Igniters

Details Igniters Igniters

1975-11-04

1977-02-08

Rolinec, R. V.

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

313138, H01T 1302

Patent

active

040073912

ABSTRACT:
A surface-discharge igniter having concentric electrodes includes a gap at its operative tip which separates one of the electrodes from the exposed semiconductive surface of a semiconductive pellet that is interposed concentrically with the two electrodes. The said one electrode, which may be either the inner or outer electrode, is connected electrically to the pellet at the bottom of the gap away from the operative tip, whereas the other electrode makes contact with the pellet at, and in the region of, the exposed surface but is otherwise insulated electrically from it. Where the gap separates the inner electrode from the semiconductive surface then the outer electrode may be flared inwardly to establish its electrical connection with that surface. On the other hand, where the gap separates the outer electrode from the semiconductive surface the inner electrode may be flared outwardly, or provided with a cap that extends outwardly across the surface, to establish the connection with it. Holes for draining the gap may be provided through the outer electrode, and the pellet, which may be of material including silicon-carbide particles, may be brazed to the electrodes.

REFERENCES:
patent: 3558959 (1971-01-01), Ziemendorf

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