Long life detector

Details Long life detector Long life detector

1994-11-23

1996-11-26

Hofsass, Jeffery

Communications: electrical

Condition responsive indicating system

Specific condition

340629, 340630, 340632, 340693, 200 6108, 200300, G08B 1710

Patent

active

055789960

ABSTRACT:
A long life, surface mountable ambient condition detector includes a non-replaceable battery for the purpose of providing power to the detector. The detector includes an activation switch mechanism having a one-time, or single use turn-on characteristic. The activation switch mechanism switches the battery once from a non-conducting state to a state of electrical conduction with a control unit of the detector. The switch mechanism may include a frangible member for switching the battery from the non-conducting state to the electrical conducting state. Until the detector has been energized, the frangible member blocks mounting of the detector on the surface.

REFERENCES:
patent: 2985741 (1961-05-01), Ellmann
patent: 4688021 (1987-08-01), Buck et al.
patent: 4901056 (1990-02-01), Bellavia et al.
patent: 5359168 (1994-10-01), Cunningham
patent: 5444434 (1995-08-01), Serby
Kodak & Dicon system team up to promote new long-life Lithium batteries and smoke detectors. New release, Dec. 1988.

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