Rotary vane oil pump and method of operating

Details Rotary vane oil pump and method of operating Rotary vane oil pump and method of operating

1987-04-23

1988-12-06

Croyle, Carlton R.

Rotary expansible chamber devices

Trapped fluid relief

418259, F04C 200

Patent

active

047893176

ABSTRACT:
A rotary vane pump has restricted fluid communication between the inlet and the trapped volume for about 4.degree. of rotation beyond when the vane starts past the inlet. Similarly there is restricted communication between the trapped volume and the outlet for about 4.degree. of rotation prior to the vane reaching the outlet. Additionally, in the preferred embodiment, the trapped volume is in restricted communication with the outlet prior to its isolation from the inlet.

REFERENCES:
patent: 888779 (1908-05-01), Berrenberg
patent: 1558639 (1925-10-01), Schmied
patent: 2216053 (1940-09-01), Staley
patent: 3150646 (1964-09-01), Bernard
patent: 4261184 (1981-04-01), Stout
patent: 4284392 (1981-08-01), Pareja
patent: 4536141 (1985-08-01), Maruyama
patent: 4702684 (1987-10-01), Takao et al.

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