High pressure shaft seals

Details High pressure shaft seals High pressure shaft seals

1976-09-16

1977-08-16

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

308111, 308125, 277134, 277152, F16J 1532

Patent

active

040422488

ABSTRACT:
A shaft seal structure located in the annular space between a pump housing and a relatively rotatable shaft. The seal includes an outer cup member, a plurality of intermediate plastic washers, an inner spring disc member and an assembly retainer. The cup member has a radial portion formed in an inward arcuate frustoconical section defining an opening which encircles the shaft in closely spaced relation with a concavity of cup adapted to face the high interior pressure of the housing. The annular resilient plastic washers are supported such that high interior pressures during operation of the pump are operative to force the washers into layered conformity with the concavity of the outer cup section, while lubricant-containing capillary means are provided intermediate the washers.

REFERENCES:
patent: 2245475 (1941-06-01), Hately
patent: 2630356 (1953-03-01), Johnson
patent: 2804325 (1957-08-01), Riesing
patent: 3464709 (1969-09-01), Furgason et al.
patent: 3801114 (1974-04-01), Bentley
patent: 3857156 (1974-12-01), Clark
patent: 3929341 (1975-12-01), Clark
patent: 3932006 (1976-01-01), Tertinek et al.
patent: 3938813 (1976-02-01), Forch
patent: 3973781 (1976-08-01), Grorich

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