Fire alarm without using electric power

Details Fire alarm without using electric power Fire alarm without using electric power

G - Physics

08

B

G08B 17/00 (2006.01) G08B 17/02 (2006.01) G10K 1/072 (2006.01)

Patent

CA 2087830

ABSTRACT: A fire alarm without using electric power, which comprises a housing, an alarm assembly and a switch assembly; a driving spring in the alarm assembly is used for storing a driving energy. As soon as a nylon string in the alarm is burnt and broken, the driving spring will drive small hammers to hit a bell cup to send out a warning signal to warn people that a fire is taking place.

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