Rotary control valve for power steering system

Details Rotary control valve for power steering system Rotary control valve for power steering system

1980-01-10

1981-06-09

Cohan, Alan

Valves and valve actuation

Rotary valves

Plug

13762522, 91375A, F16K 11083

Patent

active

042720567

ABSTRACT:
A control valve (31) for a power steering system or the like has a sleeve (37) with a conical bore (52) and a rotor (47) with a conical outer surface (53) conjugate to the bore (52) for relative rotation therein. The conjugate surfaces of the sleeve (37) and rotor (47) are formed with longitudinal control grooves (54), (56), (57), (58) having bottom surfaces which are parallel to the axis of the valve (31), thereby allowing the sleeve (37) and rotor (47) to be formed in one piece molds and pulled straight out of the molds.

REFERENCES:
patent: 3296939 (1967-01-01), Eddy
patent: 3799499 (1974-03-01), Shur

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