Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2007-02-05
2008-10-14
Paschall, Mark H (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S121360, C219S121550, C219S496000, C219S494000, C266S087000, C373S018000
Reexamination Certificate
active
07435929
ABSTRACT:
Methods for monitoring a heat treating atmosphere supply a preselected gas atmosphere at a preselected temperature to a heat treating furnace. The preselected temperature is not greater than a temperature at which wustite (FeO) forms. The methods sense the preselected gas atmosphere and the preselected temperature and compute a computed ratio of gaseous hydrogen H2(g) to water vapor H2O (g) for the preselected atmosphere as a function of the sensed values.
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Blumenthal Robert N.
Melville Andreas T.
Furnace Control Corp.
Paschall Mark H
Ryan Kromholz & Manion S.C.
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