Ceramic heater and method of securing a thermocouple thereto
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United States of America Patent
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Issued Date -
Nov 1, 2007
app pub date -
Apr 26, 2006
filing date -
Apr 26, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A ceramic heater is provided that includes a thermocouple having a hot or measuring junction in a form of a bead directly bonded to a ceramic substrate by an active brazing material. Alternatively, a metallized layer is provided on the ceramic substrate and the bead of the thermocouple is directly bonded to the metallized layer by an ordinary brazing material. Due to the direct bonding of the bead to a ceramic substrate, the temperature of the bead reflects the temperature of the ceramic heater almost instantaneously so that the thermocouple can more accurately measure the temperature of the ceramic heater.
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