Method and apparatus for thermally activated sprinklers
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United States of America Patent
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Nov 10, 2015
Grant Date -
Oct 1, 2009
app pub date -
Mar 12, 2009
filing date -
Mar 13, 2008
priority date (Note) -
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Abstract
A sprinkler head including a sprinkler body with a passage for fluid and a seal mechanism sealing the passage, and a cage member. A frangible bulb extends between the cage member and the seal. A shape memory alloy element is associated with the frangible bulb and has a first configuration that fits within, about, or abutting the bulb and a second configuration at a predetermined temperature which breaks the frangible bulb releasing the fluid through the passage.
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