Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1996-04-26
1998-01-20
Gaffin, Jeffrey A.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 78, 361 87, 361 83, 364480, 364483, H02H 300, G01R 1900
Patent
active
057106916
ABSTRACT:
A programmable control unit for protecting an appliance connected to a household power source comprises a modular unit plugged into a household power socket. The modular unit presents a socket for plugging a household appliance therein. An internal microprocessor has program logic for analyzing the period of current flow to the household appliance and/or the power consumed thereby. Once the time period of operation and/or rate of energy consumption exceeds preselected values, the program logic of the microprocessor opens a relay so as to cease current flow to the appliance. The maximum threshold values of time and/or energy can be varied by the user according to the utilized appliance. The use of the intermediate unit enables a plurality of appliances to be safely coupled to the household power.
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Cummings Dale D.
Fowler David C.
Gaffin Jeffrey A.
Sherry Michael J.
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