Abstract:
An extendable cargo bed system for land vehicles that allows operation with the cargo bed stored and out of the way during normal day to day operation of the vehicle is presented. It has particular application to pickup trucks and sport utility vehicles. The extendable cargo bed system is easily deployed by hand or actuators and includes night and brake lighting members so that it passes government highway regulations. A rear window that swings out of the way which is particularly valuable for sport utility vehicles is also offered.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    There is a need for longer cargo beds on sport utility vehicles, commonly know as SUVs, and many pickup trucks. Both of these vehicle types are being offered with large passenger areas forward. This results in a necessary shortening of the cargo bed area aft to keep the overall length of the vehicle within reason. This is so that they can be relatively easily maneuvered into and out of restricted size parking spaces and garages.  
           [0002]    A particular example is brought about by the rise in popularity of four door pickup trucks. After allowing for the passenger area forward, the length of the pickup truck cargo bed is only five feet for full size and even less for compact pickup trucks. This contrasts with the need to transport up to eight feet of cargo in many instances.  
           [0003]    The instant invention addresses the difficulties brought about by the shorting of the cargo beds of these vehicles by offering an easily deployable extension to their cargo beds. The cargo bed extension offered can be either automatically extended by use of a powered actuator or by hand.  
         SUMMARY OF THE INVENTION  
         [0004]    It is a principal object of the instant invention to provide an improved vehicle with a first cargo bed member and a second cargo bed member wherein said second cargo bed member is extendable aft beyond the first cargo bed member to thereby create a longer cargo bed for the improved vehicle.  
           [0005]    It is a related object of the invention that the second cargo bed member may slide aft from under the first cargo bed member during rearward extension of the second cargo bed member.  
           [0006]    It is another related object of the invention that the second cargo bed member extends aft in a substantially linear manner.  
           [0007]    It is another object of the invention that a lighting member may be disposed, at least in part, on the second cargo bed member and that said lighting member is deployed rearward with the second cargo bed member when the second cargo bed member is extended to its aft position.  
           [0008]    It is yet another object of the invention that the second cargo bed member is at least partially supported by an extendable slide mount.  
           [0009]    It is a directly related object of the invention that extendable slide mount be comprised of two or more sliding elements.  
           [0010]    It is another related object of the invention that at least two of the sliding elements be separated by ball bearings.  
           [0011]    Yet a further related object of the invention is that one of the slide elements may be mechanically fixed in position relative to the first cargo bed member.  
           [0012]    Another object of the invention is that a supporting device be in mechanical communication with both the first cargo bed member and the second cargo bed member where said supporting member adds support to the first cargo bed member.  
           [0013]    It is a directly related object of the invention that the supporting device be, at least in part, a rolling element.  
           [0014]    Another object of the invention is that, on average and when the vehicle is on a horizontal surface, the cargo supporting bed surface of the first cargo bed member is higher than the cargo supporting bed surface of the second cargo bed member.  
           [0015]    It is still another object of the invention that a cargo tailgate member be in mechanical communication with the second cargo bed member and move forward and aft with the second cargo bed member.  
           [0016]    Yet another object of the invention is that a main bumper member be in mechanical communication with the second cargo bed member and move forward and aft with the second cargo bed member.  
           [0017]    A directly related object of the invention is that a supporting bumper member be proximal to the main bumper member when the second cargo bed is retracted.  
           [0018]    Another object of the invention is that an actuator system be provided to supply the forces for movement of the second cargo bed member.  
           [0019]    A directly related object of the invention is that the actuator system include a motor that drives a pinion gear that in turn drives a rack gear that is in mechanical communication with the second cargo bed member.  
           [0020]    Yet still another object of the invention is that a rear window of the vehicle may swing upward and forward over a portion of a passenger compartment of the vehicle.  
           [0021]    Another object of the invention is that a rear window of the vehicle may swing downward and forward into an internal roof portion of a passenger compartment.  
           [0022]    Still another object of the invention is that when the second cargo bed is extended aft that it enlarges the overall cargo bed length by at least 40 percent.  
           [0023]    A further object of the invention is that by extending the second cargo bed aft the overall cargo bed length is enlarged by at least 65 percent.  
           [0024]    Still another object of the invention is that by extending the second cargo bed aft the overall cargo bed length is enlarged by at least 90 percent.  
           [0025]    A further object of the invention is that the inventive vehicle is a pickup truck.  
           [0026]    Yet another object of the invention is that the inventive vehicle is a SUV.  
           [0027]    Another object of the invention is that the second cargo bed member have a tailgate disposed proximal its aft end.  
           [0028]    A further object of the invention is that the improved vehicle be a SUV having a cargo bed member wherein said cargo bed member is extendable aft beyond the passenger compartment of the SUV to thereby create an exposed cargo bed for the SUV and said cargo bed member having a tailgate disposed proximal its aft end. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0029]    [0029]FIG. 1 presents a perspective view of an instant invention pickup truck with the extendable cargo bed retracted.  
         [0030]    [0030]FIG. 2 is the same perspective view as given in FIG. 1 but with the instant invention extendable cargo bed in its rearmost position.  
         [0031]    [0031]FIG. 3 is a similar perspective view of a vehicle to the instant invention as given in FIG. 2 but in this case it is a SUV. Note that the tailgate is shown lowered in this figure.  
         [0032]    [0032]FIG. 4 presents a partial cutaway view of a rear part of the passenger compartment of the SUV shown in FIG. 3. In this instance, the rear window is rotated upward to move it out of the way when cargo is to be carried and/or when more air movement is desired.  
         [0033]    [0033]FIG. 5 is a similar partial cutaway view to that presented in FIG. 4, however, in this case the rear window is rotated inward and upward to move it out of the way.  
         [0034]    [0034]FIG. 6 presents a transverse cross section, as taken through line  6 - 6  of FIG. 9, of the pickup truck cargo beds. Shown are rollers that help support the stationary first cargo bed and sliding elements that support the second, moveable in relation to the pickup truck, cargo bed. Also shown is an actuator motor that provides force for inward and outward extension of the second cargo bed.  
         [0035]    [0035]FIG. 7 is an enlarged section of a portion of FIG. 6 that shows in more detail a first cargo bed support roller, second cargo bed support side elements, and pinion and rack gears and their drive actuator motor.  
         [0036]    [0036]FIG. 8 shows a portion of a cross section, as taken through line  8 - 8  of FIG. 6, that shows a pinion gear and the rack gear that it drives. The rack gear is attached to the second cargo bed so it travels in and out with the second cargo bed.  
         [0037]    [0037]FIG. 9 presents a cross section, as taken through line  9 - 9  of FIG. 6, that shows the second cargo bed in its retracted position The tailgate is shown in its closed up position with a dashed outline of the tailgate illustrating its down position also given. Elements of the preferred embodiment slide members that support the second cargo bed are also shown. Note that FIGS. 9 and 10 show the cargo beds only and none of the passenger compartments of the inventive improved motorized land vehicle.  
         [0038]    [0038]FIG. 10 gives a cross section, as taken through line  10 - 10  of FIG. 6, that presents the second cargo bed in its extended position which provides maximum cargo bed length. 
     
    
     DETAILED DESCRIPTION  
       [0039]    [0039]FIG. 1 shows the inventive improved motorized land vehicle  47  which in this illustration is a pickup truck  30 . Shown are a first cargo bed  32 , tailgate  34 , lights  41 , and bumper  40 . The appearance here is, of course, the same as a standard commercially available pickup. In this case it has an extremely long passenger cabin due to the four-door configuration.  
         [0040]    [0040]FIG. 2 presents the same view as that presented in FIG. 1 but with the second cargo bed  33  extended. An additional item to note here is the resilient bumper backup member  42  that engages the bumper  40  when the second cargo bed  33  is retracted. Further, it is defined here that the overall length of the cargo bed can be extended by at least 40 percent, with at least 65 percent, and even at least 90 percent extensions in length possible. It is also to be noted that while a fixed position first cargo bed and a moveable in relation to the vehicle second cargo bed are shown that more than two cargo beds may be utilized. Further, the first cargo bed can have at least some movement in relation to the vehicle if that facilitates the manufacturing and/or use of the invention.  
         [0041]    [0041]FIG. 3 is a similar perspective view of a motorized land vehicle  47  as presented in FIG. 2 but in this case it is a SUV  31 . Note that the second cargo bed  33  is also extended here but that the tailgate  34  is shown in its down position for illustration purposes. It is important to note that what is noted as the second cargo bed member  33  on the SUV may be the only exposed or open cargo bed member on a SUV. In such instance the second cargo bed member  33  may be referred to simply as an extendable cargo bed member.  
         [0042]    [0042]FIG. 4 presents a partial cutaway view of a rear part of the passenger compartment of the SUV  31  shown in FIG. 3. In this illustration, the rear window  46  is rotated upward to move it out of the way when cargo is being carried and/or when fresh air circulation is desired. In the preferred embodiment the rear window stores in a recess in the top of the external roof portion of the passenger compartment.  
         [0043]    [0043]FIG. 5 is another concept for moving the rear window  46  out of the way. In this case, it is rotated inward rather than outward as was illustrated in FIG. 4. In the preferred embodiment the rear window stores into a recess set into the interior roof of the passenger compartment.  
         [0044]    [0044]FIG. 6 presents a transverse cross section, as taken through line  6 - 6  of FIG. 9, of the pickup truck  31  cargo beds  32 ,  33  when the second cargo bed  33  is retracted. Note that the same elements apply to the SUV  31  when its second cargo bed is retracted except that the SUV would have a roof and side windows (not shown to simplify the drawings). Note also that the second cargo bed member may be the only cargo bed member in the case of the SUV as the forward compartment may be all passenger seating.  
         [0045]    Shown in FIG. 6 are rollers  35  that help support the preferably stationary first cargo bed  32 . Drive elements consisting of a pinion gear  36 , rack gear  37 , and actuator motor  38  for moving the second cargo bed forward and aft are also shown. Note that the drive elements, though desirable, are not required and that the second cargo bed  33  is designed to be easily moveable inward and outward by hand. Also shown are the preferred embodiment sliding elements  43 ,  44 , and  45  that facilitate movement of the second cargo bed  33 . Friction is reduced when the ball bearings  39  are employed to separate the slide elements.  
         [0046]    [0046]FIG. 7 presents an enlarged section of a portion of FIG. 6 that shows in more detail a first cargo bed support roller  37 , rack gear  37 , pinion gear  36 , drive actuator motor  38 , and inner slide element  43 , middle slide element  44 , and outer slide element  45 . Note that the outer slide element  45  is normally in fixed in position relative to the first cargo bed  32  and that the inner slide element  43  is normally secured to the second cargo bed  33 . It is to be noted that other means for relating the fixed first and moveable second cargo beds are also within the scope and intention of the instant invention.  
         [0047]    [0047]FIG. 8 is a partial cross section, as taken through line  8 - 8  of FIG. 7, that shows a side view of the pinion gear  36  and the rack gear  37  and how there movement results in movement of the second cargo bed  33 . While the rack and pinion gear concept shown in FIG. 8 is the preferred embodiment, other means of actuation including hydraulic cylinders, powered levers, or other not shown means can be easily adapted to provide the power for movement of the second cargo bed. It is also possible to move the second cargo bed in out with simple hand force due to the low force requirements offered by the preferred embodiment sliding elements that support the second cargo bed.  
         [0048]    [0048]FIG. 9 presents a partial cross section of the cargo beds  32 ,  33  only, as taken through line  9 - 9  of FIG. 6, that shows the second cargo bed  33  in its retracted position. The tailgate  34  is in its up position with a dotted outline shown to illustrate its closed position. The inner slide element  43 , middle slide element  44 , and outer slide element  45  are in their positions that occur when the second cargo bed  33  in retracted. Note the resiliently biased bumper backup member  42  that is in contact with the bumper  40  here.  
         [0049]    [0049]FIG. 10 presents a partial cross section of the cargo beds  32 ,  33  only, as taken through line  9 - 9  of FIG. 6, that shows the second cargo bed  33  in its extended position.  
         [0050]    While the invention has been described in connection with a preferred and several alternative embodiments, it will be understood that there is no intention to thereby limit the invention. On the contrary, there is intended to be covered all alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims, which are the sole definition of the invention.