Unitized exclusion seal

Details Unitized exclusion seal Unitized exclusion seal

1989-07-10

1990-07-24

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 38, 277 47, 277 53, 277 56, 277 58, 277 65, 277 95, 277134, 277152, 277153, F16J 1532, F16J 1534, F16J 1544, F16J 1554

Patent

active

049430688

ABSTRACT:
A static dirt exclusion element is arranged in a unitized housing to contact a rotating exclusion element so as to provide a primary barrier to dust and airborne contaminants. A secondary barrier is provided in the housing in the form of a porous filter element formed of a foam or felted material to further exclude and entrap contaminants.

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patent: 3606351 (1971-09-01), Hallerback
patent: 4049281 (1977-09-01), Bainard
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patent: 4208058 (1980-06-01), Wanner et al.
patent: 4440401 (1984-04-01), Olschewski et al.
patent: 4448426 (1984-05-01), Jackowski et al.
patent: 4555188 (1985-11-01), Neal
patent: 4674755 (1987-06-01), Colanzi et al.

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