Electric heating – Heating devices – Resistive element: igniter type
Patent
1990-09-10
1991-10-22
Bartis, Anthony
Electric heating
Heating devices
Resistive element: igniter type
123145A, 219541, 219544, 219553, 361266, H05B 300, F23Q 722, F02P 1900
Patent
active
050597680
ABSTRACT:
A ceramic heater type glow plug includes a U-shaped ceramic heater consisting of a resistive ceramic material, a hollow metal holder, an external connecting terminal, a power control resistor, and a connecting unit. The hollow metal holder has a distal end portion for supporting the ceramic heater via insulating members. The external connecting terminal is insulatingly supported at a rear end of the metal holder. The power control resistor is arranged between one of terminal caps at a rear end side of the ceramic heater housed in the metal holder and the external connecting terminal and performs power supply control with respect to the ceramic heater. The connecting unit connects another one of the terminal caps at the rear end side of the ceramic heater to the metal holder. The power control resistor consists of a metal material having a larger positive resistance temperature coefficient than that of the resistive ceramic material constituting the ceramic heater. The connecting unit includes a hollow metal sleeve for insulatingly housing the power control resistor. The rear end of the metal sleeve is caulked to the rear end of the metal holder while the external connecting terminal is fitted in the metal sleeve via an insulating member.
REFERENCES:
patent: 2914751 (1960-04-01), Masaka et al.
patent: 4650963 (1987-03-01), Yokoi
patent: 4725711 (1988-02-01), Minegishi et al.
patent: 4806734 (1989-02-01), Masaka et al.
patent: 4914274 (1990-04-01), Hatanaka et al.
Aota Takashi
Hatanaka Koji
Bartis Anthony
Hitachi Metals Ltd.
Jidosha Kiki Co. Ltd.
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