Rotary expansible chamber devices – With changeable working chamber magnitude – Spring or fluid biased movable member
Patent
1991-01-08
1993-01-12
Bertsch, Richard A.
Rotary expansible chamber devices
With changeable working chamber magnitude
Spring or fluid biased movable member
418 30, F04C 1504
Patent
active
051785250
ABSTRACT:
A variable volume type vane pump comprises a housing, a rotor having a plurality of vanes, a cam ring disposed to be adjacent to said rotor, and a cover. A control piston is arranged for slidably displacing the cam ring relative to the housing and the cover. The housing, the cam ring, the control piston, and the cover cooperating to define an oil reservoir. A pressure within the oil reservoir is adjusted by a check valve.
REFERENCES:
patent: 2433484 (1947-12-01), Roth
patent: 2635551 (1953-04-01), DeLancey
patent: 4437819 (1984-03-01), Merz
Automotive Engineering, extra ed. vol. 37, No. 7 published Jun. 1988 by Tetsudo Nihon Sha Co., Ltd.
Basichas Alfred
Bertsch Richard A.
Nissan Motor Co,. Ltd.
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