Seals

Details Seals Seals

2006-02-21

2006-02-21

McDowell, Suzanne E. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

C029S450000, C029S505000, C029S515000

Reexamination Certificate

active

07001565

ABSTRACT:
A composite seal face ring has an inner ring (60) made of material with good tribological properties, the inner ring (60) being pre-compressed by an outer ring (64) with a high tensile strength and a thermal coefficient of expansion substantially equal to that of the inner ring (60). The seal face ring is assembled by compressing the inner ring (60) and/or expanding the outer ring (64) by fluid under pressure, before inserting the inner ring (60) into the outer ring (64).

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patent: 4209884 (1980-07-01), Atkinson
patent: 4314704 (1982-02-01), Wichall
patent: 2003/0024095 (2003-02-01), Spielmannleitner
patent: 3428744 (1985-02-01), None
patent: 0404358 (1990-12-01), None
patent: 2296052 (1996-06-01), None

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