Security timer device

Details Security timer device Security timer device

1977-07-14

1979-04-24

Schaefer, Robert K.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

307293, 3403091, H03K 513

Patent

active

041514262

ABSTRACT:
A solid state timer device useable for security purposes in homes, offices and other buildings. The device is engineered to plug into a conventional wall socket and to receive the inlet plugs of appliances such as lamps and radios. The device is programmed to connect intermittently, in the desired sequence and for desired periods, power from the wall plug to the electrical appliance in question so that the same will go on and off automatically over a period of time and then will remain off for another period of time before resuming the said subsequence of operation. Such switching of lamps and radios on and off, for example, will create the illusion of occupancy and is intended to discourage would-be burglars and prowlers.

REFERENCES:
patent: 3035187 (1962-05-01), Reichert
patent: 3491249 (1970-01-01), Rabinow
patent: 3979601 (1976-09-01), Franklin
patent: 3997742 (1976-12-01), Marquis

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