Valve assemblies

Details Valve assemblies Valve assemblies

1984-10-29

1987-01-06

Schwadron, Martin P.

Fluid handling

Systems

Multi-way valve unit

91375A, 277 3, 277 27, 277177, 251900, F16K 1112, F16J 1546

Patent

active

046339078

ABSTRACT:
In a sealing arrangement for a rotary fluid pressure control valve, such as a power steering control valve, a resilient sealing ring is located in a ring groove for sealing engagement with an outer cylindrical member. Frictional losses and a tendency for the sealing assembly to jam are reduced by equalization of the fluid pressure on opposite faces of the sealing ring. This is achieved by virtue of a tapered ring cross-sectional profile and other ring profiles disclosed herein, or by provision of a relieved zone in the ring groove for transmission of fluid pressure.

REFERENCES:
patent: 3887148 (1975-06-01), McClure et al.
patent: 4335749 (1982-06-01), Walter
E. I. du Pont de Nemours & Co., "The Journal of Teflon", Sep.-Dec. 1970, back cover.

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