Hydraulic seal system

Details Hydraulic seal system Hydraulic seal system

1995-10-12

1999-08-24

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277582, F16J 1540

Patent

active

059415347

ABSTRACT:
A hydraulic seal system includes a seal ring groove and a seal ring mounted in the seal ring groove. The seal ring and seal ring groove are rotatable relative to each other, and have sealing sides, respectively, which are put into pressure contact with each other by a sealing hydraulic pressure. The seal ring is made of a synthetic resin to have a fixed elasticity. The sealing side of the seal ring is formed into a convex curved surface with its radially central portion raised, so that when a hydraulic pressure is applied, the sealing side can be compressedly deformed to define a hydraulic pocket. Thus, the formation and retaining of an oil film at the pressure contact portions of the sealing sides is promoted.

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patent: 4889349 (1989-12-01), Muller
patent: 5118119 (1992-06-01), Dittinger
patent: 5123662 (1992-06-01), Sugimura

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