Spark plug for an internal combustion engine and a method of mak

Details Spark plug for an internal combustion engine and a method of mak Spark plug for an internal combustion engine and a method of mak

1996-06-07

1998-10-13

Patel, Vip

Electric lamp and discharge devices

Spark plugs

Plural series gaps

313139, 313140, 313141, H01T 1346

Patent

active

058216758

ABSTRACT:
In a spark plug, a metal shell has first and second open ends. A ground electrode is formed in integral with the metal shell, provided on the first open end of the metal shell. An insulator has an axial bore, held in the metal shell. A center electrode in the bore of the insulator has a front end extending beyond the insulator. At least one row of intermediary electrode strips is arranged intermittently in a circumferential direction around an end portion of the insulator so as to form a series of spark discharge gaps circumferentially around the end portion of the insulator, and disposed between the ground electrode and the end portion of the center electrode.

REFERENCES:
patent: 1270437 (1918-11-01), Reppin
patent: 1353593 (1920-09-01), Jorgenson
patent: 1359358 (1920-03-01), Bartha et al.
patent: 1461405 (1923-07-01), Solomon
patent: 1621581 (1927-10-01), Clark
patent: 2129576 (1938-09-01), Gorny et al.
patent: 4272697 (1981-06-01), Wax
patent: 4973877 (1990-11-01), Suzuki et al.

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