Power steering pump

Details Power steering pump Power steering pump

1979-05-18

1981-11-03

Taylor, Billy S.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417300, F04B 4900

Patent

active

042983169

ABSTRACT:
A power steering pump having a cam with an internal cam surface defining pumping arcs, a rotor in said cam, pumping elements preferably in the form of slippers carried by the periphery of the rotor in sliding engagement with the pumping arcs, flow control valve means having a movable valve element responsive to both static pressure and velocity pressure of the displaced fluid on the high pressure side of the pump wherein provision is made for decreasing the volume of fluid delivered by the pump at high pressure upon an increase in the speed of the rotor, and means for equalizing the pressure between the volume of fluid between two adjacent pumping elements located at a high pressure outlet port and a corresponding volume of fluid between two other adjacent slippers located at a low pressure inlet port as the pumping elements pass through their respective pump cycles.

REFERENCES:
patent: 2977888 (1961-04-01), Livermore
patent: 3167020 (1965-01-01), Rohde
patent: 3490377 (1970-01-01), Tittmann
patent: 3632232 (1972-01-01), Tomita
patent: 3663126 (1972-05-01), Langosch
patent: 3822965 (1974-07-01), Drutchas et al.
patent: 4138204 (1979-02-01), Bruguera

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