Patent ID: 8550542

Claim:
A trailer for carrying bulk commodities, said trailer comprising: a chassis; left and right rotating wheel and tire assemblies connected to the chassis; a body supported on the chassis, the body comprising: left and right spaced apart side walls respectively located on left and right lateral sides of the body, said left and right sidewalls each comprising a plurality of extruded panels each including an inner wall and an outer wall spaced from the inner wall, wherein adjacent panels of each of the left and right side walls are abutted such that the respective inner walls of the adjacent panels of the left side wall form an inner face of the left side wall that is oriented toward the right side wall, and such that the respective inner walls of the adjacent panels of the right side wall form an inner face of the right side wall that is oriented toward the left side wall; a bulkhead located at a forward end of the body between the left and right side walls; a tailgate located at a rear end of the body between the left and right side walls; left and right axially extending bottom rails that extend parallel to each other between the forward end of the body and the rear end of the body; a floor comprising a curved upper surface and opposite left and right lateral edges; a left draft arm comprising an inner end pivotally connected to the body adjacent the left lateral side of the body; a right draft arm comprising an inner end pivotally connected to the body adjacent the right lateral side of the body; a kingpin plate comprising a kingpin connected thereto, said left and right draft arms comprising respective left and right outer ends connected to said kingpin plate, wherein said kingpin plate is located adjacent said forward end of said body; said body constructed such that: a lower end of the left side wall and the left lateral edge of the floor are connected to the left bottom rail; a lower end of the right side wall and the right lateral edge of the floor are connected to the right bottom rail; the curved upper surface of said floor, the left and right side walls, the bulkhead, and the tailgate define a cargo space adapted for receiving and retaining a bulk commodity cargo.