Shaft sealing assembly

Details Shaft sealing assembly Shaft sealing assembly

2005-05-03

2005-05-03

Pickard, Alison (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S583000

Reexamination Certificate

active

06886834

ABSTRACT:
A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrounding the hollow portion is elastically deformed. Accordingly, a lip portion of the first sealing member receives a tension that weakens a force pressing the lip portion against the rotary shaft. Therefore, the sealing assembly improves the durability of the lip portion and maintains a satisfactory property of the lip portion to follow displacement of the rotary shaft at the same time.

REFERENCES:
patent: 3168319 (1965-02-01), Paulsen
patent: 3637222 (1972-01-01), Wilkinson
patent: 4350347 (1982-09-01), Heinrich
patent: 4401306 (1983-08-01), Arnold
patent: 6513812 (2003-02-01), Yang et al.
patent: 6688603 (2004-02-01), vom Schemm
patent: 60 159298 (1985-08-01), None
patent: 60 175700 (1985-09-01), None
patent: 62 031774 (1987-02-01), None
patent: 09 303568 (1997-11-01), None
patent: 11 351406 (1999-12-01), None
patent: 2002-071028 (2002-03-01), None

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