DRAIN SYSTEMS
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United States of America Patent
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N/A
Issued Date -
Sep 18, 2014
app pub date -
Mar 15, 2013
filing date -
Mar 15, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A drain valve comprising: a head; and a cantilevered spring coupled at one end to the head and at an opposite end to a portion of a drain system such that when the cantilevered spring is biased to a normally closed position, the head obstructs a hole. In some embodiments, the drain valve is installed in an aircraft fire suppression system. In yet other embodiments, the cantilevered spring has a variable radius serpentine cross section.
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