Concealed sprinkler with drop down deflector assembly, and improved fusible valve lever assembly
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United States of America Patent
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-
Dec 11, 1990
Grant Date -
N/A
app pub date -
May 25, 1989
filing date -
May 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A concealed sprinkler with drop down deflector assembly includes a pair of frame arms which resemble a tuning-fork, there being a gap between the free end portions of the arms. As a result, the arms are not subject to assembly loads or system pressure loads. The drop down deflector assembly is mounted on the end portions of the arms. A preferred valve assembly includes a valve and a compound lever arrangement for holding a rigid thermal responsive element, such as a frangible glass bulb, and for adjusting compressive pre-load on the valve without loading the frame arms.
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