Fluid seal pumping effect lip seal for rotary shaft

Details Fluid seal pumping effect lip seal for rotary shaft Fluid seal pumping effect lip seal for rotary shaft

1980-12-12

1983-10-18

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277166, 277178, 277134, F16J 1532

Patent

active

044101902

ABSTRACT:
A moulded seal for a fluid seal arrangement which requires no trimming of the sealing which comprises an elastomeric frusto-conical body part having a sealing lip at its inner face in spaced disposition relative to the lesser diameter end thereof. In use, the space between the sealing lip and the adjacent free end of the body is subjected to an hydrodynamic pumping action away from the lip on displacement of the shaft to reduce fluid pressure in the region of the lip and hence discourage leakage. Various seal arrangements embodying the moulded seal are also disclosed.

REFERENCES:
patent: 2316713 (1943-04-01), Procter
patent: 3099454 (1963-07-01), Walinski
patent: 3640542 (1972-02-01), Mowat et al.
patent: 3871669 (1975-03-01), Repella
patent: 4278261 (1981-07-01), Miura et al.

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