Abstract: A height-adjustable work surface assembly including a movable work surface. A frame extends from beneath the work surface in order to provide support for the work surface. The frame has a support member directed downward from beneath the work surface. A leg is adjustably connected to the support member. A rack is connected to one of the support member and the leg. The rack includes a plurality of substantially horizontally extending teeth. An interlocking block is positioned adjacent the rack and within a cavity formed between the rack and the leg. The interlocking block is movable into and out of engagement with the rack. The cavity has a width greater than a width of the interlocking block and a width of one the teeth. A first fastening mechanism is connected to the interlocking block. The first fastening mechanism is horizontally movable such that the interlocking block is secured against the rack in a locked position and completely disengaged from the rack in an unlocked position.

Abstract: A transport cart is disclosed having a load receiving and supporting platform of sandwich-type construction formed from a pair of spaced panels each having offset portions which contact the other panel. The panels, where they contact each other, are rigidly secured together to form a rigid, load supporting sandwich. The platform is mounted on swivel casters interconnected by a linkage system which responds to the pivotal movement of the tow bar and which effects opposite pivotal movement of the front and rear casters to cause the cart to track the towing vehicle.