Hydraulic vane type pump

Mechanically driven roller vane pump with enlarged surface...

Modular vacuum pump assembly

Multiple displacement pump system and method

Multiple displacement pump system having control sequence for un

Multiple displacement pump system with bypass controlled by inle

Roller vane stage for a fuel pump

Rotary fluid energy converter

Rotary fluid machine having rotor segments on the outer...

Rotary gas expansion motor

Rotary pump and improved discharge port arrangement

Rotary vane pump having multi-independent outputs due to stator

Rotary vane pump with supplemental pumping means

Rotary vane pump with undervane pumping and an auxiliary outlet

Two-stage rotary compressor

Two-stage rotary compressor

Vane pump having spokes with channel-shaped vanes

Vane pump with speed responsive check plate deflection

Vane-cell pump

Variable capacity vane pump with means to vary the area of overl