Cassette seal for a shaft

Details Cassette seal for a shaft Cassette seal for a shaft

1986-01-21

1988-01-26

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 38, 277 68, 277 95, 277134, 277153, F16J 1532, F16J 1534, F16J 1554

Patent

active

047213124

ABSTRACT:
A cassette seal has a sealing ring and a resilient protective ring for forming a dust seal to protect the sealing ring from dust. For this, a lip on the protective ring axially engages a substantially-radial countersurface in the cassette seal to accommodate better relative axial movement between the lip and countersurface with the resilience of the protective ring. In addition, at least one channel-defining projection on at least one of the axially-opposite sides of the protective ring centrifugally assists the dust seal.

REFERENCES:
patent: 2292920 (1942-08-01), Barrows
patent: 2350448 (1944-06-01), Collins
patent: 3021161 (1962-02-01), Rhoads et al.
patent: 3086781 (1963-04-01), Hudson et al.
patent: 3156474 (1964-11-01), Nelson
patent: 3501155 (1970-03-01), Dega et al.
patent: 3510138 (1970-05-01), Bowen et al.
patent: 3633927 (1972-01-01), Van Deven
patent: 3667767 (1972-06-01), Bakewell
patent: 3682488 (1972-08-01), Matsushima
patent: 4428586 (1984-01-01), Romero
patent: 4557612 (1985-12-01), Neal
patent: 4563012 (1986-01-01), Zimmermann et al.

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