Security power interrupt

Details Security power interrupt Security power interrupt

1993-12-27

1996-01-23

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307 40, 307 42, 307131, 307139, H01H 7124

Patent

active

054867258

ABSTRACT:
A security electrical interrupt device for preventing unauthorized usage of an electrical appliance such as an electric stove, while retaining operation of auxiliary electrical equipment such as the lights and an electrical clock. The device comprises a relay controlled by a micro-processor based programmable controller which measures the amount of electrical supply current being drawn by the appliance. A software computer program stored in the micro-controller commands the relay to disconnect the supply power if any person attempts to operate any part of the appliance which draws electrical current exceeding a preset limit while the controller is in the interrupt mode. The micro controller is programmed to enter the interrupt mode by 1) key sequences entered on a small detachable keypad, 2) when a programmed amount of time has elapsed since the last authorized usage, or 3) by removal of the detachable key pad. The micro-controller restores full supply power to the appliance by key sequences entered on the key pad.

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