Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2005-12-13
2005-12-13
Paschall, Mark (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S499000, C219S483000, C359S199200, C307S117000
Reexamination Certificate
active
06974934
ABSTRACT:
An apparatus including a reference resistor for use with ratiometric temperature sensing of a device to be sensed. The resistive element has a resistance dependant upon a temperature of the device to be sensed and is electrically coupled to a reference resistor. The reference resistor is maintained at a substantially constant temperature by a temperature controller. A sensor circuit is electrically coupled to the resistive element and the reference resistor to sense their electrical parameters when a current passes through them.
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patent: 6231153 (2001-05-01), Elgee
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Carney Robert A.
Sprock Douglas A.
Thiesen David K.
Blakely , Sokoloff, Taylor & Zafman LLP
Paschall Mark
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