DR. WILLIAM DAN RILEY, D.C.
Chiropractic at Main St, Mooreville, MI

4861045, Aug 29, 1989

Jun 16, 1988

7/207822

William M. Riley - Milan MI

Mather Seal Company - Milan MI

F16J 1542

277 25

A dust excluder (12) for a seal assembly (10) such as utilized with a vehicle air conditioning compressor is disclosed as having an annular inner portion (36) that mounts on a rotatable compressor shaft (20) and as including an outer portion (38) that seals with an annular support (24) of the seal assembly axially outward from a shaft seal (30) in a manner that excludes dust to prevent seal abrasion without increased heating of the compressor shaft. The inner portion (36) of the dust excluder is preferably embodied by an annular body (56) having opposite axial ends (58,60) and the outer portion (38) is preferably embodied by a sealing section (62) having a disc (64) extending outwardly from the annular body (56) and by a sealing lip (66) extending outwardly from the disc for slidable engagement with the annular support (24). The sealing lip (66) is preferably inclined and has an edge junction that provides an annular line contact (68) with the annular support (24).

4943068, Jul 24, 1990

Jul 10, 1989

7/378442

Frederick R. Hatch - Ann Arbor MI
William M. Riley - Milan MI
Thomas M. Banks - Ypsilanti MI

Mather Seal Company - Milan MI

F16J 1532, F16J 1534, F16J 1544, F16J 1554

277 23

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.