Security system for electrical appliances and other items with e

Details Security system for electrical appliances and other items with e Security system for electrical appliances and other items with e

1989-11-17

1991-01-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

With particular coupling link

180287, 307 102, 340426, 34082576, G08B 2100

Patent

active

049874063

ABSTRACT:
A security system for electrical appliances and other items with electrical circuitry includes a signal source operating within a predetermined zone. A receiver within the appliance or other item receives the signal and activates a circuit thereby permitting operability of the appliance or other item when the signal is received. The appliance or other item is disabled upon removal from the zone.

REFERENCES:
patent: 3907060 (1975-09-01), Burton et al.
patent: 4023138 (1977-05-01), Ballin
patent: 4672375 (1987-06-01), Mochida et al.
patent: 4740775 (1988-04-01), Price
patent: 4761645 (1988-08-01), Mochida
patent: 4791409 (1988-12-01), Reid
patent: 4811013 (1989-03-01), Akutsu
patent: 4897644 (1990-01-01), Hirano

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