Electrical receptacle assembly with plug removal alarm

Communications: electrical – Condition responsive indicating system – Specific condition

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Details

200 511, 339113R, G08B 1302

Patent

active

041575423

ABSTRACT:
An alarm and outlet assembly for use in displaying small appliances and the like comprises a housing defining a plurality of female electrical outlet receptacles. A normally-closed switch is associated with each receptacle and is arranged to be operated into an open state upon engagement of a male electrical connector plug in the corresponding receptacle. Conductors are provided for supplying electrical power to the receptacle and the switches. The switches are defined by a pair of spaced contact conductors in the housing and, for each switch, a movable contact which is spring biased into bridging relation to the contact conductors. Each movable contact is carried on a reciprocable actuator having a head which, in the closed position of the switch, is positioned in the corresponding receptacle to be engaged and depressed by the body of a plug inserted into the receptacle, thus moving the movable contact out of bridging relation to the contact conductors. An alarm is responsive to closure of any of the switches to indicate such event.

REFERENCES:
patent: 3596265 (1971-07-01), Garland
patent: 3668601 (1972-06-01), McFarlin
patent: 4075617 (1978-02-01), Wireman

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