Thermal actuator for fire protection sprinkler head
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United States of America Patent
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Issued Date -
Oct 25, 2007
app pub date -
Mar 29, 2007
filing date -
Apr 4, 2006
priority date (Note) -
Abandoned
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Abstract
A thermally actuated valve assembly. In some embodiments, the assembly includes a source of pressurized fluid, the source having an outlet; a valve at the outlet; a strut maintaining the valve closed against force applied by the pressurized fluid; and a thermal actuator formed at least in part from shape memory material, the thermal actuator being movable from a first shape permitting the strut to maintain the valve closed and a second shape applying force to move the strut, thereby permitting the pressurized fluid to open the valve.
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