Electrical appliance plug removal alarm

Details Electrical appliance plug removal alarm Electrical appliance plug removal alarm

1983-12-12

1986-04-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

200 511, 340638, G08B 2100

Patent

active

045845700

ABSTRACT:
A security system for motels and other properties such as offices and rental properties where small appliances such as television sets, radios, lamps and others are plugged into electrical outlets within rented rooms and which are easily removed by the rentor consists simply of a small disc placed between the appliance's electrical plug and the outlet and if removed, causes the breaker in the circuit feeding that outlet to blow. If a tenant tries to cut the wires without removing the electrical plug, the circuit breaker will also blow. With the circuit breaker blown the tenant must contact the motel manager in order to see what he is removing from the room. An alarm attached to the circuit breaker at the fuse panel sounds when that circuit has no power. The potential signals for separated breakers can be accumulated through a telemetry circuit and are sent to the central office, which will immediately dispatch a house security officer to stop the removal of the appliance or other piece of equipment.

REFERENCES:
patent: 4002397 (1977-01-01), Wang et al.
patent: 4009474 (1977-02-01), Eller
patent: 4189723 (1980-02-01), Hylton
patent: 4195290 (1980-03-01), Magil et al.
patent: 4263589 (1981-04-01), Lewiner et al.
patent: 4300130 (1981-11-01), Fotheringham et al.

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