Shaft seal with dust sealing lip

Details Shaft seal with dust sealing lip Shaft seal with dust sealing lip

1995-12-19

1997-07-22

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, 277153, F16J 1532

Patent

active

056497091

ABSTRACT:
A shaft seal (20) suitable for use in automotive shock absorber. The shaft seal (20) includes an annular dust sealing member (36) having a dust sealing lip (56) and an auxiliary rib (60). The auxiliary rib (60) is configured to present a rounded profile (62) having the radius of curvature larger than the radius of curvature of the dust sealing lip (56). The dust sealing lip (56) supported by the auxiliary rib (60) sustains dust scraping action for a prolonged time period to effectively prevent ingress of dust and dirt.

REFERENCES:
patent: 3455564 (1969-07-01), Dega
patent: 3563442 (1971-02-01), Kretchman
patent: 4155560 (1979-05-01), Repella
patent: 4243232 (1981-01-01), Repella
patent: 4357026 (1982-11-01), Panchetti
patent: 4886281 (1989-12-01), Ehrmann et al.
patent: 4964647 (1990-10-01), Stephan
patent: 5271629 (1993-12-01), Dahlhaus et al.

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