Sealing apparatus between rotatable coaxial inner and outer shaf

Details Sealing apparatus between rotatable coaxial inner and outer shaf Sealing apparatus between rotatable coaxial inner and outer shaf

1986-12-05

1988-07-05

Levy, Stuart S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277149, F16J 906, F16J 1542

Patent

active

047549831

ABSTRACT:
Sealing apparatus between inner and outer coaxial rotating shafts in which two sealing rings sealingly contact each other along confronting circumferential surfaces. In a position of rest, the rings surround the inner shaft with a predetermined circumferential sealing clearance of rotational symmetry. The sealing rings are supported in axially resilient manner between radial walls of a housing secured to the outer shaft which walls partly span the distance between the shafts. The sealing rings are pivotally connected to the housing for movement about pivot axes which are preferably 180.degree. apart from each other and, under the action of centrifugal force during rotation of the outer shaft, the rings pivot laterally towards surfaces of the housing to take up predetermined outer circumferential clearances of rotational symmetry between the outer periphery of the rings and the housing. The sealing rings are held in the housing by resilient elements which bias the rings into positions in which all clearances are rotationally symmetrical in the position of rest.

REFERENCES:
patent: 2589274 (1952-03-01), Moratta
patent: 3306620 (1967-02-01), Taschenberg
patent: 4047742 (1977-09-01), Haferkamp
patent: 4384729 (1983-05-01), Birenbaum

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