Radial piston pump

Reciprocating bladder pump, and methods of constructing and util

Reciprocating completely sealed fluid-tight vacuum pump

Reciprocating hermetic compressor

Refrigerant compressor and motor

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 pump with integral hand pump unit

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

Rotary, self-priming, liquip pump, and an impellers and shaft as

Rotociprocating pump