Patent ID: 6193043
Filing Date: 2001-02-27
Classification: B65G

Abstract:
In a retractable roller system for handling cargo, said system including a main channel member with a bottom wall, first and second opposing side walls, a ledge running along the inner surface of each of said walls, the ledge of said wall being at a higher elevation than the ledge of said first side wall, an inflatable bladder supported on the bottom wall of said channel member, a roller tray member having side walls with ledges running along the outer surfaces of each of said side walls, the ledges of said side walls being at different elevations, rollers supported between said side walls, means for inflating the bladder to drive the roller tray upwardly, and a cover plate having a plurality of apertures formed therein through which at least a portion of each of said rollers can pass, and means for inflating the bladder so that it drives said roller tray upwardly to cause the rollers to protrude through the cover plate apertures, the improvement comprising:means for removably attaching the cover plate to the main channel member including a pin member fixedly mounted between the side walls of said channel member near one end thereof, said cover plate having opposing side walls extending from the opposite sides thereof, one of the ends of each of said side walls having a slot formed therein, said pin member being installed in said slots, and means for removably attaching the end portions of said cover plate to said channel member,said roller tray being tiltably removable from said main channel member when the bladder is deflated and said cover plate is removed.