Linear mechanical actuators, pneumatic valve actuators, pneumatic steam actuators, pneumatic slice lip actuators, pneumatic slice actuators, rotary actuators, rotary to linear actuators, mechanical valve actuators, electromechanical valve actuators; machine parts, namely ratchets, gears, spur and helical gears, worm gears, gear wheels, toothed racks, gear boxes, precision gear boxes, valves, gear pumps, gear belt drives, gear chain drives