Low-voltage type igniter plug having semi-conductor structure fo

Details Low-voltage type igniter plug having semi-conductor structure fo Low-voltage type igniter plug having semi-conductor structure fo

1989-06-05

1990-11-27

O'Shea, Sandra L.

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

313131R, H01T 1320, H01T 1339

Patent

active

049738771

ABSTRACT:
A low-voltage type igniter plug having semi-conductor structure for use in jet and other internal combustion engines comprising; the semi-conducting body mounted adjacent a spark-gap in electrically contact with both center and ground electrodes, and essentially consisting of silicon carbide particles less than 5 microns in average diameter, and alumina particles less than 1 micron in average diameter, the weight percentages of the silicon carbide particles ranging from 65 to 80, the weight percentages of the alumina particles ranging from 20 to 35, the silicon carbide particles and the alumina particles being mixed with an addition of suitable binder means, and hot pressed at the temperature above 1800 degrees Celsius, and at the pressure above 200 Kg/cm.sup.2.

REFERENCES:
patent: 2266318 (1941-12-01), Heller
patent: 2326028 (1943-08-01), Griffiths
patent: 2786158 (1957-03-01), Tognola
patent: 3558959 (1971-01-01), Ziemendorf
patent: 4007391 (1977-02-01), Baker

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