CA2157730A1 - Locking pin assembly and related method - Google Patents
Locking pin assembly and related methodInfo
- Publication number
- CA2157730A1 CA2157730A1 CA 2157730 CA2157730A CA2157730A1 CA 2157730 A1 CA2157730 A1 CA 2157730A1 CA 2157730 CA2157730 CA 2157730 CA 2157730 A CA2157730 A CA 2157730A CA 2157730 A1 CA2157730 A1 CA 2157730A1
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- Prior art keywords
- pin
- connecting pin
- securing
- link
- lock
- Prior art date
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- Abandoned
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Abstract
A pin lock mechanism is provided for locking a connecting pin into position. Such a connecting pin may be used, for example, to hold a hitch bar in a trailer hitch receiver or a pivot pin in a fifth wheel hitch. The pin lock mechanism comprises a locking plate with an elongated keyhole shaped slot. The slot includes a first, relatively large opening for receiving the end of the connecting pin, and a second, relatively small opening for sliding over and positioning into an annular groove of the pin. A lock, such as a padlock, is then closed with its shackle extending through the relatively large opening of the slot to secure the plate, and, therefore, the connecting pin in position.
Description
TECHNICAL FIELD
The present invention relates generally to the field of locking devices and, more particularly, to an improved apparatus and method for locking a connecting pin, for a trailer hitch or the like, into position.
BACKGROUND OF INVENTION
It has long been known in the art of recreational towing to provide vehicles with towing hitches for towing trailers or the like. Typically, such hitches have been designed to include a receiver box having a rearwardly directed opening or cavity for the receipt of a hitch or draw bar that carries a hitch ball or other means allowing connection to a trailer. Examples of such a structure include the Class II Universal Multi-Fit Insta-Hitch 06051 and the Class III Universal Multi-Fit Receiver 36034 as manufactured by Reese Products, Inc., the assignee of the present invention. A hitch receiver of this type is also disclosed in, for example, U.S. patent 3,768,837 to Reese, owned by Reese Products, Inc.
It is also known in the art of recreational towing to install a fifth wheel hitch onto the bed of a pickup truck or similar vehicle. Such a towing hitch provides superior load distribution as well as the requisite additional strength and durability to safely tow large loads such as a fully loaded livestock trailer or a large recreational trailer. An example of a hitch of this type includes the 14K Classic 5th Wheel Hitch 30026 manufactured by Reese Products, Inc.
In order to connect a trailer hitch to a receiver box in a towing vehicle, it is known in the art to insert a connecting pin through aligned, matching apertures in the mated hitch bar and receiver box. Known means for securing the connecting pin in the installed position include the use of a spring clip or a cotter pin that positively engages in a groove formed adjacent the distal, protruding end of the connecting pin and prevents it from pulling back through the matching apertures. Similar connecting pin/spring clip arrangements are used to engage and secure various components of other recreational towing equipment, such as fifth wheel hitches. An example of such a cotter pin/connecting pin means is the Pull Pin with Spring Cotter Clip 74055 manufactured by Reese Products, Inc.
The use of spring clip type linking mechanisms, in practice, has proven reliable. The spring clip has an open end to allow attachment, however, it is not locked onto the connecting pin. It should, therefore, be appreciated that it provides no protection against malicious vandalism and theft.
Thus, the use of a conventional spring clip does nothing to reduce the risk of theft of trailer hitch components and possibly the trailer itself. Users of recreational towing devices frequently tow boats, wave runners, motorcycles or campers over great distances. Accordingly, frequent stops at rest areas, service stations, and lodging accommodations are made by users of such towing devices. As a result, such users must periodically . . .
2ls773a leave the vehicles unattended when traveling. When a trailer secured by a spring clip is left unattended, a thief may easily remove both the spring clip and connecting pin, hook up the trailer to another vehicle, and haul it away with minimal effort, all in a relatively short period of time. Similarly, a thief could easily remove expensive components of an empty fifth wheel trailer hitch from an unattended pickup truck.
A need is therefore identified for a connecting means for use in recreational towing that is sturdy, easily installed and removed, and that serves as an effective theft deterrent. Toward this end, a "receiver lock" has recently been developed and is available as product no. 74171 or 74172 from Reese Products, Inc.
More specifically, the lock comprises a housing having an aperture for receiving the distal end of the connecting pin. A displaceable bolt engages in the groove of the connecting pin to secure the pin in position.
While providing good security against theft, such a lock design has at least one significant drawback. Specifically, the lock housing that is received over the end of the connecting pin is relatively bulky. Accordingly, a receiver lock of known design is limited in application to situations where sufficient clearance exists between components to allow its use. As providing the necessary clearance between trailer hitch components to allow use of such a lock is not a primary design criteria, the relatively large size of the lock housing is a serious problem that limits its usefulness.
SUMMARY OF THE INVENTION
Accordingly, it is a primary object of the present invention to provide a pin lock assembly for use in the field of recreational towing that is light weight, inexpensive to produce and easy to install and remove.
Yet another object of the present invention is to provide a pin lock assembly for recreational towing that serves as an effective theft deterrent and may even be used where little clearance exists between trailer hitch and/or vehicle components.
Still another object of the invention is to provide a pin lock assembly for use in recreational towing that may be retrofitted and used with existing towing components.
Additional objects, advantages and other novel features of the invention will be set forth in part in the description that follows and in part will become apparent to those skilled in the art upon examination of the following or may be learned with the practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentality and combinations particularly pointed out in the appended claims.
To achieve the foregoing and other objects, and in accordance with the purposes of the present invention as described herein, a pin lock assembly is provided for locking a connecting pin in a position securing two components together. More specifically, the pin lock assembly includes a connecting pin having (1) a head end, (2) a body member for passing through aligned apertures in the two components whereby the two components 215773() are secured together, and (3) a securing groove adjacent a distal end of the body member.
The pin lock assembly further includes a locking means, such as a padlock or combination lock, and a cooperating securing link for selectively securing the connecting pin in position.
Preferably, the lock is of the type that includes a shackle. The use of a cooperating lock and securing link as a retaining means allows an owner to install or remove linked components without additional tools and with only relatively minimal effort.
More specifically, the securing link comprises a substantially oblong plate in which is formed a substantially keyhole-shaped slot. The slot includes a first larger diameter opening that fits over the connecting pin and receives the locking means, and a second smaller diameter opening that may be positioned in engagement within the securing groove of the connecting pin.
Such a design serves to positively secure two components together such as a trailer hitch receiver and a hitch bar. Further, the securing link design is such that it is capable of being retrofitted onto and used with existing recreational towing equipment.
In accordance with a further aspect of the invention, a method is provided for securely locking a connecting pin including a securing groove into such a position so as to secure two components together. As just described, this is accomplished by utilizing a securing link and a lock including a shackle.
According to the method of the present invention, first is the positioning of a securing link over the distal end of a connecting 215~730 pin extending through and holding selected components together.
Specifically, the distal end of the connection pin is inserted into a relatively large opening in the slot of the securing link. Next is the sliding of the link relative to the connecting pin so as to engage the securing groove of the connecting pin with a second relatively small opening in the slot of the securing link. The diameter of the relatively small opening is sized so as to be smaller than the overall diameter of the connecting pin but sufficiently large so as to allow the link to be fully received in the securing groove. Next, the shackle of the lock is placed through the first relatively larger opening in the slot of the securing link. Finally the shackle is locked thus securely locking the securing link and, therefore, the connecting pin into position.
Still other objects of the present invention will become apparent to those skilled in this art from the following description wherein there is shown and described a preferred embodiment of this invention, simply by way of illustration of one of the modes best suited to carry out the invention. As it will be realized, the invention is capable of other different embodiments, and its several details are capable of modifications in various, obvious aspects all without departing from the invention.
Accordingly, the drawing and descriptions will be regarded as illustrative in nature and not as restrictive.
BRIEF DESCRIPTION OF THE DRAWING
The accompanying drawing incorporated in and forming a part of the specification, illustrate several aspects of the present invention and together with the description serves to explain the principles of this invention. In the drawing:
Fig. 1 is an exploded perspective view of the pin lock assembly of the present invention showing the connecting pin, the securing link, and the lock;
Fig. 2 is a perspective view of a fifth wheel trailer hitch showing various pin lock assemblies in place;
Fig. 3a is a side elevational view showing the initial insertion of the securing link over the connecting pin;
Fig. 3b is a side elevational view showing the relatively smaller diameter slot section of the securing link engaging the securing groove of the connecting pin; and Fig. 3c is a cross-sectional side view showing all components of the pin lock assembly locked into position.
Reference will now be made in detail to the present preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings.
DETAILED DESCRIPTION OF THE INVENTION
Reference is now made to Fig. 1 showing an improved pin lock assembly 10 incorporating the novel features of the present invention. As illustrated for purposes of full disclosure of the invention, the pin lock assembly 10 includes a connecting pin 12 that has a body member that is preferably of a circular cross-section and includes a bend between a head end 11 and a distal end 13 so as to substantially form a V-shape. Accordingly, the head end 11 provides the connecting pin 12 with a laterally projecting handle. The distal end 13 of the connecting pin 12 further includes an annular securing groove 14, the purpose of which will become apparent as this description proceeds.
The pin lock assembly 10 also includes a locking means 15. This locking means 15 may be, for example, a key padlock or a combination lock. As illustrated in Fig. l, and known in the art, the lock 15 preferably includes a rotatable shackle 16 having a distal end capable of selectively engaging and locking in a corresponding aperture 17 in the lock housing 18.
As best shown in Fig. 1 the pin lock assembly 10 further includes a securing link 19. Preferably the securing link 19 comprises an oblong plate of mild or hardened steel and includes a substantially keyhole-shaped slot 20. The slot 20 includes a first relatively large diameter opening 21 to accommodate both the connecting pin 12 and the shackle 16 of the lock 15. The slot 20 further includes a second, relatively small diameter opening 22 for selectively engaging in the said securing groove 14 of the connecting pin lO in a manner described in greater detail below.
The pin lock assembly 10 of the present invention may be used to securely link together and lock into place two separate components including aligned, corresponding through-apertures. The pin lock assembly lO is particularly adaptable for use with recreational towing equipment. For example, various pin lock assemblies lO of the present invention are shown in Fig. 2 securely linking and locking together various components of a fifth wheel hitch assembly F.
~ 21~7730 Specifically, as illustrated in Fig. 2, a pin lock assembly 10 is shown securely linking a laterally projecting mounting lug L of a fifth wheel hitch assembly S within laterally positioned support cradles C. Similarly, pin lock assemblies 10 are depicted securely locking the side bracket members M to the truck bed rails R.
This latter application demonstrates how the pin lock assembly 10 of the present invention may be utilized even in situations where little clearance exists between trailer components. More specifically, when inserted in position as little as 0.15 inch of clearance may exist between the distal end 13 of the connecting pin 12 and the rail R. The slot 20 in the securing link 19 is offset (see particularly Figure 1) so as to provide one sidewall 24 of approximate thickness of 0.15 inch adjacent the relatively large diameter opening 21. Accordingly, the securing link 19 may be positioned over the connecting pin 12 even though very little clearance exists between the pin and the rail R.
As the relatively small diameter opening 22 of the link 19 is engaged in the groove 14 of the pin 12, the approximately 0.5 inch outer radius of the link 19 allows the link to be rocked or rotated upward. This makes it easier to engage the shackle 16 of the lock 15 in the opening 21 so as to secure the assembly 10 in position. A receiver lock of prior art design is simply too bulky to be used in such a low clearance area. Hence, the present design has significant advantages and may even be retrofitted to existing towing equipment in the field.
According to another aspect of the present invention and ~ L5~ 730 as best shown in Figs. 3a-3c, a method is provided for securely locking a connecting pin 12 including a securing groove 14 into a position to secure two components (not shown) together.
Preferably, the distal end 13 of the connecting pin 12 is first inserted through cooperating, aligned apertures of the two components such as, for example, a trailer hitch bar and a hitch receiver box. The beveled distal end 13 of the pin 12 aids in aligning the components as the pin is inserted to connect the components together. The connecting pin 12 is sufficiently long so that when the pin 12 is fully installed with the head 11 engaging one side of the components, the distal end 13, including a securing groove 14, protrudes at least a minimal distance from the other side of the now connected components.
After the connecting pin 12 is fully inserted in position, the securing link 19 is positioned over the protruding distal end 13 of the connecting pin 12. Specifically, as shown in Fig. 3a, a first relatively large diameter opening 21 of the substantially keyhole-shaped slot 20 is positioned over the distal end 13 of the connecting pin 12 (see action arrow A).
As best shown in Fig. 3b, next the link 19 is aligned over the securing groove 14 of connecting pin 12. By sliding the link 19 relatively to the connecting pin 12, the relatively small opening 22 fully engages in the groove 14 (see action arrow B). As the relatively small opening 22 has a diameter smaller than that of the connecting pin body 12, the connecting pin 12 and link 19 are now interconnected and prevented from shifting in an axial position relative to one another. Further, as the overall periphery of the `--21~7730 link 19 is larger in diameter than the connecting pin 12 and will not pass through the cooperating apertures in the components that receive the connecting pin 12, the connecting pin 12 is effectively secured in position with the components positively interconnected.
Next, in order to secure the pin lock assembly 10 into position, a shackle 16 of a lock 15 is inserted through the first, relatively large opening 21 of the slot 20 in the securing link 19.
As should be appreciated, the shackle 16 has a diameter substantially corresponding to the diameter of the connecting pin 12 and only slightly smaller than the opening 21. Thus, when the shackle 16 is rotated and inserted into the corresponding aperture 17 of the lock 15, thereby locking the lock 15, the securing link 19 and connecting pin 12 are positively secured and locked into position (see Fig. 3c).
Advantageously, it should be appreciated that the pin lock assembly 10 of the present invention comprises components that are relatively light weight and simple in design. Accordingly, such components as the connecting pin 12, lock 15 and securing link 19 are relatively inexpensive to produce. Similarly, due to the simple nature of the design, the pin lock assembly 10 of the present invention comprises parts that are easily handled, installed, and retrofitted onto existing recreational towing equipment. They are also easy to use and accordingly promote customer satisfaction.
It should also be appreciated that the pin lock assembly 10 of the present invention advantageously serves as a theft deterrent. Specifically, when the pin lock assembly 10 is used to `~
21577~0 secure expensive recreational towing equipment, it becomes much more difficult for a thief to remove equipment or uncouple a trailer than in the situation where a cotter pin or spring clip retainer is used. Thus, the theft of towing equipment or an actual trailer is discouraged.
In summary, numerous benefits have been described which result from employing the concepts of the present invention. The pin lock assembly of the present invention provides users with a means to securely link and lock various recreational towing components that is light weight, inexpensive to produce, easy to install and capable of being used with existing equipment.
Advantageously, the pin lock assembly further serves as an effective theft deterrent.
The foregoing description of a preferred embodiment of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For example, instead of providing a securing link comprising an oblong plate, a wire form securing link could be utilized.
The embodiment was chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended 1577~0 claims when interpreted in accordance with the breadth to which they are fairly, legally and equitably entitled.
" .. . . ..
The present invention relates generally to the field of locking devices and, more particularly, to an improved apparatus and method for locking a connecting pin, for a trailer hitch or the like, into position.
BACKGROUND OF INVENTION
It has long been known in the art of recreational towing to provide vehicles with towing hitches for towing trailers or the like. Typically, such hitches have been designed to include a receiver box having a rearwardly directed opening or cavity for the receipt of a hitch or draw bar that carries a hitch ball or other means allowing connection to a trailer. Examples of such a structure include the Class II Universal Multi-Fit Insta-Hitch 06051 and the Class III Universal Multi-Fit Receiver 36034 as manufactured by Reese Products, Inc., the assignee of the present invention. A hitch receiver of this type is also disclosed in, for example, U.S. patent 3,768,837 to Reese, owned by Reese Products, Inc.
It is also known in the art of recreational towing to install a fifth wheel hitch onto the bed of a pickup truck or similar vehicle. Such a towing hitch provides superior load distribution as well as the requisite additional strength and durability to safely tow large loads such as a fully loaded livestock trailer or a large recreational trailer. An example of a hitch of this type includes the 14K Classic 5th Wheel Hitch 30026 manufactured by Reese Products, Inc.
In order to connect a trailer hitch to a receiver box in a towing vehicle, it is known in the art to insert a connecting pin through aligned, matching apertures in the mated hitch bar and receiver box. Known means for securing the connecting pin in the installed position include the use of a spring clip or a cotter pin that positively engages in a groove formed adjacent the distal, protruding end of the connecting pin and prevents it from pulling back through the matching apertures. Similar connecting pin/spring clip arrangements are used to engage and secure various components of other recreational towing equipment, such as fifth wheel hitches. An example of such a cotter pin/connecting pin means is the Pull Pin with Spring Cotter Clip 74055 manufactured by Reese Products, Inc.
The use of spring clip type linking mechanisms, in practice, has proven reliable. The spring clip has an open end to allow attachment, however, it is not locked onto the connecting pin. It should, therefore, be appreciated that it provides no protection against malicious vandalism and theft.
Thus, the use of a conventional spring clip does nothing to reduce the risk of theft of trailer hitch components and possibly the trailer itself. Users of recreational towing devices frequently tow boats, wave runners, motorcycles or campers over great distances. Accordingly, frequent stops at rest areas, service stations, and lodging accommodations are made by users of such towing devices. As a result, such users must periodically . . .
2ls773a leave the vehicles unattended when traveling. When a trailer secured by a spring clip is left unattended, a thief may easily remove both the spring clip and connecting pin, hook up the trailer to another vehicle, and haul it away with minimal effort, all in a relatively short period of time. Similarly, a thief could easily remove expensive components of an empty fifth wheel trailer hitch from an unattended pickup truck.
A need is therefore identified for a connecting means for use in recreational towing that is sturdy, easily installed and removed, and that serves as an effective theft deterrent. Toward this end, a "receiver lock" has recently been developed and is available as product no. 74171 or 74172 from Reese Products, Inc.
More specifically, the lock comprises a housing having an aperture for receiving the distal end of the connecting pin. A displaceable bolt engages in the groove of the connecting pin to secure the pin in position.
While providing good security against theft, such a lock design has at least one significant drawback. Specifically, the lock housing that is received over the end of the connecting pin is relatively bulky. Accordingly, a receiver lock of known design is limited in application to situations where sufficient clearance exists between components to allow its use. As providing the necessary clearance between trailer hitch components to allow use of such a lock is not a primary design criteria, the relatively large size of the lock housing is a serious problem that limits its usefulness.
SUMMARY OF THE INVENTION
Accordingly, it is a primary object of the present invention to provide a pin lock assembly for use in the field of recreational towing that is light weight, inexpensive to produce and easy to install and remove.
Yet another object of the present invention is to provide a pin lock assembly for recreational towing that serves as an effective theft deterrent and may even be used where little clearance exists between trailer hitch and/or vehicle components.
Still another object of the invention is to provide a pin lock assembly for use in recreational towing that may be retrofitted and used with existing towing components.
Additional objects, advantages and other novel features of the invention will be set forth in part in the description that follows and in part will become apparent to those skilled in the art upon examination of the following or may be learned with the practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentality and combinations particularly pointed out in the appended claims.
To achieve the foregoing and other objects, and in accordance with the purposes of the present invention as described herein, a pin lock assembly is provided for locking a connecting pin in a position securing two components together. More specifically, the pin lock assembly includes a connecting pin having (1) a head end, (2) a body member for passing through aligned apertures in the two components whereby the two components 215773() are secured together, and (3) a securing groove adjacent a distal end of the body member.
The pin lock assembly further includes a locking means, such as a padlock or combination lock, and a cooperating securing link for selectively securing the connecting pin in position.
Preferably, the lock is of the type that includes a shackle. The use of a cooperating lock and securing link as a retaining means allows an owner to install or remove linked components without additional tools and with only relatively minimal effort.
More specifically, the securing link comprises a substantially oblong plate in which is formed a substantially keyhole-shaped slot. The slot includes a first larger diameter opening that fits over the connecting pin and receives the locking means, and a second smaller diameter opening that may be positioned in engagement within the securing groove of the connecting pin.
Such a design serves to positively secure two components together such as a trailer hitch receiver and a hitch bar. Further, the securing link design is such that it is capable of being retrofitted onto and used with existing recreational towing equipment.
In accordance with a further aspect of the invention, a method is provided for securely locking a connecting pin including a securing groove into such a position so as to secure two components together. As just described, this is accomplished by utilizing a securing link and a lock including a shackle.
According to the method of the present invention, first is the positioning of a securing link over the distal end of a connecting 215~730 pin extending through and holding selected components together.
Specifically, the distal end of the connection pin is inserted into a relatively large opening in the slot of the securing link. Next is the sliding of the link relative to the connecting pin so as to engage the securing groove of the connecting pin with a second relatively small opening in the slot of the securing link. The diameter of the relatively small opening is sized so as to be smaller than the overall diameter of the connecting pin but sufficiently large so as to allow the link to be fully received in the securing groove. Next, the shackle of the lock is placed through the first relatively larger opening in the slot of the securing link. Finally the shackle is locked thus securely locking the securing link and, therefore, the connecting pin into position.
Still other objects of the present invention will become apparent to those skilled in this art from the following description wherein there is shown and described a preferred embodiment of this invention, simply by way of illustration of one of the modes best suited to carry out the invention. As it will be realized, the invention is capable of other different embodiments, and its several details are capable of modifications in various, obvious aspects all without departing from the invention.
Accordingly, the drawing and descriptions will be regarded as illustrative in nature and not as restrictive.
BRIEF DESCRIPTION OF THE DRAWING
The accompanying drawing incorporated in and forming a part of the specification, illustrate several aspects of the present invention and together with the description serves to explain the principles of this invention. In the drawing:
Fig. 1 is an exploded perspective view of the pin lock assembly of the present invention showing the connecting pin, the securing link, and the lock;
Fig. 2 is a perspective view of a fifth wheel trailer hitch showing various pin lock assemblies in place;
Fig. 3a is a side elevational view showing the initial insertion of the securing link over the connecting pin;
Fig. 3b is a side elevational view showing the relatively smaller diameter slot section of the securing link engaging the securing groove of the connecting pin; and Fig. 3c is a cross-sectional side view showing all components of the pin lock assembly locked into position.
Reference will now be made in detail to the present preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings.
DETAILED DESCRIPTION OF THE INVENTION
Reference is now made to Fig. 1 showing an improved pin lock assembly 10 incorporating the novel features of the present invention. As illustrated for purposes of full disclosure of the invention, the pin lock assembly 10 includes a connecting pin 12 that has a body member that is preferably of a circular cross-section and includes a bend between a head end 11 and a distal end 13 so as to substantially form a V-shape. Accordingly, the head end 11 provides the connecting pin 12 with a laterally projecting handle. The distal end 13 of the connecting pin 12 further includes an annular securing groove 14, the purpose of which will become apparent as this description proceeds.
The pin lock assembly 10 also includes a locking means 15. This locking means 15 may be, for example, a key padlock or a combination lock. As illustrated in Fig. l, and known in the art, the lock 15 preferably includes a rotatable shackle 16 having a distal end capable of selectively engaging and locking in a corresponding aperture 17 in the lock housing 18.
As best shown in Fig. 1 the pin lock assembly 10 further includes a securing link 19. Preferably the securing link 19 comprises an oblong plate of mild or hardened steel and includes a substantially keyhole-shaped slot 20. The slot 20 includes a first relatively large diameter opening 21 to accommodate both the connecting pin 12 and the shackle 16 of the lock 15. The slot 20 further includes a second, relatively small diameter opening 22 for selectively engaging in the said securing groove 14 of the connecting pin lO in a manner described in greater detail below.
The pin lock assembly 10 of the present invention may be used to securely link together and lock into place two separate components including aligned, corresponding through-apertures. The pin lock assembly lO is particularly adaptable for use with recreational towing equipment. For example, various pin lock assemblies lO of the present invention are shown in Fig. 2 securely linking and locking together various components of a fifth wheel hitch assembly F.
~ 21~7730 Specifically, as illustrated in Fig. 2, a pin lock assembly 10 is shown securely linking a laterally projecting mounting lug L of a fifth wheel hitch assembly S within laterally positioned support cradles C. Similarly, pin lock assemblies 10 are depicted securely locking the side bracket members M to the truck bed rails R.
This latter application demonstrates how the pin lock assembly 10 of the present invention may be utilized even in situations where little clearance exists between trailer components. More specifically, when inserted in position as little as 0.15 inch of clearance may exist between the distal end 13 of the connecting pin 12 and the rail R. The slot 20 in the securing link 19 is offset (see particularly Figure 1) so as to provide one sidewall 24 of approximate thickness of 0.15 inch adjacent the relatively large diameter opening 21. Accordingly, the securing link 19 may be positioned over the connecting pin 12 even though very little clearance exists between the pin and the rail R.
As the relatively small diameter opening 22 of the link 19 is engaged in the groove 14 of the pin 12, the approximately 0.5 inch outer radius of the link 19 allows the link to be rocked or rotated upward. This makes it easier to engage the shackle 16 of the lock 15 in the opening 21 so as to secure the assembly 10 in position. A receiver lock of prior art design is simply too bulky to be used in such a low clearance area. Hence, the present design has significant advantages and may even be retrofitted to existing towing equipment in the field.
According to another aspect of the present invention and ~ L5~ 730 as best shown in Figs. 3a-3c, a method is provided for securely locking a connecting pin 12 including a securing groove 14 into a position to secure two components (not shown) together.
Preferably, the distal end 13 of the connecting pin 12 is first inserted through cooperating, aligned apertures of the two components such as, for example, a trailer hitch bar and a hitch receiver box. The beveled distal end 13 of the pin 12 aids in aligning the components as the pin is inserted to connect the components together. The connecting pin 12 is sufficiently long so that when the pin 12 is fully installed with the head 11 engaging one side of the components, the distal end 13, including a securing groove 14, protrudes at least a minimal distance from the other side of the now connected components.
After the connecting pin 12 is fully inserted in position, the securing link 19 is positioned over the protruding distal end 13 of the connecting pin 12. Specifically, as shown in Fig. 3a, a first relatively large diameter opening 21 of the substantially keyhole-shaped slot 20 is positioned over the distal end 13 of the connecting pin 12 (see action arrow A).
As best shown in Fig. 3b, next the link 19 is aligned over the securing groove 14 of connecting pin 12. By sliding the link 19 relatively to the connecting pin 12, the relatively small opening 22 fully engages in the groove 14 (see action arrow B). As the relatively small opening 22 has a diameter smaller than that of the connecting pin body 12, the connecting pin 12 and link 19 are now interconnected and prevented from shifting in an axial position relative to one another. Further, as the overall periphery of the `--21~7730 link 19 is larger in diameter than the connecting pin 12 and will not pass through the cooperating apertures in the components that receive the connecting pin 12, the connecting pin 12 is effectively secured in position with the components positively interconnected.
Next, in order to secure the pin lock assembly 10 into position, a shackle 16 of a lock 15 is inserted through the first, relatively large opening 21 of the slot 20 in the securing link 19.
As should be appreciated, the shackle 16 has a diameter substantially corresponding to the diameter of the connecting pin 12 and only slightly smaller than the opening 21. Thus, when the shackle 16 is rotated and inserted into the corresponding aperture 17 of the lock 15, thereby locking the lock 15, the securing link 19 and connecting pin 12 are positively secured and locked into position (see Fig. 3c).
Advantageously, it should be appreciated that the pin lock assembly 10 of the present invention comprises components that are relatively light weight and simple in design. Accordingly, such components as the connecting pin 12, lock 15 and securing link 19 are relatively inexpensive to produce. Similarly, due to the simple nature of the design, the pin lock assembly 10 of the present invention comprises parts that are easily handled, installed, and retrofitted onto existing recreational towing equipment. They are also easy to use and accordingly promote customer satisfaction.
It should also be appreciated that the pin lock assembly 10 of the present invention advantageously serves as a theft deterrent. Specifically, when the pin lock assembly 10 is used to `~
21577~0 secure expensive recreational towing equipment, it becomes much more difficult for a thief to remove equipment or uncouple a trailer than in the situation where a cotter pin or spring clip retainer is used. Thus, the theft of towing equipment or an actual trailer is discouraged.
In summary, numerous benefits have been described which result from employing the concepts of the present invention. The pin lock assembly of the present invention provides users with a means to securely link and lock various recreational towing components that is light weight, inexpensive to produce, easy to install and capable of being used with existing equipment.
Advantageously, the pin lock assembly further serves as an effective theft deterrent.
The foregoing description of a preferred embodiment of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For example, instead of providing a securing link comprising an oblong plate, a wire form securing link could be utilized.
The embodiment was chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended 1577~0 claims when interpreted in accordance with the breadth to which they are fairly, legally and equitably entitled.
" .. . . ..
Claims (7)
1. A pin lock assembly for locking a connecting pin in position to secure two components together, the pin lock assembly comprising:
a connecting pin including a head end, a body member for passing through and securing the two components together and a securing groove adjacent a distal end of said body member opposite said head end;
a means for selectively locking said connecting pin in position; and a securing link, including a slot having a first, relatively large opening for selectively receiving said locking means and a second, relatively small opening for selectively positioning in engagement within said securing groove, said slot being offset in said securing link so as to provide a sidewall of relatively narrow thickness and low profile adjacent said relatively large diameter opening whereby said securing link may be locked in position with said second, relatively small opening engaging in said securing groove so as to lock said connecting pin in position and thereby secure the two components together even in relatively narrow spaces with little clearance.
a connecting pin including a head end, a body member for passing through and securing the two components together and a securing groove adjacent a distal end of said body member opposite said head end;
a means for selectively locking said connecting pin in position; and a securing link, including a slot having a first, relatively large opening for selectively receiving said locking means and a second, relatively small opening for selectively positioning in engagement within said securing groove, said slot being offset in said securing link so as to provide a sidewall of relatively narrow thickness and low profile adjacent said relatively large diameter opening whereby said securing link may be locked in position with said second, relatively small opening engaging in said securing groove so as to lock said connecting pin in position and thereby secure the two components together even in relatively narrow spaces with little clearance.
2. The pin lock assembly of Claim 1, wherein said securing link comprises a plate.
3. The pin lock assembly of Claim 2, wherein said plate is substantially oblong.
4. The pin lock assembly of Claim 1, wherein said locking means includes a shackle.
5. The pin lock assembly of Claim 1, wherein said connecting pin is substantially V-shaped.
6. A method for securely locking a connecting pin including a securing groove into a position to secure two components together by utilizing a securing link and a lock including a shackle, the method comprising the steps of:
providing said securing link with an offset slot and a sidewall of relatively narrow thickness and low profile;
positioning a first relatively large opening in the securing link over the connecting pin:
sliding the link relative to the connecting pin so as to engage the securing groove in the connecting pin into a second, relatively small opening in the securing link;
inserting the shackle of the lock through the first relatively large opening in the securing link; and locking the lock whereby the link and connecting pin are securely locked into position.
providing said securing link with an offset slot and a sidewall of relatively narrow thickness and low profile;
positioning a first relatively large opening in the securing link over the connecting pin:
sliding the link relative to the connecting pin so as to engage the securing groove in the connecting pin into a second, relatively small opening in the securing link;
inserting the shackle of the lock through the first relatively large opening in the securing link; and locking the lock whereby the link and connecting pin are securely locked into position.
7. The pin lock assembly of claim 1, wherein said sidewall has a thickness of substantially 0.15 inches.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30936294A | 1994-09-20 | 1994-09-20 | |
| US08/309,362 | 1994-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2157730A1 true CA2157730A1 (en) | 1996-03-21 |
Family
ID=23197912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2157730 Abandoned CA2157730A1 (en) | 1994-09-20 | 1995-09-07 | Locking pin assembly and related method |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU3038595A (en) |
| CA (1) | CA2157730A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9849738B2 (en) | 2015-03-02 | 2017-12-26 | Horizon Global Americas Inc. | Fifth wheel conversion hitch mounting system |
-
1995
- 1995-08-31 AU AU30385/95A patent/AU3038595A/en not_active Abandoned
- 1995-09-07 CA CA 2157730 patent/CA2157730A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9849738B2 (en) | 2015-03-02 | 2017-12-26 | Horizon Global Americas Inc. | Fifth wheel conversion hitch mounting system |
| US10358176B2 (en) | 2015-03-02 | 2019-07-23 | Horizon Global Americas Inc. | Fifth wheel conversion hitch mounting system |
| US11148735B2 (en) | 2015-03-02 | 2021-10-19 | Horizon Global Americas Inc. | Fifth wheel conversion hitch mounting system |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3038595A (en) | 1996-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |