Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2007-11-06
2007-11-06
Paschall, Mark (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S497000, C219S481000, C219S505000, C374S163000, C323S293000
Reexamination Certificate
active
11504790
ABSTRACT:
A controller for an electric article includes a voltage-stabilizing circuit for supplying voltage stable DC power, a microprocessor, a temperature-detecting circuit, a protecting circuit, a control circuit, and a switch circuit. The temperature-detecting circuit includes several comparators commonly connected to a temperature range switch. The protecting circuit includes a comparator that detects a pre-set highest heating temperature and that is connected to the voltage stable DC power and a voltage-detecting circuit of the voltage stable DC power. The comparator of the protecting circuit is further connected to a voltage-dividing end of a thermistor connected to a temperature-detecting wire. The control circuit is connected to the microprocessor and an output of the comparator of the protecting circuit. The switch circuit is connected to an output of the voltage stable DC power and the control circuit, thereby controlling conduction or cutting off DC power supply to the electric article.
REFERENCES:
patent: 5111026 (1992-05-01), Ma
patent: 5373141 (1994-12-01), Ko
patent: 5611952 (1997-03-01), Jones
patent: 6009369 (1999-12-01), Boisvert et al.
patent: 6191556 (2001-02-01), Galbraith et al.
Huang Ching-Lin
Ko Chin-Ta
Kamrath Alan
Kamrath & Associates P.A.
Paschall Mark
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