Emergency lighting and fire detector system

Details Emergency lighting and fire detector system Emergency lighting and fire detector system

1977-11-21

1981-03-10

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

307115, 307130, 328270, 340584, 340663, 362183, G08B 1706

Patent

active

042557461

ABSTRACT:
A home safety unit having an emergency light system for providing light in the event of a power failure or the detection of a fire condition, and a fire detection system for providing an alarm indicating the existence of a fire. The safety unit is designed to have an aesthetically pleasing appearance and to be installed inconspicuously between the base of an existing light fixture and a wall or ceiling. Installation of the safety unit is a simple process, whether installing it when constructing a new building or by retro-fitting it into an existing building.
A modified light switch having parallel impedance across the light switch terminals is installed to provide continuous power to the safety unit when the switch is in its off position. Also included is a low voltage dropout system for disconnecting the auxiliary lights when the battery voltage falls below a certain level and for providing an audible alarm indicating this low voltage condition.

REFERENCES:
patent: 2523180 (1950-09-01), Anderson
patent: 3339105 (1967-08-01), Busse
patent: 3495130 (1970-02-01), Bruner et al.
patent: 3587095 (1971-06-01), Earling
patent: 3798369 (1974-03-01), Dietch
patent: 3882401 (1975-05-01), Cleland
patent: 3956669 (1976-05-01), Del Ciello
patent: 4090178 (1978-05-01), Norris
patent: 4093943 (1978-06-01), Knight

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