Machines and machine tools for the cutting and forming of materials for treatment of materials and for manufacturing; linear actuators for valves; hydraulic valve actuators; pneumatic valve actuators; valves as parts of machines; valve closure mechanisms, namely, linear actuators, pneumatic valve actuators and hydraulic valve actuators; actuators for valves, namely, linear actuators, pneumatic valve actuators and hydraulic valve actuators; clack valves as parts of machines; pressure valves as...