook action and how the embodiments are attached to and released from fixed anchor points.

[0058]

[0080] Although specific embodiments have been described in detail in the foregoing detailed description, those skilled in the art will recognize that various modifications and substitutions to these details may be developed in light of the overall teachings of the present disclosure and its broad inventive concepts. It is therefore understood that the scope of the present disclosure is not limited to the specific examples and implementations disclosed herein, but is intended to cover modifications within its spirit and scope as defined by the appended claims and all equivalents thereof. [Explanation of symbols]

[0059]

[0044] 100 Preferred embodiment, mounting device 110 Hook 112 Hook shaft 114 Hook Apex 116 Hook end 118 Hook bottom leg 119 Axis defined by the bottom leg of the hook 120 Hook bottom leg end 122 Hook bottom leg center swage 124 Hook bottom leg end swage 130 Case 132 first end opening 133 Second end opening 134 Margin 135 Housing cutout 136 Housing bending radius 137 Case side wall 138 Housing bottom gap 140 Housing bottom end cavity 142 Housing bottom central cavity 143 Inner surface of the bottom of the housing 144 Rectangular opening 146 Top surface of the housing 150 Center wall 154 Center wall bottom edge tab 156 Center wall bottom edge center tab 158 Central wall marginal semi-pierced 160 Center wall top edge 170 Leaf spring 172 Leaf spring end 174 Preformed curvature of leaf spring 176 Leaf spring top edge 178 Bottom edge of leaf spring 190 End Cap 192 End cap protrusion 194 End Cap Opening 196 End cap to housing clearance 198 End Cap Overhang 200 Gap between end caps 202 End Cap Finger Gripping Area 210 Gap between open hooks 211 Hook closed position 212 Hook open position 214 Hook Rotation 215 Area between end cap and closed hook 228 driving force 229 Force direction 230 Force direction 232 Center axis 240 Strap 241 Prior Art, Sewn Loops at the Ends of Straps 242 Prior art, sewn loop along the strap 250 anchor points, welded loops 251 Anchor point, round bar section 252 Anchor point, large diameter 260 Prior Art, Single Strap Universal Cam Lock Device 262 Prior Art, S-Hook Strap 264 Prior Art, J-Hook Strap 266 Prior Art, Carabiner 268 Prior Art, D-shaped ring 400 Alternative Embodiments 401 U-shaped spring 402 Center wall 500 Alternative Embodiments 501 Torsion Spring 502 Center wall

Claims

1. 1. A mounting device comprising: a first hook and a second hook, the first and second hooks being biased toward one another and interconnected to one another, the first and second hooks having a first position in which a first curved end of the first hook does not abut a second curved end of the second hook and a second position in which the first curved end of the first hook abuts the second curved end of the second hook; the first and second hooks rotate between the first position and the second position; a housing interconnecting the first hook and the second hook and providing a biasing mechanism, the biasing force biasing the first and second hooks toward one another; a first spring located on the housing, the first spring providing the biasing force; a central wall located on the housing, the first spring pressing against the housing and the first hook to bias the first hook; a second spring located on the housing, the second spring pressing against the housing and the second hook to bias the second hook; An attachment device, wherein the first hook has a first opening, the second hook has a second opening, the first hook has a straight base, and the second hook has a straight base.

2. The mounting device of claim 1, wherein the first and second hooks lie flat against each other in the second position, such that the first curved end is aligned with the second curved end and the first opening opens in the opposite direction to the second opening.

3. The mounting device of claim 1, wherein a portion of each of the first and second hooks has a J-shape, and in the second position the first and second hooks lie flat on top of each other such that the J-shape of the first hook is overlapped by the J-shape of the second hook and the first opening opens in the opposite direction to the second opening.

4. The mounting device of claim 3, wherein the housing includes a gap, the gap being sized to receive and secure a flat strap.

5. An attachment device as described in claim 4, wherein the first hook includes a first bottom leg, the first bottom leg being within the housing, and the second hook includes a second bottom leg, the second bottom leg being within the housing.

6. The mounting device of claim 5, wherein the first and second bottom legs are straight legs facing the first and second curved ends, respectively.

7. The mounting device of claim 6, wherein the first bottom foot includes a first central swage, the first central swage oriented to press against a first spring to create a biasing force for the first hook.

8. The mounting device of claim 7, wherein the second bottom foot includes a second central swage, the second central swage oriented to press against a second spring to create a biasing force for the second hook.

9. The mounting device of claim 8, wherein the first and second springs are leaf springs.

10. An attachment device as described in claim 9, wherein the first bottom foot includes a third swage, the second bottom foot includes a fourth swage, the third swage is in a first notch in the housing, the first notch limits rotation of the first hook, and the fourth swage is in a second notch in the housing, the second notch limits rotation of the second hook.

11. The mounting device described in claim 10, wherein the first and second hooks rotate around the first and second bottom legs, respectively, between the first position and the second position.

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