Hydrodynamic seal

Details Hydrodynamic seal Hydrodynamic seal

1984-11-08

1987-11-10

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 47, 277152, 277DIG6, F16J 1532, F16J 1554

Patent

active

047052775

ABSTRACT:
A polytetrafluoroethylene seal is provided with surface effect vanes that effect hydrodynamic pumping of oil upon rotation of a shaft about which the seal is disposed.

REFERENCES:
patent: 3929341 (1975-12-01), Clark
patent: 4118856 (1978-10-01), Beinard et al.
patent: 4132421 (1979-01-01), Corsi et al.
patent: 4243235 (1981-01-01), Repella
patent: 4383691 (1983-05-01), Potter
patent: 4416458 (1983-11-01), Takenaka et al.
patent: 4444399 (1984-04-01), Yanai
patent: 4447064 (1984-05-01), Ehrmann et al.

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