Shaft seal device

Details Shaft seal device Shaft seal device

2011-06-14

2011-06-14

Bomar, Shane (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S552000, C277S571000

Reexamination Certificate

active

07959158

ABSTRACT:
A shaft sealing device includes a seal assembly equipped with a fitting part having a fitting surface hermetically fittable within a hole defining surface of a housing and a rubber elastomer first seal lip extending inward from the fitting part and having a seal surface which seals a fluid inside an internal boundary thereof. A seal sleeve made of metal or resin material is equipped with a slide seal surface that is in slidable contact with the seal surface of the first seal lip. A concave rotor surrounds a seal surface region defined at a longitudinal end of the slide seal surface, and includes a close-contact fitting surface that is hermetically fitted to a rotary shaft. A discharge port defined by the rotor facilitates the sealed fluid being pushed back to the rotor in a direction extending away from the seal surface region.

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