Bearings – Rotary bearing – Antifriction bearing
Patent
1997-06-02
1998-11-10
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
277348, 277349, 277419, 384480, 384489, F16C 3378, F16C 3380
Patent
active
058333720
ABSTRACT:
An auxiliary seal for a bearing includes a seal housing supported by the bearing housing, and a seal ring interference fitting around a mechanical element such as a shaft or sleeve supported for rotation by the bearing. The housing and sleeve include a series of rings that interface with one another to maintain the seal ring in place on the mechanical element. A face rubbing seal is supported on the seal ring and contacts a portion of the seal housing as the mechanical element rotates relative to the bearing housing. The seal ring has an integral backup portion which contacts the face rubbing seal to prevent the face rubbing seal from sliding axially away from the seal housing. A series of seal barriers are defined by the seal housing and seal ring, including contact seals, grease dams and labyrinth seals.
REFERENCES:
patent: 3113810 (1963-12-01), Brusca
patent: 3971565 (1976-07-01), Schickling et al.
patent: 4881829 (1989-11-01), Loelsch
patent: 5174583 (1992-12-01), Orlowski et al.
patent: 5259628 (1993-11-01), Nisley
patent: 5290047 (1994-03-01), Duffee et al.
patent: 5378000 (1995-01-01), Orlowski
patent: 5498006 (1996-03-01), Orlowski
Hannon Thomas R.
Horn John J.
Miller John M.
Reliance Electric Industrial Company
Yoder Patrick S.
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