Abstract: A trailer includes a bed with a floor structure and a superstructure mounted on the bed. The superstructure includes a wall construction of wall sections with interconnected tongue-and-groove edges and wall section ends. Corner posts include channels receiving the wall section ends for forming corners of the superstructure. A top rail forms a rim of the superstructure and receives the top-most wall sections. A rub rail connects the walls to the floor structure and receives the bottom-most wall sections. A method of manufacturing a trailer includes the steps of providing a bed with a floor structure and forming a superstructure from wall sections by interconnecting their tongue-and-groove edges. The trailer can be configured for a moving floor, a tipping mechanism or an ejector mechanism for discharging and/or loading materials and cargo in an interior.

Abstract: A container packer system includes a transfer base, which receives a container packer adapted for movement longitudinally between retracted and extended positions with respect to the transfer base. The transfer base includes a power subsystem with a motor or engine driving an hydraulic pump for powering hydraulic piston-and-cylinder units of the system, including a container packer piston-and-cylinder unit for hydraulically extending and retracting the container packer. The container packer generally encloses an interior adapted for receiving bulk material for transfer to a transport container, which can comprise a standard shipping container, a trailer or some other bulk material receptacle. The container packer includes a push blade assembly longitudinally movably mounted in its interior and actuated by a push blade piston-and-cylinder unit.