heavy duty, non-spring motorized cable and hose reels consisting of electric, hydraulic or air-powered drive units, reels, cables, slip rings and parts therefor for use in mining and mechanical handling industries; and mechanical torque regulators and parts therefore for use in mining, mechanical handling, chemical mixing, paint mixing, water treatment and ore treatment industries, and accessories therefor, namely electrical generators, air motors and hydraulic motors

SPRINGS, SPRING ASSEMBLIES, AS PARTS FOR MACHINES AND MOTORS