Electric heating – Heating devices – Resistive element: igniter type
Reexamination Certificate
2007-05-29
2007-05-29
Robinson, Daniel (Department: 3742)
Electric heating
Heating devices
Resistive element: igniter type
C123S179600
Reexamination Certificate
active
11168534
ABSTRACT:
A ceramic heater which includes: a cylindrical substrate including an insulator; a resistor provided in one end side of the substrate; a pair of lead parts provided in the substrate, connected to the resistor and extending to an opposite end side of the substrate; and a pair of electrode parts exposed to a surface at an opposite end side of the substrate and connected respectively to the lead parts. Both lead parts are made of the same material as both electrode parts. An axial cross-sectional area of the electrode part is equal to or larger than a cross-sectional area of the lead part in a direction perpendicular to an axis of the ceramic heater.
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Konishi Masahiro
Matsui Takahiro
Sato Haruhiko
Suzuki Tetsuya
NGK Spark Plug Co. Ltd.
Robinson Daniel
Sughrue & Mion, PLLC
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