Electric heating – Heating devices – Resistive element: igniter type
Patent
1988-05-27
1990-05-29
Bartis, Anthony
Electric heating
Heating devices
Resistive element: igniter type
123145A, 219541, 219553, F23Q 722, F02P 1902, H05B 300
Patent
active
049298135
ABSTRACT:
A diesel engine glow plug having an elongated hollow electrically conductive holder, which holds a rod-like ceramic heater at one end thereof such that one end of the heater extends outside the holder. An external connecting terminal is positioned in the other end of the hollow holder and electrically insulated from the hollow holder. The ceramic heater is a U-shaped heating element with a pair of parallel lead portions made of a resistive ceramic material extending backward from both ends of the U-shaped heating element and arranged such that the outer surfaces of the lead portions are held by the distal end of the holder through electrical insulating layers between the inner surface of the holder and the outer surface of the lead portions. The rear end portions of the lead portions are electrode extraction ends wherein the electrode extraction end of one lead portion is electrically connected to the external connecting terminal through a conductive material and the electrode extraction end of the other lead portion is connected to the metal pipe which itself is electrically connected to the holder through a conductive material.
REFERENCES:
patent: 4475029 (1984-10-01), Yoshida et al.
patent: 4653443 (1987-03-01), Fukazawa et al.
patent: 4806734 (1989-02-01), Masaka et al.
patent: 4810853 (1989-03-01), Maruta et al.
Hatanaka Koji
Maruta Kenji
Masaka Mitusuke
Okazaki Seiji
Bartis Anthony
Hitachi Metals Ltd.
Jidosha Kiki Co. Ltd.
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