Shaft and sealing ring

Details Shaft and sealing ring Shaft and sealing ring

1985-03-06

1987-12-01

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277134, 277152, F16J 1532, F16J 1554

Patent

active

047099305

ABSTRACT:
In the combination of a shaft with a polymeric ring having a sealing surface which flares against a counter surface on the shaft to form a dynamic sealing zone therebetween upon relative rotation of the shaft and ring, both the sealing and counter surfaces have hydrodynamically-acting feed-back elements for pumping fluid which seeps between the surfaces upon the relative rotation. The resultant, net axial component of pumping actions of the elements is in one axial direction along the shaft to pump the fluid back into the space from which it came, but the elements have different pumping actions. The different pumping actions produce a fluid circulation in the dynamic sealing zone which inhibits seal-wearing granular deposits.

REFERENCES:
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patent: 3231285 (1966-01-01), Weltmer et al.
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patent: 3251601 (1966-05-01), Harvey
patent: 3259393 (1966-07-01), Desa
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patent: 3746350 (1973-07-01), Mayer et al.
patent: 3752489 (1973-08-01), Latinen
patent: 3779521 (1973-12-01), Godlines
patent: 3913925 (1975-10-01), Gyory
patent: 3940153 (1976-02-01), Stocker
patent: 4084825 (1978-04-01), Ludwig
patent: 4118856 (1978-10-01), Bainard
patent: 4132421 (1979-01-01), Corsi et al.
patent: 4519712 (1985-05-01), Barr

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