Seal ring for pendulum valve assembly

Details Seal ring for pendulum valve assembly Seal ring for pendulum valve assembly

2005-03-08

2005-03-08

Lopez, F. Daniel (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

C251S193000

Reexamination Certificate

active

06863256

ABSTRACT:
A valve assembly including a housing having a flow channel, a slide plate movable between a closed position and an opened position, and a seal ring surrounding the flow channel and engaging the slide plate in the closed position and disengaging the slide plate in the opened position. The seal ring has a plurality of bores aligned, respectively, with holes formed in an adjacent surface of the housing. Each bore includes an undercut defining a lip. A plurality of fasteners are arranged in the holes of the annular surface of the housing and extend into the corresponding bores of the seal ring. Side walls of the fasteners include slots, which catch on the lips of the bores of the seal ring when the fasteners are inserted into the bores of the seal ring, and the seal ring is rotated.

REFERENCES:
patent: 5577707 (1996-11-01), Brida
patent: 5873562 (1999-02-01), Marugg
patent: 6089537 (2000-07-01), Olmsted
patent: 6161576 (2000-12-01), Maher et al.
patent: 6328051 (2001-12-01), Maher
patent: 6409149 (2002-06-01), Maher, Jr.
patent: 6422607 (2002-07-01), Kirby

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