Spark plug with 360 degree firing tip

Details Spark plug with 360 degree firing tip Spark plug with 360 degree firing tip

1996-03-12

1998-03-24

O'Shea, Sandra L.

Electric lamp and discharge devices

Spark plugs

Electrodes are pure figures of revolution about plug axis

313141, H01T 1320

Patent

active

057316554

ABSTRACT:
A novel spark plug with an outer annular electrode and an inner electrode includes a disk-shaped element supported atop the inner electrode. The gap between the outer electrode and the disk-shaped element of the inner electrode defines an annular firing zone within which the spark travels from the outer electrode to the inner electrode. The disk-shaped inner electrode is solid and planar, and overlies the outer electrode. The disk may be provided with a lip of hardened alloy material which extends in the direction of the outer electrode. The lip can have a rectangular cross-section or a triangular cross-section, and the gap between the inner and outer electrodes can be adjusted, either at the time of assembly or later.

REFERENCES:
patent: 1322703 (1919-04-01), Lewis
patent: 1499594 (1924-06-01), Riley
patent: 2073865 (1937-03-01), Bushey
patent: 2900546 (1959-08-01), Russell
patent: 4402036 (1983-08-01), Hensley et al.
patent: 4695758 (1987-09-01), Nishida et al.

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