Fire Alarm control system

Details Fire Alarm control system Fire Alarm control system

1982-04-26

1984-10-16

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340506, 340528, 34030915, G08B 2300

Patent

active

044777981

ABSTRACT:
A fire alarm control system in which an electronic switch circuit is responsive to an increase input current signal generated by one or more fire detection devices. A local alarm is connected to the electronic switch circuit to indicate an alarm state. A delay timer circuit is connected to the electronic switch circuit and operated thereby to activate a remote alarm after a predetermined time delay. A manual two-position switch is movable to a silence position from its normal position within the time delay to disable the local and remote alarms and movable back to its normal position to cut off power to the detection devices and electronic switch means to unlatch the alarms. A further pair of manually operable switches are provided to instantaneously reactivate the disabled local and remote alarms when the two-position switch is in the normal position.

REFERENCES:
patent: 3760397 (1973-09-01), Taggart
patent: 4114147 (1978-09-01), Hile
patent: 4189719 (1980-02-01), Massa et al.

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