Vane pump having vane pressurizing grooves

Details Vane pump having vane pressurizing grooves Vane pump having vane pressurizing grooves

1994-11-28

1996-02-13

Vrablik, John J.

Rotary expansible chamber devices

With changeable working chamber magnitude

Spring or fluid biased movable member

418 30, 418 82, 418268, F04C 2344, F04C 1504

Patent

active

054907705

ABSTRACT:
When one chamber of vane pump is located at an end of a discharge process and is compressed at maximum, pressure in the chamber is higher than the discharge pressure of the pump. Vanes are supported in slits of a rotor. A passage connecting the one chamber and inner sides of the vanes in the slits supplies pressure to push the vanes onto an inner surface of a cam-ring of the pump.

REFERENCES:
patent: 3598510 (1971-08-01), Aoki
patent: 5141418 (1992-08-01), Ohtaki et al.

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