Pressure loaded pump
Pressure sealing assemblies for rotary vane piston devices
Pressure-compensated gear-rotor hydraulic motor or pump
Pressurized vapor driven rotary engine
Principle and system of sealing the piston of rotary piston...
Process for lining a fluid helical device stator
Progressive cavity drive train
Progressive cavity hydraulic machine
Pulse motor nutrunner
Pump/motor apparatus
Pumping seal for rotary piston engines
Pumps
Pumps and motors having eccentric shaft sealing means
Quasiturbine (qurbine) zero vibration - continuous...
Radial axis, spherical based rotary machines
Radial chamber, positive-displacement fluid power device
Reciprocating rotary piston system and pressure pump and...
Reciprocating rotary piston thermal engine with a spherical...
Reciprocating rotating vane pump or engine
Removal device for a milking means and a sliding vane motor...