Electric heating – Heating devices – Resistive element: igniter type
Reexamination Certificate
2005-08-23
2005-08-23
Jeffery, John A. (Department: 3742)
Electric heating
Heating devices
Resistive element: igniter type
C219S260000, C219S541000, C361S264000
Reexamination Certificate
active
06933471
ABSTRACT:
Robust ceramic igniters are provided that include an improved sealing system which can significantly enhance operational life of the igniter. Preferred igniters comprise a conductive cold zone and hot zone with higher resisitivity. A hermetic sealant material covers one or more electrical connections on the of each cold zone, thus shielding the electrical connections from environmental exposure, and thereby avoiding igniter failure resulting from electrical shorts and/or undesired oxidation.
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Hamel Scott M.
Pietras John D.
Corless Peter F.
Crosby Mike W.
Edwards & Angell LLP
Jeffery John A.
Saint-Gobain Ceramics & Plastics, Inc.
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