7 power operated lifting and restraining tools, machines, and structural parts therefor, namely, cargo hooks, winches, buckles and hoists; transmission parts for machines, namely, transmission gears; hoists for loading and unloading rocket pod containers; rescue hoists, namely, helicopter rescue hoists, reeling machines and external hooks; rotary and linear actuators including torque converters, articulated joints, and power transmission timing belt drives, shaft couplings and clutch sprockets; linear motion components and assemblies, namely, rollnuts, rollout longspan assemblies, ball reversers, ball oscillators; aircraft landing gear actuators; mechanical linear travel lock actuators; motorized safety locks; hold open rods, safety locks, restraint systems and latch assemblies for use in aviation