Self-venting seal assembly for relatively movable members

Details Self-venting seal assembly for relatively movable members Self-venting seal assembly for relatively movable members

1985-11-21

1987-11-03

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277177, 277180, 277188A, F16J 1524

Patent

active

047039370

ABSTRACT:
An O-ring is positioned with its inner peripheral surface in sealing engagement with a shaft and with its outer peripheral surface in sealing engagement with the wall of a cylindrical hole. When pressure is applied to the high pressure end of the O-ring, the low pressure end thereof is pressed against a radially extending retaining disc. An axially extending vent hole is formed through the outer portion of the retaining disc to permit fluid adjacent the outer peripheral surface of the low pressure end of the O-ring to escape so that such fluid cannot exert radially inward pressure forcing the inner peripheral surface of the O-ring into tight frictional engagement with the shaft. A wire ring disposed adjacent the vent hole prevents the compressed O-ring from extruding into and plugging the vent hole.

REFERENCES:
patent: 2391577 (1945-12-01), Larson
patent: 2843434 (1958-07-01), Orloff et al.
patent: 3573870 (1971-04-01), Gastineau
patent: 3741615 (1973-06-01), Otto
patent: 4210405 (1980-07-01), Jesswein
patent: 4244553 (1981-01-01), Escobosa
patent: 4253713 (1981-03-01), Chambers, Sr.
patent: 4426090 (1984-01-01), Bender
patent: 4428630 (1984-01-01), Folger et al.

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