Donald L Ulrich

US Patent:

50391127, Aug 13, 1991

Filed:

Nov 25, 1988

Appl. No.:

7/276125

Inventors:

Donald C. Ulrich - Collinsville IL
Roger Krause - Vandalia IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

B65D 5300
F02F 500
F16J 906

US Classification:

277 35

Abstract:

A multi-layer radial lip seal assembly adapted to be retained to the housing of an automotive air conditioning compressor and to be disposed about a rotatable shaft extending through a chamber provided in the housing. The lip seal assembly includes a first seal member or disc of virgin FEP adjacent to a second seal member or disc of graphite-filled PTFE. A retainer is provided to support the first and second seal members and an elastomer is molded to the retainer and seals the seal members to the retainer. The first seal member acts to protect the second seal member during installation and quickly wears away, so that the second seal member becomes the primary seal member.

US Patent:

59574615, Sep 28, 1999

Filed:

Sep 15, 1997

Appl. No.:

8/937269

Inventors:

Donald Charles Ulrich - Collinsville IL

Assignee:

John Crane Inc. - Morton Grove IL

International Classification:

F16J 1532

US Classification:

277569

Abstract:

A unitary radial lip seal assembly to provide a fluid tight seal between a shaft and a housing bore through which the shaft extends includes an annular rigid retainer, a resilient body portion secured to the retainer and defining at least one sealing lip to seal against the rotatable shaft and a sleeve bearing member supported by said seal assembly outboard of the sealing lip. In one form the bearing member is rigidly connected to the retainer, in another, it is resiliently mounted to provide shaft vibration dampening. In the latter embodiment, the bearing member includes a radial wall urged into frictional engagement with a radial wall of the resilient body to restrict rotation of the bearing member.