Patent ID: 7950679
Filing Date: 2011-05-31
Classification: A47J,B62B

Abstract:
1. A wagon for the transportation of food trays comprising: a dual-surface, molded shell comprising a cuboid-shaped internal surface having a first rectangular opening, an external surface having a second rectangular opening, and a junction surface connecting the first rectangular opening to the second rectangular opening to form an enclosed volume having an internal surface, the junction surface comprising a first groove at a fixed distance from the first rectangular opening for holding a first panel, and a second groove at a fixed distance from first groove for holding a second panel; an insulating foam in the enclosed volume in contact with the internal surface; and a frame having at least three wheels connected to an outer ring of the external surface, wherein the frame is a closed metallic structure of U-shaped segments above the outer ring with a series of gaps and openings for evacuation of waste from the enclosed volume, and wherein the frame is of a greater radial size than the outer ring of the external surface to create a built-in shock absorber system; wherein the first panel is slidably connected in the first groove for sliding from an open position to a closed position, and wherein the second panel is slidably connected in the second groove for sliding from an open position to a close position, and wherein the sliding movement of the first panel within the first groove requires an outside force to overcome the frictional force between the first groove and the first panel.