Seal apparatus

Details Seal apparatus Seal apparatus

2007-07-31

2007-07-31

Mah, Chuck Y. (Department: 3677)

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

C277S410000, C277S421000, C277S412000

Reexamination Certificate

active

11166727

ABSTRACT:
A seal (40) provides sealing between two pressure zones (60, 62) and a rotating and non-rotating member (42, 52) by providing a first sealing member (46) between two seal lands (48, 50). A second seal (64) is mounted between the non-rotating member (52, 58) and one of the seal lands (50, 66) so as to control pressure around the seal lands (48, 50).

REFERENCES:
patent: 3971563 (1976-07-01), Sugimura
patent: 4434987 (1984-03-01), Albers et al.
patent: 5064205 (1991-11-01), Whitford
patent: 5137286 (1992-08-01), Whitford
patent: 5603510 (1997-02-01), Sanders
patent: 5700011 (1997-12-01), Bainachi et al.
patent: 6220602 (2001-04-01), Webster et al.
patent: 6431550 (2002-08-01), Tong

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