Bi-directional oil seal with leakage recovering rib formations

Details Bi-directional oil seal with leakage recovering rib formations Bi-directional oil seal with leakage recovering rib formations

1989-06-12

1991-03-26

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277153, F16J 1532

Patent

active

050022890

ABSTRACT:
An oil seal comprises a seal body, a lip, and a plurality of ribs provided on a bevel facing a space without oil when the inner circumference of the lip is utilized. The plurality of ribs are included an angle with respect to the rotational direction of a shaft. Rear ribs with respect to the rotatational direction are set longer than the front ribs. Effecive oil recovery is enabled by the rib structure from the front ribs to the rear ribs.

REFERENCES:
patent: 3923315 (1975-12-01), Hadaway
patent: 4084826 (1978-04-01), Vossieck et al.
patent: 4399998 (1983-08-01), Otto

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