Pressurized extinguishant release device with rolling diaphragm
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United States of America Patent
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-
Oct 17, 1995
Grant Date -
N/A
app pub date -
Sep 9, 1993
filing date -
Sep 9, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressurized extinguishant release device with a rolling diaphragm includes a closed elongated sensor tube filled for example with 50% water and 50% ethylene glycol which terminates in an enclosure sealed by a circular head portion of the rolling diaphragm. On the other side of the head portion is a piston connected to a penetrator retained against the diaphragm by a shear pin. The penetrator is positioned above a brittle membrane which encloses a pressurized extinguishant. Heating of the liquid filled sensor tube to a certain temperature will cause a vapor pressure to push against the diaphragm head to cause the shear pin to fail propelling the penetrator into the membrane and thus allow the extinguishant to flow.
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