Devices and methods for controlling the release of a substance
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United States of America Patent
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-
Oct 16, 2007
Grant Date -
Oct 6, 2005
app pub date -
Mar 14, 2005
filing date -
Mar 30, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Valves for controlling the release of a substance, include a housing having an inlet for connection to a source of the substance, an outlet, and a passage extending therebetween. The passage is enclosed by a ceramic disc and means are provided to apply an electrical pulse to the disc to break the disc and so connect the inlet to the outlet. The methods include containing the substance in a container, connecting the container to a valve; and applying an electrical pulse to the disc to break the disc and connect the inlet to the outlet. The valves and methods are particularly suited, but not limited, to the control of substances such as pressurised fire extinguishing media.
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