Controller for a solenoid operated valve
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United States of America Patent
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Apr 19, 2011
Grant Date -
Jan 1, 2009
app pub date -
Jun 26, 2008
filing date -
Jun 28, 2007
priority date (Note) -
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Abstract
A controller moves a solenoid operated valve with a first solenoid operating pulse during a travel time. After a time interval, the controller applies a second pulse, which moves the valve towards its original position. The time interval may be varied, and a characteristic indicative of the return of the valve to the original position may be detected based on a comparison of the pulses.
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