Revolving vane pump-motor-meter with a toroidal working chamber
Roller pump with radial members
Roller vane pump
Roller vane pump having a partly curved vane slot
Roller vane pump having straight line segments on the rotor
Roller vane pump incorporating a bearing bush
Rotary engine with inlet and outlet valves
Rotary expander
Rotary fluid-handling mechanism
Rotary fluid-handling mechanism
Rotary pump/engine
Rotary vane mechanical power system utilizing positive displacem
Rotary vane-type pump