Lip seal device

Details Lip seal device Lip seal device

1992-02-14

1992-09-22

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 47, 277152, F16J 1532

Patent

active

051491060

ABSTRACT:
A lip seal device comprises: a case surrounding a rotary shaft; a lip having an outer peripheral base end portion secured to the case, and an inner peripheral front end portion curved towards a sealed fluid so as to be in sliding contact with said rotary shaft; and an annular groove formed in the sealing surface of the front end portion of the lip. The lip seal device further comprises an elastic retaining member arranged in such a manner that the outer peripheral base end portion secured to the case, the inner peripheral front end portion is laid over the front end portion of the so as to push the front end portion of the lip against the rotary shaft, and the front end portion of the retaining member is held spaced from the rotary shaft, whereby even when the lip seal device is vibrated or the rotary shaft vibrates, an excellent sealing effect can be expected.

REFERENCES:
patent: 2316941 (1943-04-01), Dodge
patent: 2326286 (1943-08-01), Bush
patent: 2345588 (1944-04-01), Dodge
patent: 2596174 (1952-05-01), Reich
patent: 3269736 (1966-08-01), Hieber et al.
patent: 3549445 (1977-12-01), McMahon
patent: 4721314 (1988-01-01), Kanayawa et al.
patent: 4755115 (1988-07-01), Akaike

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