US Patent 10414342 Rail system for vehicle shelving and canopies

A vehicle rail system has a frame mountable to a vehicle, the frame having a plurality of support legs, the support legs interconnected via support beams. One or more fixed rails are mountable to the support frame, each fixed rail comprising a plurality of bearings thereon and configured to receive a sliding rail, the sliding rail having a plurality of grooves for receiving the bearings of the fixed rail so as to be slidable thereon. The bearings are located along regular intervals of the fixed rails on each non-mounted side. The sliding rail is then able to slide along the bearings of the fixed rail, extending to the exterior of the frame mounted in the vehicle.