Patent Publication Number: US-2023150585-A1

Title: Truck Bedslide Assembly

Description:
RELATED APPLICATIONS 
     The present application relates to and claims priority to U.S. patent application Ser. No. 17/083,889, filed on Oct. 29, 2020, entitled “Truck Bedslide Assembly,” and U.S. Provisional Patent Application, Ser. No. 62/929,387, filed on Nov. 1, 2019. The subject matter disclosed in these applications is hereby expressly incorporated into the present application. 
    
    
     TECHNICAL FIELD AND SUMMARY 
     The present disclosure relates to trucks such as pickup trucks, and truck beds used on pickup trucks, and like vehicles. In particular, the present disclosure relates to a bedslide assembly affixed to the truck bed, which is extendable from, and retractable to, the truck bed. 
     A truck bed is a large open cargo space of a pickup truck located behind the cab section. The truck bed is typically composed of a deck floor bounded by opposing sidewalls. A bulkhead wall extends between the opposed sidewalls and is located adjacent the cab section. The tailgate is located opposite the bulkhead wall at the rear end of the truck bed and movable between open and closed positions. 
     An illustrative embodiment of the present disclosure provides a bedslide assembly for use on a deck bed of a pickup truck. The bedslide assembly comprises a bottom frame assembly, middle frame assembly, and top frame assembly. The bottom frame assembly is configured to be attached to the deck bed. The bottom frame assembly includes spaced apart opposing first and second side bars, at least one roller rotatably attached to each of the first and second side bars, and at least one cross member extending transverse the first and second side bars. The at least one cross member includes a first latch bracket and second latch bracket attached thereon. A stop arm extends transverse to the at least one cross member and includes a plurality of periodically spaced holes. 
     The middle frame assembly includes opposing spaced apart first and second rail sets. Each of the first and second rail sets includes an upper rail and a lower rail. At least one cross member with a full extension stop bracket attached to the first and second rail sets. The middle frame assembly further incudes a first latch assembly, a second latch assembly, and a stop member. The first latch assembly includes a hook biased toward a downward latching direction with respect to the truck bed. The biased hook includes a paddle both of which are pivotable. The second latch assembly includes a hook biased toward an upward latching direction with respect to the truck bed. The biased hook includes a paddle both of which are pivotable. The stop member is at least partially pivotable with respect to the middle frame assembly. 
     The top frame assembly includes spaced apart opposing first and second side bars, at least one roller rotatably attached to each of the first and second side bars, at least one cross member extending transverse the first and second side bars, an end plate also extending transverse the first and second side bars, a stop member, and a selective stop mechanism. The stop member of the top frame assembly is at least partially pivotable with respect to the top frame assembly. The selective stop mechanism includes a stop pin that extends transverse with respect to the spaced apart opposing first and second side bars. 
     At least one roller is rotatably attached to each of the first and second side bars of the top frame assembly. The rollers engage and are movable along one of the upper rails of the opposing spaced apart first and second rail sets of the middle frame assembly. At least one roller is rotatably attached to each of the first and second side bars of the bottom frame assembly as well. The rollers engage and are movable along one of the lower rails of the opposing spaced apart first and second rail sets of the middle frame assembly. 
     The stop pin of the selective stop mechanism selectively engages any one of the plurality of periodically spaced holes of the stop arm. This limits movement of the top frame assembly and the middle frame assembly with respect to the bottom frame assembly at each of the plurality of periodically spaced holes. The hook of the first latch assembly is selectively engageable with the first latch bracket on the cross member of the bottom frame assembly. When the paddle of the first latch assembly is struck by the end plate of the top frame assembly the hook of the first latch assembly is releasable from the first latch bracket on the cross member of the bottom frame assembly. The hook of the second latch assembly is selectively engageable with the end plate of the top frame assembly, and when the paddle of the second latch assembly is struck by the second latch bracket of the bottom frame assembly the hook of the second latch assembly is releasable from the end plate of the top frame assembly. 
     In the above and other embodiments, the tonneau cover may further comprise: the stop member of the top frame assembly being engageable with the full extension stop bracket of the middle frame assembly to limit extension of the top frame assembly with respect to the middle frame assembly; the stop member of the middle frame assembly being engageable with the second latch bracket of the bottom frame assembly to limit extension of the middle frame assembly with respect to the bottom frame assembly; the upper rail of each of the first and second rail sets includes an inwardly-positioned bearing; the at least one roller rotatably attached to the first side bar of the top frame assembly is outwardly-positioned and is movable along the inwardly-positioned bearing of the upper rail of the first rail set of the middle frame assembly and the at least one roller rotatably attached to the second side bar of the top frame assembly is outwardly-positioned and is movable along the inwardly-positioned bearing of the upper rail of the second rail set of the middle frame assembly; the bottom rail of each of the first rail and second rail sets includes an outwardly-positioned bearing; the at least one roller rotatably attached to the first side bar of the bottom frame assembly is inwardly-positioned and is rotatable along the outwardly-positioned bearing of the lower rail of the first rail set of the middle frame assembly and the at least one roller rotatably attached to the second side bar of the bottom frame assembly is inwardly-positioned and is rotatable along the outwardly-positioned bearing of the lower rail of the second rail set of the middle frame assembly; the selective stop mechanism further includes a rod that when moved pivots a bracket that is attached to the stop pin to selectively move the stop pin into and out of any of the one of each of the plurality of periodically spaced holes of the stop arm; a top deck attached to the top frame assembly; the first latch assembly includes a spring attached to the hook to bias the hook toward the downward latching direction; and the second latch assembly includes a spring attached to the hook to bias the hook toward the upward latching direction. 
     Another illustrative embodiment of the present disclosure provides a bedslide assembly for use on a deck bed of a pickup truck. The bedslide assembly comprises a bottom frame assembly, middle frame assembly, and top frame assembly. The bottom frame assembly includes a first latch bracket and a second latch bracket. The middle frame assembly includes a first latch assembly and a second latch assembly. The first latch assembly includes a hook biased towards a latching direction. The second latch assembly includes a hook biased towards a latching direction. The top frame assembly includes an end plate. The hook of the first latch assembly is selectively engageable with the first latch bracket of the bottom frame assembly. The hook of the second latch assembly is selectively engageable with the end plate of the top frame assembly. 
     In the above and other embodiments, the tonneau cover may further comprise: the bottom frame assembly further comprises a stop arm extending within the bottom frame assembly wherein the stop arm includes a plurality of periodically spaced holes; the top frame assembly further comprises a selective stop mechanism that includes a stop pin that selectively engages any one of the plurality of periodically spaced holes of the stop arm to limit movement of the top frame assembly; the stop pin that selectively engages the one of each of the plurality of periodically spaced holes of the stop arm limits both movement of the top frame assembly and middle frame assembly with respect to the bottom frame assembly; the middle frame assembly includes a stop member; the top frame assembly includes a stop member; the middle frame assembly includes a full extension stop bracket that is selectively engagable with the stop member of the top frame assembly; the stop member of the middle frame assembly is engagable with the second latch bracket of the bottom frame assembly; the hook of the first latch assembly is disengagable from the first latch bracket of the bottom frame assembly when the first latch assembly is struck by the endplate of the top frame assembly; and the hook of the second latch assembly is disengagable from the endplate of the top frame assembly when the second latch assembly is struck by the second latch bracket of the bottom frame assembly. 
     Additional features and advantages of the bedslide assembly will become apparent to those skilled in the art upon consideration of the following detailed descriptions of carrying out the bedslide assembly as presently perceived. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The concepts described in the present disclosure are illustrated by way of example and not by way of limitation in the accompanying figures. For simplicity, and clarity of illustration, elements illustrated in the figures are not necessarily drawn to scale. For example, the dimensions of some elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference labels may be repeated among the figures to indicate corresponding or analogous elements. 
         FIG.  1    is a perspective view of a bedslide assembly with the bedslide deck located in its retracted position; 
         FIG.  2    is a perspective view of the bedslide assembly with the bedslide deck extended from the bottom frame; 
         FIG.  3    is a perspective view of a bottom frame assembly; 
         FIG.  4    is a perspective view of a middle frame assembly; 
         FIG.  5    is a perspective view of a top frame assembly; 
         FIG.  6    is a perspective view of a slide deck; 
         FIG.  7    is a perspective view of the bedslide assembly extended to a full extension; 
         FIG.  8    is a perspective view of the bedslide assembly partially retracted; 
         FIG.  9    is another perspective view of the bedslide assembly further recessed from that shown in  FIG.  8   ; 
         FIG.  10    is another perspective view of the bedslide assembly further retracted than that shown in  FIG.  9   ; 
         FIG.  11    is another perspective view of the bedslide assembly at full retraction similar to that shown in  FIG.  1   ; 
         FIG.  12    is a perspective detail view of latching assemblies of the bedslide assembly which is retracted to the extent similarly shown and  FIG.  9   ; 
         FIG.  13    is a detail perspective view of a portion of bedslide assembly partially exploded with the endplate removed for demonstrative purposes; 
         FIG.  14    is a perspective detail partial cutaway view of a portion of the bedslide assembly; 
         FIG.  15    is another detail cutaway view of a portion of the bedslide assembly; and 
         FIG.  16    is another detail partially cutaway view of a portion of the bedslide assembly. 
     
    
    
     Corresponding reference characters indicate corresponding parts throughout the several views. The exemplification set out herein illustrates embodiments of the bedslide assembly, and such exemplification is not to be construed as limiting the scope of the bedslide assembly in any manner. 
     DETAILED DESCRIPTION OF THE DRAWINGS 
     The figures and descriptions provided herein may have been simplified to illustrate aspects that are relevant for a clear understanding of the herein described devices, systems, and methods, while eliminating, for the purpose of clarity, other aspects that may be found in typical devices, systems, and methods. Those of ordinary skill may recognize that other elements and/or operations may be desirable and/or necessary to implement the devices, systems, and methods described herein. Because such elements and operations are well known in the art, and because they do not facilitate a better understanding of the present disclosure, a discussion of such elements and operations may not be provided herein. However, the present disclosure is deemed to inherently include all such elements, variations, and modifications to the described aspects that would be known to those of ordinary skill in the art. 
     An illustrative embodiment of the present disclosure provides a bedslide assembly that is attached to the deck floor of the truck bed and is extendable and retractable relative thereto. For example, the bedslide may be slid onto the deck floor and contained within the truck bed. Conversely, the bedslide may be pulled out of the truck bed not unlike a drawer may be pulled out of a cabinet. 
     As part of the illustrative disclosure herein, the disclosed bedslide assembly includes a middle frame locking latch system that selectively secures the middle frame with respect to the remaining assembly depending on the position of the bedslide and the direction the bedslide is moving. 
     A perspective view of a bedslide assembly  2  with the bedslide deck  4  located in its retracted position is shown in  FIG.  1   . Here, bedslide deck  4  is located over the frame members positioned over the deck floor (not shown) of a truck bed as well. A handle  6  is attached to top frame assembly  8 . By holding handle  6 , bedslide assembly  2  may be pulled into an extended position or pushback to a retracted position in the truck bed. 
     To that end, a perspective view shown in  FIG.  2    depicts the bedslide deck  4  extended from a bottom frame assembly  10  which will be attached to a truck bed deck floor (not shown). As a consequence, the bedslide deck may be extended out from the deck floor of the truck bed. Also shown in this view is middle frame assembly  12  which provides further extension of bedslide deck  4  from the truck bed. In this way, contents to be placed in the truck bed may be placed on bedslide deck  4  that may be either extended out from the truck bed or retracted back into the truck bed for easier access. 
     A perspective view of bottom frame assembly  10  is shown in  FIG.  3   . Bottom frame assembly  10  includes a stop arm  14  extending from a backplate  16  and through at least a portion of bottom frame assembly  10 . Bounding bottom frame assembly  10  also includes illustrative side panels  18  and  20 , with each including a attachment flange  22  for securing to the deck floor of the truck bed. Cross members  24 ,  26 ,  28 , and  30  are shown spaced apart from each other and extending transverse and attaching to side panels  18  and  20 . A latch bracket  32  is located on cross member  26  on one lateral side of stop arm  14  as shown. A flange latch bracket  34  includes an upwardly extending bracket flange  36 . In the illustrated embodiment, flange latch bracket  34  is located on a lateral opposing side of cross member  26  from latch bracket  32 . As further shown with respect stop arm  14 , it includes periodicly spaced apart holes  38 ,  40 , and  42  which will be stopping points along the path of travel for the bedslide deck  4 . Tab  44  extends from an end of stop arm  14  and assists directing stop pin to slide along stop arm  14 . A plurality of rollers  46  are rotatably attached to side panels  18  and  20  as shown to allow middle frame assembly  12  to slide back and forth in directions  48  and  50  relative thereto. 
     A perspective view of the middle frame assembly  12  is shown in  FIG.  4   . Middle frame assembly  12  includes longitudinally extending lower rails  51  and  52  and spaced apart longitudinally extending upper rails  54  and  56 . As shown, upper rails  54  and  56  are stacked onto lower rails  51  and  52 , respectively. Lower rails  51  and  52  are sized to receive rollers  46  located on side panels  18  and  20 , respectively, to allow middle frame member  12  to slide with respect to bottom frame assembly  10  in directions  48  and  50  (see, also,  FIGS.  7    though  11 ). Illustratively, the rails are C-shaped bearing members with longitudinally extending lower rails  51  and  52  directed outwardly and longitudinally extending upper rails  54  and  56  directed inwardly. It will be appreciated by the skilled artisan upon reading this disclosure that middle rail assembly  12  is movable with respect to the bottom frame assembly  10  and top frame assembly  8  is movable with respect to middle frame assembly  12 . 
     Cross members  58  and  60  are spaced apart from each other and extend laterally between lower rails  51  and  52  as illustratively shown to keep same spaced apart. A stop bracket  62  that includes an illustrative upward-extending flange  63  is attached to cross member  60 . An end cross member  64  also spaced apart from cross members  58  and  60 , extend between rails  51  and  52 . End cross member  64  includes a latch assembly  66 , opening  68 , another latch assembly  70 , and a safety stop  72 . Latch assembly  66  is illustratively fitted in an illustrative U-shaped bracket  74  and includes a downward depending hook  76  pivotably attached to a paddle  78 . It is appreciated that downward depending hook  76  and paddle  78  are pivotally biased, and in this illustrative case in a downward direction to a hooking position. Conversely, latch assembly  70  though also contained in a U-shaped bracket  80  includes an upwardly extending hook  82  with a paddle  84  that is spring biased in an upward direction. Stop  72  in an illustrative embodiment includes a pivotably attached stop bar  86  that is configured to provide a stop barrier when middle frame assembly  12  is moved in one direction but not in another. Also, stop pads  88  and  90  are illustratively located on end cross member  64  so that top frame assembly  8  does not damage any of the structures on end cross member  64 . 
     A perspective view of top frame assembly  8  is shown in  FIG.  5   . This top frame assembly  8  includes handle  6  to assist an operator to push or pull the top frame assembly toward or away from the truck bed in directions  50  and  48  (see, also,  FIGS.  7  through  11   ). Illustrative front panel  92  is attached to spaced apart and longitudinally extending side frame members  94  and  96 . Handle  6  is illustratively attached to front panel  92 . A plurality of rollers  98  are each spaced apart from each other and regularly placed on the exterior of side frame members  94  and  96  as illustratively shown. In this illustrative embodiment, outwardly extending rollers are configured to fit into upper rails  54  and  56  of middle frame assembly  12  so that top frame assembly  8  is movable along and with respect to middle frame assembly  12 . Cross members  100 ,  102 ,  104 , and  106  are spaced apart from each other and each connected to side frame members  94  and  96 . An end plate  108  is illustratively located at the end of side frame members  94  and  96  opposite front panel  92 . A stop member  110  is attached to endplate  108 . Illustratively, stop member  110  includes a stop bar  112  pivotably attached to endplate  108  via bracket  114 . In an illustrative embodiment, stop bar  112  is pivotable in one direction but not appreciably in another direction so as to not interfere with movement of top frame assembly  8  in one direction but limit the range of movement in another direction. Endplate  108  also includes pass-through opening  116  to not interfere with latch assembly  66  or stop arm  14 . 
     Also included with the top frame assembly  8  is selected stop assembly  118  which is configured to selectively stop top frame assembly  8  with respect to the other frame assemblies. Illustratively stop assembly  118  may include a longitudinally extending rod  120  that extends from plate  102  to a stop mechanism  122 . Brackets  124  and  126  suppot longitudinally extending rod  120  and allow same to illustratively move in directions  128  and  130 . A grip  132  is attached to longitudinally extending rod  120  which is disposed through front panel  92  so that an operator may move rod  182  and either directions  128  and  130 . Stop mechanism  122  is illustratively configured to translate movement in directions  128  and  130  into transverse movement of a stop pin  134  in directions  136  and  138 . In this illustrative embodiment, longitudinally extending rod  120  is movably attached to a bracket  140  at pivot  141  that is also attached to a pivot pin  142  spaced apart pivot  141 . Bracket  140  is pivotally attached to stop pin  134  at pivot pin  144 . Stop pin  134  is also disposed through a bracket  146  that is secured to endplate  108 . The net effect is that as longitudinally extending rod  120  is pulled in direction  128 , bracket  140  is pivoted about pivot pin  142  thereby moving bracket  140  which also moves stop pin  134 . Because stop pin  134  is held by bracket  146 , movement of stop pin  134  is limited to moving in either directions  130  or  128 . In an illustrative embodiment, a spring can bias longitudinally extending rod  120  in direction  130 . In other words, unless a force is applied to longitudinally extending rod  120  in direction  128 , it will bias toward direction  130 . Similarly, a same spring or different spring can act on stop pin  134  and bias it in direction  136 . This means that unless a force from bracket  140  is applied to stop pin  134  in direction  138 , the spring bias will move stop pin  134  in direction  136 . The net result of this is without an opposing force applied to selective stop assembly  118 , stop pin  134  will remain extended in direction  136 . Lastly, with respect to endplate  108 , it includes a latching flange  148  configured to selectively engage upwardly extending hook  82  of latching assembly  70  of middle frame assembly  12 . 
     A perspective view of bedslide deck  4  is shown in  FIG.  6   . It is contemplated that bedslide deck  4  will attach to side frame members  94  and  96  of top frame assembly  8  via fastener holes  150 . Accordingly, bedslide deck  4  will move in concert with top frame assembly  8 . In this illustrative embodiment, railings  152  are placed about the periphery of top frame assembly  8 . 
     Perspective views of bedslide assembly  2  positioned between 100% extension and 0% extension are shown in  FIGS.  7 ,  8 ,  9 ,  10 , and  11   . The view in  FIG.  7    shows bedslide assembly  2  at full 100% extension (slide deck  4  has been removed for demonstrative purposes). Here, the 100% extension is defined by the limit of movement between the middle frame assembly  12  and top frame assembly  8 . In this position, rollers  98  are movable within upper rails  54  and  56  of middle frame assembly  12 . The extent to which top frame assembly  8  extends from middle frame assembly  12  is limited by stop bar  112  of stop member  110  engaging upward-extending flange  63  of stop bracket  62 . Because of the blocking created by these structures, top frame assembly  8  cannot move any further in direction  48  with respect to middle frame assembly  12 . Likewise, stop bar  86  of safety stop  72  engages bracket flange  36  of flange latch bracket  34  on bottom frame assembly  10 . This limits the extent to which middle frame assembly  12  can travel in direction  48  toward the extended position with respect to bottom frame assembly  10 . In other words, by these structures the full extent to which each of middle frame assembly  12  and top frame assembly  8  can extend from a truck bed deck have been reached. 
     In addition, downward depending hook  76  of latch assembly  66  attached to end cross member  64  is engaged with latch bracket  32  on cross member  26  of bottom frame assembly  10 . With this latching, middle frame assembly  12  is coupled to bottom frame assembly  10 . This means that middle frame assembly  12  will not move with respect to bottom frame assembly  10  until an action causes latch assembly  66  to disengage from latch bracket  32 . 
     Pushing top frame assembly  8  inward as shown in the perspective view of bedslide assembly in  FIG.  8    causes bedslide assembly  2  to retract in direction  50  towards bottom frame assembly  10  and the truck bed. In this case, middle frame assembly  12  is latched to bottom frame assembly  10 . Those two frames will not move with respect to each other while top frame assembly  8  is moving in direction  50 . The net effect is that when moving the bedslide assembly  2  in the push direction (i.e., direction  50 ), only top frame assembly  8  will be moving at that time. Furthermore, top frame assembly  8  is free to move in either directions  48  or  50  alone with middle frame assembly  12  and bottom frame assembly  10  secured in place. 
     When bedslide assembly  2  is located at the about 50% extension position as shown in  FIG.  9   , end plate  108  of top frame assembly  8  engages latch assembly  66  of middle frame assembly  12 . When this happens, endplate  108  strikes paddle  78  of latch assembly  66  (see, also,  FIG.  16   ) which pushes downward depending hook  76  upwards releasing it from latch bracket  32 . In addition, because upwardly extending hook  82  of latch assembly  70  is directed upward, it will engage latching flange  148  on endplate  108 . The latching between top frame assembly  8  and middle frame assembly  12  essentially connects them together. 
     Further, the 50% extension is an illustrative stop position for stop arm  14 . As shown, stop pin  134  is extended into hole  38  disposed through stop arm  14 . If needed, tab  44  helps direct stop pin  134  to move along stop arm  14 . It is appreciated that stop pin  134  is biased in direction  136 . As stop pin  134  is moved along stop arm  14  there is enough bias force in direction  138  to push stop pin  134  in direction  138  by stop arm  14  until stop pin  134  reaches hole  38 . At this point the force against the directional bias in  136  is relieved thus allowing stop pin  134  to move back with the directional bias  136  and be disposed in hole  38 . When this happens, top frame assembly  8  is now held in place with respect to bottom frame assembly  10 . Therefore, at this 50% extension position both top frame assembly  8  and middle frame assembly  12  are held together and top frame assembly  8  is held with respect to bottom frame assembly  10 . Top frame assembly  8  will not be able to move again until grip  132  pulls longitudinally extending rod  120  in direction  128  again to actuate bracket  140  to move stop pin  134  in direction  138  away from the direction of bias  136  thereby pulling longitudinally extending rod  120  to pivot bracket  140  with sufficient force against bias in direction  136  to be overcome and move stop pin  134  in direction  138  to release stop pin  134  from hole  38  in stop arm  14 . Upon this actuation, however, top frame assembly  8  and middle frame assembly  12  are able to further move in concert in either directions  48  and  50 . 
     Further travel of top frame assembly  8  and middle frame assembly  12  together in direction  50  toward backplate  16  of bottom frame assembly  10  continues until stop pin  134  engages hole  40  disposed in stop arm  14  of bottom frame assembly  10  as shown in  FIG.  10   . Both top frame assembly  8  and middle frame assembly  12  were moving together but now with stop pin  134  being held by stop arm  14  both frame assemblies can no longer move with respect to bottom frame assembly  10 . This is a predesignated 25% extension. As previously described with respect to hole  38  of stop arm  14 , in order to move top frame assembly  8  and middle frame assembly  12  any further, grip  132  needs to pull longitudinally extending rod  120  in direction  128  again to actuate bracket  140  to pivot and pull stop pin  134  in direction  138  away from the direction of bias  136  to remove stop pin  134  from hole  40 . When this happens, top frame assembly  8  may continue to move in direction  48  or  50 . 
     When top and middle frame assemblies  8  and  12 , respectively, travel further in direction  50  stop pin  134  eventually engages hole  42  in stop arm  14  to 0% extension as shown in  FIG.  11   . Here, both top frame assembly  8  and middle frame assembly  12  are fitted in bottom frame assembly  10  representing full retraction. Like described with respect to hole  38  and hole  40  of stop arm  14 , stop pin  134  holds all the frame assemblies together until grip  132  pulls longitudinally extending rod  120  in direction  128  to move bracket  140  which holds stop pin  134  in direction  138  against bias direction  136  to remove stop pin  134  from hole  42 . 
     When it is desired to pull bedslide assembly  2  in order to extend same, grip  132  is pulled as previously discussed to remove stop pin  134  from hole  42 . When this occurs, top frame assembly  8  is now free to move in direction  48 . Because the upwardly extending hook  82  of latch assembly  70  is still engaged with latching flange  148  on endplate  108 , top frame assembly  8  will pull middle frame assembly  12  with it in direction  48  to an extended position. This movement of both frame assemblies may continue until stop pin  134  reaches hole  40  at which point both frame assemblies will be stopped with respect to bottom frame assembly  10 . By again, pulling grip  132  in direction  128  to release stop pin  134  from hole  40  as previously described, top frame assembly  8  and middle frame assembly  12  are free to move in direction  48  again. This freedom of movement in direction  48  towards an extended position may continue until stop pin  134  engages hole  38  in stop arm  14 . At this point both top frame assembly  8  and middle frame assembly  12  are held in place at about 50% extension such as that shown in  FIG.  9   . At this point however, when stop pin  134  is removed from hole  38  and top frame assembly  8  continues to move position, endplate  108  no longer exerts a force upon downward depending hook  76  of latch assembly  66 . This causes hook  76  (because of bias force) to move and engage latch bracket  32  on cross member  26  of bottom frame assembly  10 . Bracket flange  36  of flange latch bracket  34  also attached to cross member  26  of bottom frame assembly  10  strikes paddle  84  of latch assembly  70  to pivot upwardly extending hook  82  releasing same from latching flange  148 . Additionally, stop bar  86  of safety stop  72  on middle frame assembly  12  will engage bracket flange  36  of flange latch bracket  34  on cross member  26  to prevent middle frame assembly  12  from moving any further in direction  48  from this point. This has the effect of the releasing top frame assembly  8  from middle frame assembly  12  while holding middle frame assembly  12  onto bottom frame assembly  10 . At this point, top frame assembly  8  is able to continue moving in direction  48  toward positions such as that shown in  FIG.  8    without middle frame assembly moving any further in direction  48 . Top frame assembly  8  may continue moving in direction  48  until stop bar  112  engages upward extending flange  63  of stop bracket  62  on middle frame assembly  12 . At this point top frame assembly  8  will be that 100% extension as shown in  FIG.  7   . It is further appreciated that by continually pulling longitudinally extending rod  120  in direction  128  bracket  140  holds stop pin  134  in direction  138  against bias direction  136  in order to hold stop pin  134  from any of holes  38 ,  40 , and  42 . This allows bedslide assembly  2  to move in either directions  48  or  50  freely through its permissable range of motion 
     Perspective detail views of the endplate  108  and latch assemblies  66  and  70  of bedslide assembly  2  located at about the 50% extension position are shown in  FIGS.  12 ,  13 , and  14   . The difference between the  FIGS.  12  and  13    is that endplate  108  is shown installed on top frame assembly  8  in  FIG.  12   , where it is removed for demonstrative purposes in  FIG.  13   . The detail view in  FIG.  14    is a partial cutaway view to show how both endplate  108  of top frame assembly  8  and latch assembly  70  interact with flange latch bracket  34  on cross member  26  of bottom frame assembly  10 . 
     At the 50% extension shown in  FIGS.  12  and  13   , stop pin  134  of stop mechanism  122  is engaged with hole  38  in stop arm  14  (see, also,  FIG.  9   ). At this stage, upwardly extending hook  82  is not yet engaged with latching flange  148  on endplate  108 . Latch assembly  66  has been engaged by endplate  108  by striking paddle  78  detaching middle frame assembly  12  from bottom frame assembly  10  when stop pin  134  is released from stop arm  14 . Top frame assembly  8  is movable in the push direction  50  so latching flange  148  of endplate  108  will engage upwardly extending hook  82  of latch assembly  70  (see, also,  FIG.  14   ), pivoting upwardly extending hook  82  in direction  152  toward latching flange  148  of endplate  108  and gripping to same. Thus, it&#39;s between the 50% and 25% extension, that when pushing top frame assembly  8 , middle frame assembly  12  is not only released from bottom frame assembly  10 , but is then latched onto top frame assembly  8 . This is how both top frame assembly  8  and middle frame assembly  12  move together between 0% and 50% extension (whether pushing or pulling). 
     Additionally, because endplate  108  on top frame assembly  8  releases downward depending hook  76  of latch assembly  66 , middle frame assembly  12  is free from bottom frame assembly  10  and is movable with top frame assembly  8  between the 50% and 0% extension. It is noted that when middle and top frame assemblies  12  and  8  move in the pull direction  48  (see, e.g.,  FIG.  14   ), when latch assembly  66  contacts latch bracket  32  bottom frame assembly  10  and middle frame assembly  12  are held together. 
     Further, at about the same time (or just before), flange latch bracket  34  will engage latch assembly  70  releasing its upwardly extending hook  82  from latching flange  148  of endplate  108  so that subsequent movement of top frame assembly  8  in the pull direction  48  releases middle frame assembly. Top frame assembly  8  is now moving alone without middle frame assembly  12  moving with it. Again, this is because middle frame assembly  12  is held by bottom frame assembly  10  by virtue of latch assembly  66  engaging latch bracket  32 . As such, when moving bedslide assembly  2  in the pull direction  48  extending from the truck bed, only top frame assembly  8  (with bedslide deck  4  attached thereto) is being moved within that range. Middle frame assembly  12  remains stationary through that range of movement. It is noteable that upwardly extending hook  82  and paddle  84  are attached to spring  154  to bias upwardly extending hook  82  to flange  148 . 
     Also shown in this view is stop member  110  that includes stop bar  112  pivotably attached to U-shape bracket  114  located on endplate  108  of top frame assembly  8 . Stop bar  112  is pivotable with respect to endplate  108  so that as top frame assembly  8  moves in direction  50  stop bar  112  can pivot out of the way and not serve as an obstruction. Conversely, however, when top frame assembly  8  moves in direction  48 , any obstructions such as upward extending flange  63  of stop bracket  62  (see, also,  FIG.  7   ) limit top frame assembly  8  in its movement in that direction. 
     Detail cutaway perspective view of latch assembly  66  and latch bracket  32  on middle and bottom frame assemblies  12  and  10 , respectively, are shown in  FIGS.  15  and  16   . It is appreciated from these views that, when the top frame assembly  8  is moved in the pull direction  48 , endplate  108  does not engage latch assembly  66 . Instead, latch assembly  66  is spring-loaded or biased so that, as middle frame assembly  12  is moved in pull direction  48 , downward depending hook  76  will pass over latch bracket  32 , and then bias engagement thereto secures latch assembly  66  to latch bracket  32 . The result is that middle frame assembly  12  is now coupled to bottom frame assembly  10  keeping both stationary with respect to each other. 
     On the return push direction  50 , as previously discussed, endplate  108  strikes paddle  78  of latch assembly  66  lifting downward depending hook  76  from latch bracket  32 . This allows middle frame assembly  12  to be movable with respect to the bottom frame assembly  10 . And again, it is appreciated that by virtue of the coupling between latch assembly  70  and latching flange  148  of endplate  108  of top frame assembly  8 , top and middle frame assemblies  8  and  12  will move together in push direction  50 . Indeed, top and middle frame assemblies  8  and  12  will move together in both the push and pull directions  50  and  48  between 0% and 50% extension. Other structures shown in this view include stop member  110  with stop bar  112  pivoting with respect to U-bracket  114 . Also stop arm  14  is shown including tab  44  and stop pin  134  illustratively disposed in hole  38 . 
     In the drawings, some structural or method features may be shown in specific arrangements and/or orderings. It should be appreciated, however, that such specific arrangements and/or orderings may not be required. Rather, in some embodiments, such features may be arranged in a different manner and/or order than shown in the illustrative figures. Additionally, the inclusion of a structural or method feature in a particular figure is not meant to imply that such feature is required in all embodiments and, in some embodiments, may not be included or may be combined with other features. It should also be appreciated that, to the extent any subject matter disclosed in this non-provisional patent document conflicts with the priority application, the disclosure from this non-provisional patent document controls.