Modular sliding platform for a truck bed

A slidable platform for a truck bed, the slidable platform comprising:

• an upper frame peripherally defining a platform, wherein a frame footprint of the upper frame is dimensioned to be circumscribed by a bed footprint of the truck bed while occupying a substantial portion of the bed footprint;
• and
• a lower frame
• operatively associated with the upper frame so that the upper frame is movable between a retracted position and one of a plurality of extended positions, wherein in the retracted position the upper frame and lower frame are both circumscribed by the bed footprint, and wherein in any of the extended positions the upper frame projects beyond the bed footprint;
• a front edge along the upper frame, wherein the front edge provides a locking handle;
• a locking bar operatively associated with the locking handle so that the upper frame is movable between an unlocked engagement and a locked engagement in more than one of the extended positions of the plurality of extended positions;
• the upper frame comprises a rear member, wherein the rear member comprises a supporting element;
• two side load bearings, one of the two side load bearings disposed at each of two opposing ends, respectively, of the support element;
• two sliding tracks provided on two longitudinal members of the lower frame, respectively, wherein each of the two sliding tracks is configured to slidably receive a respective side load bearing;
• and
• two free floating bearings along the lower frame to work with the two side load bearings to facilitate the upper and lower frames movable operative association.