Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1994-05-09
1996-12-03
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219216, 219497, 219505, 34087017, 34087028, 355285, H05B 102
Patent
active
055804780
ABSTRACT:
Temperature control apparatus for controlling the temperature of an electrically heated moveable object such as an electrically heated rotatable drum. A temperature control mechanism, rotatably mounted in conjunction with the cylindrical drum and electrically coupled to the electrical heater, controls the temperature by controlling the flow of electricity to the electrical heater in response to control signals. A temperature sensor mechanism, rotatably mounted in conjunction with the cylindrical drum and electrically coupled to the temperature sensor, senses the temperature of the surface of the cylindrical drum and produces temperature signals indicative thereof. A microprocessor, non-rotatably mounted with respect to the cylindrical drum, controls the temperature of the electrically heated drum by generating the control signals in response to the temperature signals. An optical mechanism, coupled to the temperature control means, the temperature sensor means and the microprocessor means, optically couples the temperature signals from the rotating temperature sensor means to the non-rotating microprocessor means and optically couples the control signals from the non-rotating microprocessor means to the rotating temperature control means.
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Dunlop Victoria M.
Tanamachi Steven W.
Bauer William D.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Paschall Mark H.
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