Electric heating – Heating devices – Resistive element: igniter type
Patent
1987-03-09
1989-03-28
Bartis, Anthony
Electric heating
Heating devices
Resistive element: igniter type
123145A, 219543, 219553, 338308, 361366, 431208, H05B 300, F23Q 700, F02P 1902
Patent
active
048166430
ABSTRACT:
A glow plug has a heater member form by depositing a continuous metallic-silicide layer on the internal and external surfaces of a hollow open-ended cylindrical ceramic substrate. The metallic-silicide layer on the external surface of the substrate is electrically connected to a metal shell which supports one end of the heater member. An axial electrode disposed in the shell is electrically connected to the metallic-silicide layer disposed on the internal surface of the substrate and further serves together with a shoulder on the heater member to lock the heater member in the shell. The metallic-silicide resistive layer has a positive temperature coefficient of resistance and is substantially uneffected by micro-irregularities on the substrate surfaces to provide a cold resistance of from 0.2 to 0.6 ohms and is capable of responding to five amperes of current to develop a temperature of at least 800.degree. C. within five seconds.
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Engineering Application Data Sheet, Kanthal Corporation, Bethel, Connecticut.
Weber David C.
Zulauf Gary B.
Allied-Signal Inc.
Bartis Anthony
Decker Ken C.
McCormick Jr. Leo H.
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