Integral housing pump with servo controlled cheek plate

Details Integral housing pump with servo controlled cheek plate Integral housing pump with servo controlled cheek plate

1974-06-03

1976-01-06

Croyle, Carlton R.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve controls venting by movable pump...

F04B 4902

Patent

active

039307590

ABSTRACT:
An integral housing type rotary positive displacement fluid flow device such as a power steering pump is provided with a servo valve sensitive to a pressure gradient on opposite sides of an orifice in the fluid flow path, controlling the unloading of a fluid pressure loaded cheek plate which unseats to directly bypass fluid from the outlet to the inlet in amounts exceeding the flow control set point and has an efficiently cored housing providing cavities for the components and passages connecting them in operative relation.

REFERENCES:
patent: 2755741 (1956-07-01), Erskine
patent: 2818813 (1958-01-01), Pettibone et al.
patent: 3671143 (1972-06-01), Clark
patent: 3822965 (1974-07-01), Drutchas

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