High-pressure seal in piston

Details High-pressure seal in piston High-pressure seal in piston

1981-03-18

1982-08-31

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 1, 277165, 277188R, 277125, 92251, F16J 1518

Patent

active

043469035

ABSTRACT:
A high-pressure seal having a dynamic seal ring and a static seal ring supported by a backup ring is improved upon such that support ring is a one-piece construction having sealing chambers respectively defined together with the bore wall of the cylinder with the piston recess for the dynamic and static seal rings. The seal chamber for the static seal ring is formed to induce a stretching of this ring when the high-pressure seal is assembled in place, whereby the seal between the piston and cylinder is improved as the static seal ring is stretched to provide a tight seal between the backup ring and the piston.

REFERENCES:
patent: 2747954 (1956-05-01), Damm et al.
patent: 2797971 (1957-07-01), Greenbugh
patent: 2935365 (1960-05-01), Dega
patent: 3071386 (1963-01-01), Scannell
patent: 3971298 (1976-07-01), Kulig

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