Ultrafast thermal actuator

Details Ultrafast thermal actuator Ultrafast thermal actuator

1984-05-14

1986-03-25

Brown, David H.

Ordnance

Explosive operated apparatus

169 28, 169 42, F42C 1900, A62C 3708, A62C 3502

Patent

active

045775443

ABSTRACT:
Fast acting actuation system which is especially suitable for automatic sprinklers and other emergency devices. The system includes a fast-acting low mass thermally responsive element comprising a pair of thin metal strips soldered together, a percussion member such as a firing pin which is released when the solder in the thermally responsive element melts, and an actuator, preferably a radially expandable explosive actuator, which is initiated by the firing pin. The actuator when initiated causes rapid actuation of the automatic sprinkler or other device.

REFERENCES:
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"Fire Protection Handbook", 15th Ed., 1981, G. P. Kinnon, Natl. Fire Prevention Assoc., pp. 17-32 to 17-35.
"Novel Explosive Release Technique", J. T. M. Lee, 1981 Annual Meet. Pyrotechics & Explosives Appl. Sect., Nov. 1981.
Early Suppression-Fast Response: A Revolution in Sprinkler Technology in "Fire Journal" pp. 42-46, Jan. 1984.

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