Rotary fluid seals with floating sealing rings

Details Rotary fluid seals with floating sealing rings Rotary fluid seals with floating sealing rings

1981-03-09

1982-09-07

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 25, 277 95, 277177, F16J 1534

Patent

active

043480314

ABSTRACT:
A rotary fluid seal, especially an oil seal for a rotary shaft, comprises a sealing ring between axially-opposed divergent frusto-conical counterfaces of relatively rotatable members, preferably casing rings in a self-contained seal unit, the sealing ring having a pair of divergent sealing lips presenting frusto-conical contact faces to the counterfaces and being substantially coaxial with but floating freely between the relatively rotatable members, the contact faces bearing frictionally on the counterfaces so that, on relative rotation of the members, the sealing ring is frictionally driven into rotation by one or other of the members and the effect of centrifugal force, tending to cause the sealing lips to flex angularly outwardly, reduces the bearing load of the contact faces on the counterfaces.

REFERENCES:
patent: 2561694 (1951-07-01), Gilbert
patent: 2888281 (1959-05-01), Ratti
patent: 3275334 (1966-09-01), Voitik
patent: 3504917 (1970-04-01), Malmstrom
patent: 3511511 (1970-05-01), Voitik
patent: 4037849 (1977-07-01), Thumm
patent: 4188039 (1980-02-01), Krisak et al.

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