Thermally Activated Pressure Relief Valve
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United States of America Patent
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-
N/A
Issued Date -
Feb 12, 2009
app pub date -
Feb 6, 2006
filing date -
Feb 14, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The thermally activated pressure relief valve (10) has a piston (14) normally retained in a closed position and being movable to an open position in case the valve (10) is exposed to an abnormally high temperature. An elastic slotted spring sleeve (20) is disposed within a sleeve (18) of fusible material. In a non-activated state the fusible sleeve (18) maintains the spring sleeve (20) in a radially compressed condition wherein it has a smaller inner diameter effective to retain the piston (14) in the closed position. When the fusible sleeve (18) melts the spring sleeve (20) radially expands to a larger diameter permitting movement of the piston to the open position wherein it is partly received in the spring sleeve (20).
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