Internally powered earthquake triggered and electrically controllable shutoff valve
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United States of America Patent
Stats
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Oct 14, 2014
Grant Date -
Jul 12, 2012
app pub date -
Jan 9, 2012
filing date -
Jan 7, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An earthquake triggered and electronically controlled shutoff valve for allowing or preventing a flow of a fluid. The shutoff valve incorporates a weight positioned on a pedestal and disengaged from a surrounding moveable tube. Upon sufficient vibrational force, the weight moves from its resting position on the pedestal and engages with the moveable tube to block the flow of the fluid through the shutoff valve. In addition to vibrational forces, the shutoff valve may be electronically triggered via a connector electrically connected to one or more solenoids positioned within the shutoff valve. The solenoids may engage with the weight upon electrical stimulation or may engage with a moveable member coupled to the moveable tube. An energy storage unit provides power for the solenoids such that the solenoids may function in the absence of external power to the shutoff valve.
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