Magnetic valve with manual override

Details Magnetic valve with manual override Magnetic valve with manual override

2008-09-18

2011-12-13

Rivell, John (Department: 3753)

Valves and valve actuation

Electrically actuated valve

With nonelectrical actuator

C324S525000, C324S542000, C324S609000, C361S093100, C251S129150

Reexamination Certificate

active

08074961

ABSTRACT:
Proposed is a magnetic valve with manual override, through the actuating element of which a magnetic core that serves as a valve element or that is connected to a valve element can be shifted from an off position into an operating position without excitation of a magnetic coil system assigned to it. To detect the position of the magnetic core that is held in the operating position by the manual override there is provided a coil current monitoring device that monitors the rise of the coil current after the magnetic coil system has been switched on, which device has a detection device for detection of the absence of a drop in current as formed by movement of the magnetic core after being switched on and a signaling device for electrical signaling of a position of the magnetic core that is held in the operating position by the manual override if said drop in current is absent.

REFERENCES:
patent: 1898242 (1933-02-01), Chandler
patent: 3988664 (1976-10-01), Beery et al.
patent: 4422619 (1983-12-01), Griffiths
patent: 4494096 (1985-01-01), Fuzzell
patent: 4679017 (1987-07-01), Mishler et al.
patent: 4823825 (1989-04-01), Buchl
patent: 4871989 (1989-10-01), Gross
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patent: 4974622 (1990-12-01), Rader
patent: 5889405 (1999-03-01), Yanai et al.
patent: 6155654 (2000-12-01), Oyama
patent: 6262620 (2001-07-01), Jenski et al.
patent: 6985345 (2006-01-01), Hermann et al.
patent: 3941643 (1991-05-01), None

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