Electrical wiring and alarm system

Details Electrical wiring and alarm system Electrical wiring and alarm system

1974-08-07

1976-02-10

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340224, G08B 1308

Patent

active

039381218

ABSTRACT:
A three-wire electrical wiring and alarm system has a remotely located alarm device that is turned on whenever an alarm switch is actuated. The alarm device may be wired into the system or it may be operated by a radio signal broadcast from the premises to be protected. In either case an unauthorized intruder is not made aware that the alarm has been signalled. The system has a manual alarm switch and a plurality of intrusion alarm switches, each operated automatically when a corresponding window or door is opened. Manually operated selector switches are provided for disconnecting the alarm switches from power sockets in the wiring system and for selectively enabling the window and door switches. A timer keeps the alarm device on for a predetermined time period following the operation of an alarm switch.

REFERENCES:
patent: 2484092 (1949-10-01), Hopgood
patent: 3011163 (1961-11-01), Britt
patent: 3470554 (1969-09-01), Corbell
patent: 3514557 (1970-05-01), Jette, Jr.
patent: 3540043 (1970-11-01), Crosthwait
patent: 3543268 (1970-11-01), Jamison

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