Power tool theft alarm

Details Power tool theft alarm Power tool theft alarm

1977-09-15

1979-04-24

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

Specific condition

340652, G08B 1300

Patent

active

041515218

ABSTRACT:
The internal impedance loads of a plurality of electrical appliances on display are directly connected in series through their power switches and power cords by a connector strip to form a detection circuit. Interruption of the detection circuit is sensed by a relay to activate a power operated alerting device. Continuity of the detection circuit is maintained by plugging all of the power cords into the connector strip and holding all of the power switches closed by removable binding tape or the like.

REFERENCES:
patent: 3127597 (1964-03-01), Lewin et al.
patent: 3253270 (1966-05-01), Downer

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