Valve device

Details Valve device Valve device

2008-01-22

2008-01-22

Huson, Gregory (Department: 3753)

Valves and valve actuation

Permanent or constantly energized magnet actuator

C251S063400, C137S523000

Reexamination Certificate

active

07320456

ABSTRACT:
A valve element for opening and closing a flow path can be reliably set to an opening position and a closing position. The valve element for opening and closing a communication opening portion communicating with an inflow hole and an outflow hole is provided in a valve receiving chamber formed in a valve block, and a valve magnet is provided in the valve element. A driving magnet can be moved to approach to and separate from the valve element by a pneumatic cylinder. When the driving magnet approaches to the valve element, the valve element moves to a closing position where the communication opening portion is closed. When the driving magnet separates from the valve element, the valve magnet provided in the valve element is attracted to a magnetic member, so that the valve element is kept at an opening position where the communication opening portion is opened.

REFERENCES:
patent: 4705070 (1987-11-01), Eidsmore
patent: 4792113 (1988-12-01), Eidsmore
patent: 5445184 (1995-08-01), Racine et al.
patent: 5807085 (1998-09-01), Yajima
patent: 6164322 (2000-12-01), Najmolhoda et al.
patent: 8-285125 (1996-11-01), None
patent: 2003-148353 (2003-05-01), None
patent: 1988-7956 (1988-08-01), None
patent: 0075948 (1993-08-01), None

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