Seal ring and seal device

Details Seal ring and seal device Seal ring and seal device

1995-09-21

1997-05-27

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277 58, 277165, 277177, F16J 1540

Patent

active

056324944

ABSTRACT:
A seal ring fitted into ring grooves provided in the outer peripheral surface of a shaft has side surfaces and an inner circumferential surface which receive hydraulic pressure supplied to the ring groove. The side surfaces of the seal ring are made tapered surfaces so that the width of the seal ring on its inner circumferential side is made smaller than the width of the seal ring on its outer circumferential side. The seal ring has an outer circumferential surface which is arcuate in form. Hydraulic pressure which acts upon one side surface of the seal ring causes the other side surface of the seal ring to come into sliding contact with the side wall surface of the ring groove. As a result, loss torque due to sliding contact is reduced. The tapered surfaces of the seal ring contact the edge of the side wall surface of the ring groove at all times so that there is no leakage of oil.

REFERENCES:
patent: 3727927 (1973-04-01), Packard
patent: 3887198 (1975-06-01), McClure et al.
patent: 3895815 (1975-07-01), Panigati
patent: 4165079 (1979-08-01), Clements
patent: 4299401 (1981-11-01), McCormick
patent: 4350352 (1982-09-01), Kolarik
patent: 4497494 (1985-02-01), Allen et al.
patent: 4633907 (1987-01-01), Adams
patent: 4681326 (1987-07-01), Kubo
patent: 4934250 (1990-06-01), Siegel
patent: 5136781 (1992-08-01), Stoll

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