Gas purge lip seal and seal assembly

Details Gas purge lip seal and seal assembly Gas purge lip seal and seal assembly

1996-12-19

1998-06-02

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277559, 277560, 277563, F16J 1532

Patent

active

057588813

ABSTRACT:
A shaft seal comprises a resilient sealing ring 1 with a peripheral sealing lip which is deflected axially in use so as to bear radially against a shaft. The sealing contact area 2 on the sealing lip is between predetermined limits, each defined by a change in angle of the surface of the sealing lip so that a substantial contact stress is maintained across the whole sealing contact area 2 in use. The seal can be used in an assembly including a carrier 5, 5' in which the seal is mounted. The seal can be used cooperatively with another shaft seal to prevent contaminants passing along the shaft.

REFERENCES:
patent: 2133487 (1938-10-01), Spargo
patent: 2149147 (1939-08-01), Peterson et al.
patent: 3008781 (1961-11-01), Milster
patent: 3117796 (1964-01-01), Liebig
patent: 4166628 (1979-09-01), Blaydon
patent: 4497496 (1985-02-01), Repella
patent: 4649870 (1987-03-01), Hoelzer
patent: 4995621 (1991-02-01), Devouassoux et al.
patent: 5556112 (1996-09-01), Brandt

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