Disc valve

Details Disc valve Disc valve

2006-11-14

2006-11-14

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C251S117000

Reexamination Certificate

active

07134452

ABSTRACT:
A disk valve comprises an inlet port, an outlet port, a first disk provided with a first through hole communicating with the inlet port and extending axially and a second through hole communicating with the outlet port and extending axially, and a second disk provided with a concave capable of communicating with the first through hole and the second through hole of the first disk on one end face and slidably and movably contacting one end face of the first disk at the one end face. A closed space is formed radially outside the second disk, and the second disk slides relative to the first disk to adjust the degree of overlap between the concave of the second disk and the first through hole of the first disk. The slidably and movably contacting part between the first disk and the second disk is self-lubricated. The disk valve further comprises a communication passage for always placing the first through hole into communication with the closed space radially outside the second disk. A portion of the one end face of the first disk adjacent to the part slidably and movably contacting the second disk opposes the closed space

REFERENCES:
patent: 2106942 (1938-02-01), Beehler et al.
patent: 2377473 (1945-06-01), Wolcott
patent: 4823841 (1989-04-01), Graber
patent: 5100565 (1992-03-01), Fujiwara et al.
patent: 5704588 (1998-01-01), Korfgen et al.
patent: 5934321 (1999-08-01), Miya et al.
patent: 6904935 (2005-06-01), Welty et al.
patent: 195 34 849 (1997-03-01), None
patent: 48-40489 (1973-11-01), None
patent: 4-302781 (1992-10-01), None
patent: 8-128541 (1996-05-01), None
patent: 8-159304 (1996-06-01), None
patent: 9-89124 (1997-03-01), None
patent: 2000-283302 (2000-10-01), None
International Search Report, completed Nov. 19, 2002.

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