
A conveyor with a straight pathway has laterally spaced side walls with opposing banks of driven roller assemblies mounted thereon. Each roller assembly has a shaft, a roller, and a driven pulley. The pulleys of assemblies on a side wall are driven by an endless positive drive belt that has teeth for meshing with the grooves on a driven pulley. The belt is maintained in its meshed relationship with the driven pulleys by an anti-camming surface that obstructs the belt from being cammed out of its...











