Abstract:
A device for extending the storage bed of a vehicle and creating a storage receptacle at multiple locations on top of the storage bed. Adjustable length side walls are pivotally attached to an end wall to form an open top box. Two walls pivotally attached to each other and to the end wall allow formation of a storage receptacle when desired. The adjustability of the side walls permits the open top box, whether it is used to extend the storage bed, create a storage receptacle on top of the storage bed or both, to make optimal use of the storage space between the wheel wells of the vehicle and its raised tailgate, as well as to make optimal use of the additional storage bed space created by lowering the tailgate. Storage receptacles created by the open top box may be subdivided into multiple smaller storage receptacles.

Description:
BACKGROUND  
         [0001]    Many vehicles have storage beds. One of the most common types of such a vehicle is a pickup truck having a cab with a storage bed behind it. The purpose of the vehicle storage bed is to allow storage and transportation of loads such as construction material, machinery, sporting goods, groceries and numerous other types of personal property.  
           [0002]    The vehicle storage bed is a substantially rectangular planar area defined by a front panel adjacent to the rear of the vehicle cab, two vehicle side panels and a tailgate. Typically, the vehicle storage bed has two wheel wells protruding into the storage area. The wheel wells provide space for the rear vehicle tires to rotate without interference from the vehicle storage bed. The length and width of the vehicle storage bed, the distance from the rearmost point of the wheel wells to the tailgate and the tailgate height are of standardized dimensions on most modem pickup trucks.  
           [0003]    The material desired to be transported often is too long to fit within the vehicle storage bed when the vehicle storage bed is closed by the tailgate being in the up position. Therefore, the tailgate is often lowered to permit larger loads to be carried within the vehicle storage bed. Since the tailgate is down in such a configuration a substantial risk of the load falling out resulting in property loss or physical injury is created. In addition, some types of loads, such as construction drywall, may be damaged because of the lack of vehicle bed support under a portion of the load.  
           [0004]    At times the vehicle user needs to subdivide the vehicle storage bed into smaller storage areas. For example, the user may desire to confine a bag of groceries or a bag of golf clubs to a much smaller area than the area of the vehicle storage bed. The most common locations where subdivided storage areas are desired are: between the wheel wells and a raised tailgate, over a lowered tailgate and adjacent to the vehicle cab.  
           [0005]    A number of vehicle bed extenders have been developed. Some serve the dual purposes of extending the vehicle storage bed and creating subdivided storage spaces within the storage bed. Some are foldable to provide easier storage when not in use.  
           [0006]    One of the problems common to all known devices that both extend the vehicle storage bed in one mode and provide subdivided storage spaces in another mode is that the dimensions are the same in both modes. This creates a problem because the distance between the rearmost portion of the wheel wells and the raised tailgate is usually less than the height of the tailgate. Therefore, if the device has fixed dimensions which allow it to fit between the wheel wells and the tailgate in storage mode, it will not take full advantage of the additional vehicle bed storage space created when the tailgate is down and the device is used in extender mode. To take full advantage of all vehicle bed space available between the wheel wells and the tailgate when the device is used in storage mode, and at the same time, when the device is used as a vehicle bed extender, take full advantage of the additional vehicle bed storage space created when the tailgate is down, the length of the vehicle bed storage extender along the longitudinal axis of the vehicle must be variable rather than fixed.  
           [0007]    Information relevant to attempts to address these problems can be found in U.S. Pat. Nos. 4,472,639, 4,856,840, 5,456,511, 5,458,389, 5,678,743, 5,700,047, 5,752,636, 5,775,759, 5,816,638, 5,820,188, 5,823,597, 5,902,000, 5,924,753, 6,019,410 and 6,120,076. However, each one of these references lacks one or more of the features listed in the next paragraph.  
           [0008]    There is a need for a vehicle bed storage extender with the following features. It would extend the vehicle storage bed over the entire surface area of the lowered tailgate. It would provide additional vehicle storage bed extension when it&#39;s rearmost retaining wall is lowered into a horizontal position coplanar with the vehicle storage bed. It would provide subdivided storage spaces over the entire vehicle bed storage area between the rearmost portion of the wheel wells and the raised tailgate. It would provide subdivided storage spaces over the entire additional vehicle bed space created by the lowering of the tailgate. It would provide subdivided storage spaces adjacent to the vehicle cab. It&#39;s length along the longitudinal axis of the vehicle would be variable in either storage or extender mode. It would be portable and easily storable. It would be foldable into a slim rectangular package when not in use. It would have a low manufacturing cost. It could be manufactured from a variety of materials including steel, aluminum and plastic. It would be easily installable and removable from the vehicle. It would be easily packageable for shipping. It would be one integral piece.  
         SUMMARY  
         [0009]    The present invention is directed to a device that satisfies these needs. The invention is intended for use on vehicles having a storage bed. Such vehicles have a cab which serves as a passenger compartment. The storage bed is positioned on a horizontal plane behind the cab. A vertically oriented panel is located adjacent to rear of the vehicle cab at the front of the storage bed. Two vertically oriented side panels are located along the side perimeters of the storage bed. The storage bed is enclosed by a vertically oriented tailgate located at the rear of the storage bed and the rear of each side panel. The storage bed can be opened by lowering the tailgate into a horizontal or down position.  
           [0010]    The vehicle bed storage extender comprises an end wall, two variable length side walls attached to the end wall and one or more vehicle mounts attached to each side wall. The variable length side walls are attached to the end wall such that the end wall and side walls form a three sided open top box. The open top box is sized to extend the bed of the vehicle when the tailgate of the vehicle is down. This is accomplished by securing the open top box over the tailgate with the end wall being positioned over the rear of the tailgate.  
           [0011]    The variable length walls can be adjusted to permit the open top box to be positioned between a raised tailgate and wheel wells protruding into the storage bed. In this configuration the end wall is oriented forward of the side walls and the tailgate. Thus a storage area is created on top of the storage bed between the wheel wells and the tailgate. Since the distance between the wheel wells and the tailgate is usually less than the height of the tailgate, the variable length walls permit the open top box to be sized optimally whether the device is used to extend the vehicle bed by being placed over a lowered tailgate, or whether the device is used to create a storage area on top of the storage bed. The open top box can also be used to create a storage area on top of the vehicle bed at other locations, such as adjacent to the forward panel behind the vehicle cab.  
           [0012]    The ends of the side walls which are not attached to the end wall are free. One or more vehicle mounts are attached to the free end of each side wall. The three sided open top box is secured to the vehicle by securing the vehicle mounts to the rear ends of the side panels. It can also be secured to the vehicle by securing the vehicle mounts to the panel behind the vehicle cab, thereby creating a forward storage area.  
           [0013]    The variable length side walls can be adjusted to multiple lengths. One version of the invention uses dual length side walls instead of variable length side walls. A dual length side wall is a type of a variable length side wall which can be adjusted to two predetermined lengths.  
           [0014]    Preferably, the device, known as a vehicle bed storage extender, has side walls which are pivotally attached to the end wall. This will permit the side walls to be folded into a position parallel and adjacent to the end wall, thereby forming a compact easily storable structure.  
           [0015]    Preferably, the vehicle bed storage extender further comprises a second wall and a third wall. The second wall is pivotally connected to the end wall. The second wall is sized to folding fit adjacent and parallel to the end wall. The third wall is pivotally connected to the second wall. The third wall is sized to folding fit adjacent and parallel to the second wall and the end wall. The third wall is further configured with the end wall, the second wall and the side walls to allow formation of a rectangular storage area.  
           [0016]    In another version of the invention a plurality of locking dividers are pivotally attached to the second wall. The dividers are attached such that they may be folded into a position parallel and adjacent to the second wall when their use is not desired. When the dividers are locked in a position perpendicular to the second wall they will create additional storage receptacles. Thus the single storage area created by the three sided open top box may be subdivided into additional storage receptacles.  
           [0017]    The end wall may be pivotally attached to the bottom of each side wall and detachable from the top of each side wall. This will permit the end wall to pivot into a position substantially coplanar with the vehicle tailgate when the tailgate is in its down position, thus further extending the vehicle bed when the vehicle bed storage extender is positioned over the tailgate with the end wall oriented rearward.  
           [0018]    Another version of the invention comprises two cornerposts, an end wall, two side wall assemblies and means for locking the end wall to each cornerpost when the end wall and side wall assemblies are configured as a three sided open top box. Each cornerpost has a side wall face, a back face and an end wall face. The end wall is rotatably connected to the bottoms of the end wall face of each cornerpost. The side wall assemblies are each pivotally attached to the side wall face of each respective cornerpost. Each side wall assembly comprises a first side wall subassembly, a second side wall subassembly having two vertical wall sides, one or more vehicle mounts and means for locking the first side wall subassembly to the second side wall subassembly. Each second side wall subassembly is sized and pivotally attached to a first side wall subassembly such that the side wall assembly is capable of having two distinct lengths when the end wall and side wall assemblies are configured as a three sided open top box. The vehicle mounts are attached to each vertical wall side of each second side wall subassembly. Means for locking the first side wall subassembly to the second side wall subassembly of each side wall assembly are provided to form a locked wall. Means for locking the end wall to the end wall face of each cornerpost when the end wall and side wall assemblies are configured as a three sided open top box are also provided. 
       
    
    
     DRAWINGS  
       [0019]    These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:  
         [0020]    [0020]FIG. 1 is a perspective view of a preferred embodiment of a vehicle bed storage extender.  
         [0021]    [0021]FIG. 2 is a perspective view of the vehicle bed storage extender of FIG. 1, positioned over the vehicle storage bed, oriented with its end wall forward and its folded side walls mounted to the vehicle side panels.  
         [0022]    [0022]FIG. 3 is a perspective view of the vehicle bed storage extender of FIG. 2, with its second wall, containing the third wall, folded down.  
         [0023]    [0023]FIG. 4 is a perspective view of the vehicle bed storage extender of FIG. 3, with its second wall, third wall and dividers configured to create storage receptacles.  
         [0024]    [0024]FIG. 5 is a perspective view of the vehicle bed storage extender of FIG. 1, positioned over the vehicle tailgate, oriented with its end wall rearward and its unfolded side walls mounted to the vehicle side panels.  
         [0025]    [0025]FIG. 6 is a perspective view of the vehicle bed storage extender of FIG. 5, with its second wall, third wall and dividers configured to create storage receptacles.  
         [0026]    [0026]FIG. 7 is a side elevation view of an unfolded side wall, mounted perpendicularly to a side panel of the vehicle, to show how the vehicle bed storage extender of FIG. 1 is mounted to the vehicle.  
         [0027]    [0027]FIG. 8 is a top plan view of the vehicle bed storage extender of FIG. 6.  
         [0028]    [0028]FIG. 9 is a sectional side elevation view of the vehicle bed storage extender of FIG. 8, showing a divider locked into place to create a storage receptacle. 
     
    
     DESCRIPTION  
       [0029]    The preferred embodiment of this invention is shown in FIGS. 1 through 9. The invention is intended for use on a vehicle having a storage bed  56  having a rear end  58 , two side panels  16  and a tailgate  17 . The tailgate  17  pivots between an up position and a down position. In the up position, the tailgate is secured to the two side panels of the vehicle storage bed to form an open top box configuration with the storage bed side panels and a panel adjacent to the rear of the vehicle cab. In the down position, the tailgate  17  forms a rearward extension of the storage bed as shown in FIG. 2.  
         [0030]    A primary element of the vehicle bed storage extender is an end wall  20 . Its preferred height is the height of the vehicle side panels. It has flanges  20   a  and  20   b  along its top and two sides, respectively, sized to allow a second wall  22  and a third wall  24  to fit within it. It has a plurality of locking orifices  26  along its upper periphery for receiving locking pins.  
         [0031]    The second wall  22  is sized to fit within the end wall  20  as shown in FIG. 2. The second wall  22  has a flange  22   a  on each side. The second wall  22  is pivotally connected to the end wall  20  at the intersecting bottoms  21  of the end wall side flanges  20   b  and second wall side flanges  22   a  by a pivot pin  28  inserted at each intersecting bottom  21 .  
         [0032]    The third wall  24  is sized to fit within the second wall  22  as shown in FIG. 3. It has flanges  24   a  and  24   b  along its top and sides, respectively. The third wall  24  contains a plurality of locking orifices  32  along its upper periphery for receiving locking pins. It is pivotally connected to the second wall  22  at the points  23  where the third wall side flanges  24   b  intersect the second wall side flanges  22   a  by a pivot pin  30  inserted through the intersection points  23 , thereby permitting parallel orientation of the third wall  24  with respect to the end wall  20  as shown in FIGS. 4, 6 and  9 , permitting the third wall  24  to fold within the second wall  22  as shown in FIG. 3, and further permitting the folded third wall  24  and second wall  22  to fold within the end wall  20  as shown in FIG. 2.  
         [0033]    Two cornerposts  36  each have a side wall face  36   a,  a back face  36   b  and an end wall face  36   c.  The cornerposts are rotatably attached at their bottoms to the corresponding intersecting bottoms of the end wall  20  and second wall  22  by the end wall to second wall pivot pins  28  to allow the end wall  20  and the second wall  22  to pivot along an axis connecting the bottoms of the cornerposts  36 .  
         [0034]    The preferred embodiment includes two side wall assemblies  40 . Two first side wall subassemblies  42  each have two horizontal wall flanges  42   a  and  42   b , one vertical wall flange  42   c  and a notched wall back  42   d.  A hinge  44  is attached to each first side wall subassembly vertical wall flange  42   c  and to the side wall face of each corresponding cornerpost  36   a , permitting each side wall assembly  40  to fold into a position adjacent to the end wall  20 . Each hinge  44  also permits each first side wall subassembly  42  to be positioned perpendicular to the end wall  20 . Two second side wall subassemblies  46  each have two horizontal wall flanges  46   a  and  46   b  and two vertical wall flanges  46   c  and  46   d.  Each second side wall subassembly  46  is sized to fold within a first side wall subassembly  42 . Each second side wall subassembly  46  contains locking orifices  48  to receive locking pins  50  mounted to each upper corner of the third wall  20 . Each second side wall subassembly  46  is pivotally connected to a first side wall subassembly  42  by a pin  47  such that the second side wall subassembly  46  may be pivoted to fold within the first side wall subassembly  42 . The second side wall subassembly locking orifices  48  are positioned to permit stabilization of the third wall  24  irrespective of whether the second side wall subassembly  46  is in an open or closed position. Two vehicle mounts  52  and a locking bracket  80  are attached to the first vertical wall flange  46   c  of each second side wall subassembly  46 . The locking bracket  80  is used to lock the vehicle storage bed extender to the vehicle. The notches within the wall back  42   d  of the first side wall subassembly  42  are sized to accept the vehicle mounts  52  and locking bracket  80  whereby each second side wall subassembly  46  may rotate into an open or closed position with respect to the attached first side wall subassembly  42  without interference between the first side wall subassembly  42  and the vehicle mounts  52  attached to the second side wall subassembly  46  or interference between each first side wall subassembly  42  and the locking bracket  80 . Two vehicle mounts  52  and a locking bracket  80  are similarly attached to the second vertical wall flange of each second side wall subassembly  46   d.  The distance from the back face of each cornerpost  36   b  to the distal end of each first vertical wall flange  46   c  of the respective second side wall subassembly vehicle mount  52 , when that second side wall subassembly  46  is pivoted to fit within its respective first side wall subassembly  42  is equal to the distance between the rear end of the wheel wells  54  within the vehicle bed  56  and the end of the vehicle bed  58 . The distance from the back face of each cornerpost  36   b  to the second vertical wall flange  46   d  of the respective second side wall subassembly  46 , when that second side wall subassembly  46  is pivoted into its other position, is equal to the height of the vehicle tailgate  17 , which is also the length of the vehicle bed extension when the vehicle tailgate  17  is lowered to its down or horizontal position. Each first side wall subassembly  42  and each second side wall subassembly  46  contain means for locking the first side wall subassembly to the second side wall subassembly  60  to maintain alignment of the side wall subassemblies  42 ,  46  and to prevent relative rotation of the side wall subassemblies  42 ,  46  with respect to each other. Thus, variable length side walls are created.  
         [0035]    In this version of the invention the side walls vary between two lengths. In other words, dual length side walls, which are a type of variable length side wall, have been described. The shorter length is the optimum length of the side walls  40  when the vehicle bed storage extender is intended to be used between the wheel wells of the vehicle  54  and the vehicle tailgate  17 . This is described as storage mode below. The longer length is the optimum length of the side walls  40  when the vehicle bed storage extender is intended to be used over a lowered tailgate  17 . This is described as extender mode below.  
         [0036]    A version of the invention may also be constructed with variable length side walls which can be adjusted to any length between a set minimum length and a set maximum length. The first side wall subassembly and the second side wall subassembly would be configured to be slidable relative to one another. They would be slidable in substantially the same plane. When the desired length is obtained by sliding the first side wall subassembly relative to the second side wall subassembly, the side wall subassemblies would be secured to one another. Many methods are known for securely fixing slidable walls to one another. These include securing the walls together by way of one or more set screws, securing the walls together with clamps and securing the walls together with nuts and bolts. Products using such variable length walls are commonly available. Such products include child safety gates, animal gates and sliding doors. The use of variable length side walls in a vehicle bed storage extender allows the vehicle bed storage extender to make full use of the space between the wheel wells of a vehicle having a storage bed and the raised tailgate of the vehicle and, also, to make full use of the additional vehicle bed storage space created when the vehicle tailgate is lowered.  
         [0037]    A pair of brackets  62  are mounted to the upper comers of the end wall  20  for aligning the end wall  20  with the cornerposts  36 , limiting the pivotal movement of the end wall  20  with respect to the cornerposts  36  and limiting the movement of the cornerposts  36  with respect to the end wall  20 , the second wall  22  and each side wall assembly  40 .  
         [0038]    A locking pin bracket  64  is attached to the upper end of the back face of each cornerpost  36   b . A locking pin  66  is attached to each rear upper corner of the end wall  20  and aligned with its respective cornerpost locking pin bracket  64 , for stabilizing the end wall  20  with respect to the cornerposts  36 .  
         [0039]    A plurality of dividers  68  are pivotally attached to the inner aspect of the second wall  22  creating storage areas  70  when locked in a position perpendicular to the second wall  22 , the end wall  20  and the third wall  24 . The dividers  68  are sized to fold adjacent and parallel to the second wall  22  when not being used to create storage areas  70 . The dividers  68  are sized such that when they are so folded they permit the second wall  22  to be folded adjacent and parallel to the end wall  20  without interference from the dividers  68 . A pair of locking pins  72  are attached to the upper corner edges of each divider  68 . Each locking pin  72  is aligned with a corresponding locking pin orifice  26  on the end wall  20  or a corresponding locking pin orifice on the third wall  24  thereby allowing each divider to be locked into an upright position simultaneously perpendicular to the end wall  20 , the second wall  22  and the third wall  24 .  
         [0040]    A locking pin  50  is attached to each upper corner edge of the third wall  24 . Corresponding locking orifices  48  on each second side wall subassembly  46  are aligned with the third wall locking pins  50  such that the third wall  24  can be locked in an upright orientation perpendicular to each second side wall subassembly  46 .  
         [0041]    A latch  76  is attached to the middle of the end wall  20  for retaining the folded third wall  24  and second wall  22  within the end wall  20 .  
         [0042]    A latch  78  is mounted to each upper corner of the end wall  20  for retaining the folded side wall assemblies  40  adjacent and parallel to the end wall  20 , second wall  22  and third wall  24  when those walls are folded together.  
         [0043]    Resilient cornerpost caps  82  are attached to each end of each cornerpost  36  for protecting the vehicle bed and preventing foreign materials from entering the inside of the cornerposts  36 .  
         [0044]    A handle  84  is attached to the center of the end wall top flange  20   b  for carrying the vehicle bed storage extender.  
         [0045]    Means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  are mounted to rear ends of the side panels of the vehicle bed  16 . Preferably, each such means comprises a bracket having an upper horizontal projection, a lower horizontal projection and a middle projection as shown in FIGS. 3 and 7. The upper and lower horizontal projections have vertically oriented pins. The upper and lower horizontal projections and vertically oriented pins are shaped and positioned to mate with the vehicle mounts  52  for securing the vehicle bed storage extender to the vehicle side panels  16 . The middle projection is shaped and positioned to mate with the corresponding locking bracket  80 . The means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  will securely retain the vehicle bed storage extender to the vehicle irrespective of whether or not the vehicle bed storage extender is positioned on top of the vehicle storage bed  56  or on top of the tailgate  17 . Means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  may also be attached to the panel adjacent to the rear of the vehicle cab. This allows the vehicle bed storage extender to be mounted in the frontal area of the vehicle storage bed.  
         [0046]    Additional means for engagingly accepting and securely retaining the second side wall subassembly  46  to the vehicle are known. The vehicle side panels  16  typically have pins mounted in their upper rear areas. These pins are configured to mate with latches positioned on each upper side of the vehicle tailgate  17 . Brackets with U-shaped openings can be mounted on the upper portion of each second side wall subassembly  46  and positioned to fit over the side panel pins thereby securely retaining the vehicle bed storage extender to the vehicle after it is placed into the desired position. Another approach involves mounting spring loaded projection interlocks to each second side wall subassembly  46 . Apertures are drilled into the vehicle side panels  16  at positions aligned with the interlock projections when the vehicle bed storage extender is in a desired position. The vehicle bed storage extender is then placed into its approximate desired position. The interlock projections are then retracted, positioned to release into their respective apertures on the vehicle side panels  16  and then released, thereby securing the vehicle bed storage extender to the vehicle.  
         [0047]    Support cords  88  are attached at one end to each side of the end wall  20  and at the other end to the top of the nearest cornerpost  36  for preventing the end wall  20  from falling below the vehicle bed, for creating an access opening to the vehicle bed and for extending the vehicle bed when the vehicle bed storage extender is positioned over the tailgate  17 .  
         [0048]    The tops of the end wall  20  and the third wall  24  are fitted with means for attaching a cargo net  92 . A cargo net  90  is attached to the means for attaching a cargo net  92  for securely retaining and protecting any cargo contained within the storage areas  70 .  
         [0049]    Means for securing the vehicle bed storage extender to the vehicle are attached to the vehicle bed storage extender. In the preferred embodiment the means for securing the vehicle bed storage extender to the vehicle are comprised of two tubes with holes  94 , two L-shaped rods with holes  96  and two pins  98 . The holes in the tubes  94  and rods  96  are positioned to permit outward extension of the short arm of each rod  96  to selected positions as described below. One tube  94  is mounted to the lower end of the side wall face of each cornerpost  36   a . The long arm of each L-shaped rod with holes  96  is sized to fit within the tubes  94 . The long arm of one L-shaped rod  96  is inserted into each tube  94 . Each L-shaped rod  96  is secured to each tube  94  with a pin  98 .  
         [0050]    When the vehicle bed storage extender is positioned over the vehicle tailgate  17 , the short arm of each rod  96  is positioned to face down. The holes in each rod  96  and each tube  94  are aligned such that each rod  96  may be secured in a position wherein each L-shaped rod  36  will fit along a side of the lowered vehicle tailgate  17 , thereby preventing side to side movement of the vehicle bed storage extender.  
         [0051]    When the vehicle bed storage extender is positioned within an enclosed vehicle bed  56 , the short arm of each rod  96  is positioned to face up thereby avoiding interference with the vehicle bed  56 . The holes in each rod  96  and each tube  94  are aligned such that each rod  96  may be secured in a position wherein each L-shaped rod  36  will abut against a vehicle side panel  16 , thereby preventing side to side movement of the vehicle bed storage extender.  
         [0052]    Other means for securing the vehicle bed storage extender to the vehicle are known. For example, straps may be used to secure the vehicle bed storage extender to a lowered tailgate  17  or the vehicle storage bed  56 . Pins may also be attached to the lower periphery of the vehicle bed storage extender which are configured to fit within latches contained within the tailgate  17 .  
         [0053]    Preferably, the end wall  20 , second wall  22 , third wall  24 , first side wall subassembly  42  and the second side wall subassembly  46  are constructed from sheet metal for their frames and expanded metal. The cornerposts  36  are preferably constructed from sheet metal.  
         [0054]    The invention has five modes of operation: extender mode, open bed extension mode, extender/storage mode, storage mode and forward storage mode.  
         [0055]    [0055]FIG. 1 shows the vehicle bed storage extender when it is not in use. The dividers  68  are folded flat against the second wall  22 . The second wall  22  and the third wall  24  are folded into the end wall  20 . These walls are secured together by latch  76 . Each second side wall subassembly  46  is folded into the first side wall subassembly  42  to which it is attached. Each side wall assembly  40  is folded adjacent and parallel to the folded end wall  20 , second wall  22  and third wall  24  and secured by latch  78 . The end wall  20 , containing the second wall  22  and the third wall  24 , is secured to the cornerposts  36  by the end wall brackets  62 , the cornerpost locking pin brackets  64  and the end wall locking pins  66 .  
         [0056]    [0056]FIG. 5 shows the vehicle bed storage extender in extender mode. To use the vehicle bed storage extender in extender mode, the tailgate  17  is placed into the down position. Each side wall assembly  40  is unlatched from the folded end wall  20 , second wall  22  and third wall  24 . Each second side wall subassembly  46  is then pivoted to form a side wall of the desired length and locked to its attached first side wall subassembly  42  by each means for locking each first side wall subassembly to its attached second side wall subassembly  60 . The end wall  20 , containing the second wall  22  and the third wall  24 , remains locked to the cornerposts  36  by the end wall brackets  62 , cornerpost locking pin brackets  64  and end wall locking pins  66 . The vehicle bed storage extender is then positioned over the tailgate  17  with the end wall  20  being positioned over the rearmost portion of the lowered tailgate  17 . The second side wall assembly vehicle mounts  52  which are furthest from the cornerposts  36  are then attached to the means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  which are mounted to the side panels of the vehicle bed  16 , forming an open top box vehicle bed extension as shown in FIG. 5.  
         [0057]    The same procedure is used to employ the vehicle bed storage extender in open bed extension mode. Open bed extension mode is shown in FIG. 5 by the phantom horizontally positioned end wall  20 . After the vehicle bed storage extender is positioned into extender mode over the tailgate, the end wall  20  is unlatched from the cornerposts  36  allowing it to swing down to form an extension to the tailgate  17 . The end wall  20  is unlatched from the cornerposts  36  by pulling the end wall locking pins  66  out of the cornerpost locking pin brackets  64 . The end wall  20  is held in position and prevented from dropping below horizontal by the support cords  88 .  
         [0058]    [0058]FIG. 6 shows the vehicle bed storage extender in extender/storage mode. To use the vehicle bed storage extender in extender/storage mode, the vehicle bed storage extender is first setup in extender mode as described above. The second wall  22  and the third wall  24  are then unlatched from the end wall  20  and unfolded so that the end wall  20 , the second wall  22  and the third wall  24  form a U-shaped configuration. While in this configuration the third wall  24  is locked to the second side wall subassembly  46  by inserting the third wall locking pins  50  into the corresponding second side wall subassembly locking orifices  48 . Each divider  68  is moved into an upright position forming an individual storage compartment over the tailgate. Each divider is locked to the end wall  20  and the third wall  24  by inserting the divider locking pins  72  into the corresponding end wall locking orifices  26  and the third wall locking orifices  32 . The use of the dividers  68  is optional. Larger storage areas  70  may be created in the U-shaped configuration by leaving one or more dividers  68  in the down position.  
         [0059]    [0059]FIG. 4 shows the vehicle bed storage extender in storage mode. To use the vehicle bed storage extender in storage mode, the tailgate  17  is placed into the up position. Each side wall assembly  40  is unlatched from the folded end wall  20 , second wall  22  and third wall  24 . Each second side wall subassembly  46  is pivoted to form a side wall of the desired length and locked to its attached first side wall subassembly  42  by each means for locking each first side wall subassembly to its attached second side wall subassembly  60 . The optimum length of the side wall assembly is the length which will allow the vehicle bed storage extender, when used in storage mode, to use the maximum amount of space between the wheel wells and the raised tailgate. The second wall  22  and the third wall  24  are unlatched from the end wall  20  and unfolded so that the end wall  20 , the second wall  22  and the third wall  24  form a U-shaped configuration. While in this configuration the third wall  24  is locked to the second side wall subassembly  46  by inserting the third wall locking pins  74  into the corresponding second side wall subassembly locking orifices  48 . Each divider  68  is moved into an upright position forming an individual storage compartment  70 . Each divider is locked to the end wall  20  and the third wall  24  by inserting the divider locking pins  72  into the corresponding end wall locking orifices  26  and the third wall locking orifices  32 . The vehicle bed storage extender is positioned on the vehicle storage bed between the raised tailgate and the wheel wells, with the end wall  20  being positioned in close proximity to the wheel wells and forward of the third wall  24 . The vehicle mounts  52  which are furthest from the cornerposts  36  are attached to the means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  which are mounted to the rear ends of the side panels  16  of the vehicle bed  56 , thereby forming multiple storage compartments on the vehicle storage bed  56  between the wheel wells  54  and the raised tailgate  17 .  
         [0060]    Optionally, the vehicle bed storage extender may be used in storage mode while the second wall  22 , the third wall  24  and the dividers  68  remain folded into and latched adjacent to the end wall  20 , as shown in FIG. 2.  
         [0061]    The vehicle bed storage extender can be used in forward storage mode whenever the vehicle bed storage extender is configured in storage mode. When used in forward storage mode the vehicle bed storage extender creates a storage space at the front of the vehicle storage bed rather than between the wheel wells  54  and the raised tailgate  17 . In this configuration, the means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  are attached at the front of the vehicle storage bed. The second side wall subassembly vehicle mounts  52  which are furthest from the cornerposts  36  are then attached to the means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86  located at the front of the vehicle storage bed.  
         [0062]    When the vehicle bed storage extender is used in extender/storage mode, storage mode or forward storage mode the dividers  68  may remain lowered. If the dividers remain lowered, one larger storage compartment is created rather than multiple smaller storage compartments.  
         [0063]    The means for securing the vehicle bed storage extender to the vehicle  94 ,  96  and  98  are adjusted, as previously described, to prevent lateral movement of the vehicle bed storage extender.  
         [0064]    Whenever the vehicle bed storage extender is configured such that one or more storage compartments are created between the end wall  20  and the third wall  24 , a cargo net  90  may be attached to the means for attaching a cargo net  90  attached to the end wall  20  and the third wall  24 , thereby further securing and stabilizing any cargo placed within the storage areas.  
         [0065]    The vehicle bed storage extender is secured to the vehicle by inserting a padlock through each locking bracket  80  and the corresponding projection located near the middle of the means for engagingly accepting and securely retaining the second side wall subassembly vehicle mounts  86 , in order to prevent theft of the vehicle bed storage extender.