Automatic reversible temperature responsive valve and fire sprinkler
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United States of America Patent
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Sep 9, 2014
Grant Date -
Mar 3, 2011
app pub date -
Feb 5, 2008
filing date -
Feb 9, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fire sprinkler including a generally tubular body having inlet and outlet ends is disclosed. The body defines a fluid flow passage extending between the inlet and the outlet such that the outlet is in fluid flow communication with the inlet. A magnetized member is disposed within the fluid flow passage and is movable between a first position wherein fluid flow communication between the outlet and the inlet is blocked and a second position wherein fluid flow communication between the outlet and the inlet is open. A temperature sensitive magnetic member is coupled to the body and has sufficient magnetic properties to attract the magnetized member below a predetermined temperature, thereby maintaining the magnetized member in the first position. The temperature sensitive magnetic member loses a sufficient percentage of its magnetic properties at and above the predetermined temperature, thereby allowing the magnetized member to move to the second position.
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