Rotary pump with hydraulic vane actuation

Details Rotary pump with hydraulic vane actuation Rotary pump with hydraulic vane actuation

1997-07-30

2000-02-29

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Groove communicates with vane slot

418133, 418268, F04C 2344

Patent

active

060301953

ABSTRACT:
A sliding vane rotary pump having fixed volume hydraulic vane actuation. The pump generally includes a rotor assembly rotatably positioned within a rotor chamber to define at least one pumping chamber. The pumping chamber is divided into a primary chamber and a secondary chamber. The axial walls of the rotor chamber define a plurality of transfer grooves and the rotor defines a plurality of rotor transfer holes. The rotor transfer holes and transfer grooves are arranged to provide a flow path from the secondary chamber to the vane slot of an extending vane each time a vane travels through the secondary chamber.

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patent: 5266018 (1993-11-01), Niemiec
patent: 5807090 (1998-09-01), Agner

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