Dual element seals with hydrodynamic support

Details Dual element seals with hydrodynamic support Dual element seals with hydrodynamic support

1983-11-16

1984-06-12

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 25, 277 26, 277 27, 277198, 277DIG6, 277135, F16J 1542, F16J 1548

Patent

active

044537212

ABSTRACT:
Two seal elements are respectively mounted on generally coaxial relatively rotatable members so that each seal element is capable of relative radial movment with respect to its associated member. One of the seal elements is mounted on its associated member in such a manner that they remain coaxial. The seal elements have confronting radially spaced apart surfaces which are so configured that together they define a hydrodynamic gas bearing. The arrangement is such that upon the relative rotation of the members said seal element which is mounted so as to remain coaxial with its associated member hydrodynamically supports the other seal element so that they remain coaxial.

REFERENCES:
patent: 2948555 (1960-08-01), Wright
patent: 3970318 (1976-07-01), Tuley
patent: 4161317 (1979-07-01), Sakamaki
patent: 4199152 (1980-04-01), Catterfeld
patent: 4211424 (1980-07-01), Stein
patent: 4330133 (1982-05-01), Polfreyman et al.
patent: 4331337 (1982-05-01), Cross et al.

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