Fire alarm system

Details Fire alarm system Fire alarm system

1988-01-25

1989-07-25

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specified indicator structure

340692, G08B 300, G08B 2502

Patent

active

048518239

ABSTRACT:
A fire alarm system is installed in a building containing therein a large number of rooms such as inns, hotels, office buildings and the like. The system comprises fire detectors, microphones and speakers installed in different rooms and connected to an administration room, so that when one of the fire detectors is put into operation, the microphone and the speaker turn on and inform the administration room of the operation of the fire detector. A conversation can be exchanged between the administration room and the room in which the fire detector is put into operation.

REFERENCES:
patent: 3906491 (1975-09-01), Gosswiller et al.
patent: 4107464 (1978-08-01), Lynch et al.
patent: 4375637 (1983-03-01), Desjardins
patent: 4560978 (1985-12-01), Lemelson
patent: 4682348 (1987-07-01), Dawson et al.
patent: 4703312 (1987-10-01), Berry, III
patent: 4709330 (1987-11-01), Yokoi et al.

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