Long life detector

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United States of America Patent

PATENT NO 5578996
SERIAL NO

08344744

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
FIRST NATIONAL BANK OF CHICAGO THEONE FIRST NATIONAL PLAZA CHICAGO IL 60670

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kondziolka, Thomas W Chicago, IL 4 60
Watson, Kalvin Chicago, IL 8 113

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