7 Parts and components of material handling systems, namely, belts,cables, lights, lens, O-rings, photo electric readers, switches, sensors, transformers, guard rails, deck supports, support braces, starters, pulleys, drive and intermediate beds, speed con trollers, stands, bearings, belts, rollers, sprockets, wheels, springs, fans, fuses, breakers, suppressors, power supplies, controllers, hose, tubing, fittings, bushings, motors, relays, chain, mufflers, reducers, sheaves, sorters, shoes, slats, diverts, circuit boards, heater coils, for conveyors, automatic guided vehicles,automatic storage and retrieval systems, loaders, unloaders, declines, inclines, inducts and take-aways