Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1996-06-06
1998-02-03
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277216, 277220, F16J 1546
Patent
active
057135789
ABSTRACT:
One end of a seal ring retained in a seal ring groove is formed in such a manner that it is offset radially inwardly from the other end, so that oil is permitted to leak by opening an abutment joint formed by the two ends in a condition in which no hydraulic pressure is applied. If a hydraulic pressure is supplied to bring a hydraulic actuator into an engaged state, the one end of the seal ring is deformed radially outwardly by the hydraulic pressure to come into close contact with a sealing surface and to close the abutment joint, thereby preventing the oil from-leaking past the oil ring. Consequently, upon engagement of the hydraulic actuator, a sealing property or salability of the oil can be assured, and upon releasing of the engagement of the hydraulic actuator, an oil leaking property of the seal ring can be provided, leaking property of the oil can be provided, thereby enhancing the responsiveness of the hydraulic actuator.
REFERENCES:
patent: 3186723 (1965-06-01), Wagner
patent: 3259392 (1966-07-01), Peickii et al.
patent: 3655208 (1972-04-01), Walker
patent: 4053163 (1977-10-01), Vegella
patent: 4098515 (1978-07-01), Dakata
patent: 4498681 (1985-02-01), Heinz
patent: 4741509 (1988-05-01), Burch et al.
patent: 5178400 (1993-01-01), Singh
patent: 5312116 (1994-05-01), Quaglia
Amano Kenji
Takada Mayumi
Terao Kiminobu
Ueda Kouji
Cummings Scott
Honda Giken Kogyo Kabushishi Kaisha
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