Power steering gear with flow check valve

Details Power steering gear with flow check valve Power steering gear with flow check valve

1978-10-16

1980-11-11

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Inlet check valve with means for disconnectable supply line

91446, 1375155, 137542, F15B 13042, F16K 1506

Patent

active

042325854

ABSTRACT:
A power steering gear having a piston nut fed with pressure fluid from a source through a rotary valve. The construction includes a special one-way valve assembly in the high pressure port which is formed by a plunger which seats into the end of the steel tube of the power steering hose. The plunger tube and external O-ring provides for improved sealing of the power steering gear to prevent external leaks and to provide for improved control of flow into the housing from the source and to block flow from the housing into the high pressure port so that road excited vibrations are not fed back to the vehicle handwheel.

REFERENCES:
patent: 1785271 (1930-12-01), Lemex
patent: 2949928 (1960-08-01), Hobson
patent: 3022772 (1962-02-01), Zeigler et al.
patent: 3070112 (1962-12-01), Fricke et al.
patent: 3184921 (1965-05-01), Allen
patent: 3246472 (1966-04-01), Kries
patent: 3751002 (1973-08-01), Folkerts et al.
patent: 3941033 (1976-03-01), Olsen
patent: 3952510 (1976-04-01), Peterson

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