All goods in this class including material handling installations and parts thereof in this class, conveying installations and conveying apparatus in this class, roller conveyors, continuous shelves, band conveyors, conveyor belts, driving belts, chain conveyors, circular conveyor installations in this class; rollers and wheels in this class including friction rollers, braking rollers, and rollers with attached or inserted coupling for transport installations, sprocket wheels, tighteners (tension rollers) for use with transport installations, rope and cable pulleys, gear wheels, antifriction and friction bearings, and parts thereof; motors (engines) in this class for use with material flow and transport installations