Apparatus and method of manufacturing top and side firing spark

Details Apparatus and method of manufacturing top and side firing spark Apparatus and method of manufacturing top and side firing spark

1999-04-06

2000-09-19

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313118, 313123, 313139, 313140, 313143, 445 7, H01T 1320, H01T 1346, H01T 1300, P02M 5706

Patent

active

061217204

ABSTRACT:
A spark plug derives an extended lifetime because a large plurality of sharp edges are provided on the center electrode, the ground electrode, or both to enhance spark propagation. In a first embodiment, the ground electrode has a conventional cantilever shape, but the center electrode extends into coplanar relation to a distal surface of the electrode so that sparks propagate from the cylindrical side walls of the center electrode. In variations of the first embodiment, the number of cantilevered ground electrodes is increased, with the ground electrodes being circumferentially and equidistantly spaced about the center electrode. In another embodiment, the ground electrode has an annular configuration and includes a cylindrical annular wall spaced radially outwardly of the cylindrical sidewall of the center electrode, in concentric relation to the center electrode. Variations of the second embodiment include screw threads, knurls, and various projections formed on the ground electrode, the center electrode, or both.

REFERENCES:
patent: 1253584 (1918-01-01), Gerken
patent: 1325439 (1919-12-01), Dinger
patent: 1334135 (1920-03-01), Cuevas
patent: 1361326 (1920-12-01), Hachmann
patent: 1439791 (1922-12-01), Bovey
patent: 1465935 (1923-08-01), Eastman
patent: 2453048 (1948-11-01), Tognola et al.
patent: 2648320 (1953-08-01), Phillips et al.
patent: 3958144 (1976-05-01), Franks
patent: 4954743 (1990-09-01), Suzuki et al.
patent: 5502351 (1996-03-01), Katoh et al.

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