Electric heating – Heating devices – Resistive element: igniter type
Patent
1986-09-19
1988-01-12
Bartis, Anthony
Electric heating
Heating devices
Resistive element: igniter type
123145A, 219523, 219544, 219552, 219553, 361264, 420432, H05B 300, F02P 1900, F02B 908
Patent
active
047193310
ABSTRACT:
A ceramic glow plug in which a large resistance suitable for adapting the plug for use with a 24 V battery without having to use a thin or long heating wire. The glow plug includes a ceramic heater having a sintered ceramic body and a heating wire made of an alloy of a high melting point metal such as tungsten embedded in the ceramic body. The ceramic heater is secured to one end of a metal sheath with an outer end portion of the ceramic heater protruding from the end of the metal sheath by as small a distance as possible. A mounting shell receives the other end of the metal sheath. The heating wire is preferably made of a tungsten alloy containing 5 to 39 wt % rhenium to provide the desired resistance.
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Ito Masatoshi
Tanaka Katsuhiko
Bartis Anthony
NGK Spark Plug Co. Ltd.
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