Spark plug for internal combustion engines

Details Spark plug for internal combustion engines Spark plug for internal combustion engines

1982-03-04

1984-08-14

LaRoche, Eugene R.

Electric lamp and discharge devices

Spark plugs

Plural part center electrode lead-in

313141, 313142, H01T 1320

Patent

active

044659520

ABSTRACT:
A spark plug for internal combustion engines has center and grounded electrodes having surfaces disposed adjacent to a spark gap between the electrodes and directed to but spaced from each other and also have side faces converging toward the spark gap. Each of the electrodes is provided with a piece of a noble metal secured to the surface directed to the other electrode. The noble metal pieces provided on both electrodes define the spark gap therebetween.

REFERENCES:
patent: 2439590 (1948-04-01), Tognola
patent: 3868530 (1975-02-01), Eaton et al.
patent: 4015160 (1977-03-01), Lara et al.
patent: 4122366 (1978-10-01), von Stutterheim et al.

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