Abstract: The conveyor forms the floor of the trailer and is made up of longitudinal slats slidably supported on cross beams. In a center frame trailer all the cross beams are supported on longitudinal beams. In a frameless trailer some of the cross beams are supported on longitudinal beams which are part of the suspension apparatus for the trailer. In both types of trailers three of the cross beams are activated to activate the slats. These three activated cross beams are called cross drives and are slidably mounted and positively guided directly on the longitudinal beams.

Abstract: A watertight belt-drive conveyor system for transporting semi-liquid sludge from semitrailers is disclosed. The conveyor belt is looped around two pulleys located at either end of the trailer and transported by a main drive drum located below the trailer. Adequate frictional pressure is maintained between drum and conveyor belt for driving the conveyor belt under load by a system of four pulleys which force a full-width V-belt into close frictional contact with the outer surface of that portion of the conveyor belt which is wrapped around the main drive drum.