Fluid seal for rotating shafts

Details Fluid seal for rotating shafts Fluid seal for rotating shafts

1975-02-19

1976-04-27

Rothberg, Samuel B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 4, 277 41, 277 74, F16J 1534

Patent

active

039530388

ABSTRACT:
An improved fluid seal for a rotating shaft is provided which includes an inner annular ring or runner adapted to be secured to the rotating shaft and a composite sealing ring which is keyed to the inner ring and includes a radial sealing surface. An outer, nonrotating, annular ring or housing which is concentrically disposed with respect to the runner and sealing ring, includes a radial sealing surface which sealingly engages the sealing surface of the sealing ring.
A circular wave spring, which is anchored to the housing and is disposed between the composite sealing ring and a snap ring secured to the housing, provides an axial force which forces the two sealing surfaces into sealing contact. The waves of the spring act as individual hydrodynamic bearings, and the axial force is transmitted across an oil film. This eliminates rubbing contact and the need for a separate thrust bearing.

REFERENCES:
patent: 1826212 (1931-10-01), Gremminger
patent: 2575549 (1951-11-01), Doble
patent: 2706652 (1955-04-01), Berger
patent: 2756080 (1956-07-01), Andresen et al.

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