Theft deterring apparatus

Details Theft deterring apparatus Theft deterring apparatus

1976-04-02

1977-06-07

Caldwell, John W.

Communications: electrical

Systems

Call station

200 51R, G08B 2100

Patent

active

040286916

ABSTRACT:
Theft of electrical appliances and the like is counteracted through provision of an alarm activated by removal of an electrical power line plug from an outlet by opening a normally closed or closing a normally open pair of contacts to gate a thyristor or relay and provide power through the thyristor or relay to a light, audible alarm or the like, the contacts being entirely hidden within the outlet. The alarm may also be activated by cutting a power line.

REFERENCES:
patent: 3090948 (1963-05-01), Cremer
patent: 3618065 (1971-11-01), Trip

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