Asymmetrically accelerated vibrator for feeding materials
Cyclic hydraulic actuator
Cyclically operating fluid drive motor with magnetically control
Cylinder having an internally-disposed drain valve
Expansible chamber device having variably restrained valve syste
Induction and exhaust apparatus for piston machines
Reciprocating piston-cylinder combination and valving control th
Reduced icing valves and gas-driven motor and diaphragm pump...
Valve arrangements for reciprocating piston machines
Valve mechanism for operating a piston within a cylinder
Valve system for a reciprocating device
Variable-torque-accommodating machine