Temperature sensitive fire alarm unit

Communications: electrical – Condition responsive indicating system – Specific condition

Patent

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Details

116106, 169 23, 169 42, G08B 1706

Patent

active

047712708

ABSTRACT:
A simple, compact and inexpensive battery powered fire alarm unit has a normally closed spring-loaded electrical contact which is held open by a cermet metal strip, or the like, which is constructed to melt and fail at a predetermined high temperature level indicative of a fire condition. When the strip fails, the contact closes and connects an electrically activated sounder across the battery.

REFERENCES:
patent: 2710393 (1955-06-01), Golberg

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