Combination heat-sensing fire detector

Details Combination heat-sensing fire detector Combination heat-sensing fire detector

1986-04-08

1988-03-08

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340521, 340589, G08B 1706

Patent

active

047301821

ABSTRACT:
In a combination heat-sensing fire detector provided with a differential diaphragm electric contact and a contact which operates at a predetermined temperature, a shape memory effect element is used as a device which operates at a predetermined temperature. The fire detector can generate a fire alarm without fail even when the ambient temperature rises very slowly.

REFERENCES:
patent: 4356478 (1982-10-01), Muggli et al.
patent: 4381503 (1983-04-01), Kobayashi

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