Ceramic heater for a glow plug having tungsten electrode wires w

Details Ceramic heater for a glow plug having tungsten electrode wires w Ceramic heater for a glow plug having tungsten electrode wires w

1997-11-18

2000-01-11

Jeffery, John A.

Electric heating

Heating devices

Resistive element: igniter type

219544, 219541, 123145A, F23Q 700

Patent

active

06013898&

ABSTRACT:
A heater main body (300) obtained by connecting one-side ends (331, 341) of lead-out tungsten wires (33, 34) having a metal deposit (301), e.g., silver, to the ends (321, 322) of a U-shaped heating resistor (32) is embedded in a ceramic powder. The powder containing the heater main body (300) embedded therein is press-molded into a given shape and then sintered by hot pressing to thereby obtain a ceramic heating element (3) in which the other ends (332, 342) of the lead-out wires are exposed on the surface of the resultant sintered body.

REFERENCES:
patent: 4650963 (1987-03-01), Yokoi
patent: 5218183 (1993-06-01), Kimata
patent: 5362944 (1994-11-01), Hatanaka et al.
patent: 5852280 (1998-12-01), Mizuno
patent: 5883360 (1999-03-01), Tatematsu et al.

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