Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2005-05-03
2005-05-03
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S543000, C219S497000, C204S424000, C204S425000, C204S426000, C204S427000, C204S408000
Reexamination Certificate
active
06888109
ABSTRACT:
A heating device for a gas sensor, in particular for use in the exhaust gas analysis of internal combustion engines, including a heating element having an electrical resistor layer. The heating element is embedded in a first insulation which in turn is surrounded, at least in part, by a second insulation. The first and the second insulation have different porosities.
REFERENCES:
patent: 4859307 (1989-08-01), Nishizawa et al.
patent: 198 34 276 (2000-02-01), None
Diehl Lothar
Handler Torsten
Heimann Detlef
Lindauer Dieter
Seizinger Dietmar
Fuqua Shawntina
Kenyon & Kenyon
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