External negative electrode having a cambered shape

Details External negative electrode having a cambered shape External negative electrode having a cambered shape

1996-10-09

1998-10-27

O'Shea, Sandra L.

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313143, 123169EL, H01T 1320

Patent

active

058281614

ABSTRACT:
A cambered shape of an external negative electrode (11) of an internal combustion engine's spark plug so that a spark bridging the plug's spark gap (17) impinges first at the base region (14) and travels outward and around to initiate burn of almost 100% of available fuel. The cambered shape culminates with an end section (16) that is 1/4 of a sphere and has symmetry to the radial edge of a center electrode (13).

REFERENCES:
patent: 2120492 (1938-06-01), Graf
patent: 2314128 (1943-03-01), Coldwell
patent: 4268774 (1981-05-01), Forkum, Jr.
patent: 5373214 (1994-12-01), McCready
patent: 5461210 (1995-10-01), Matsutani et al.
patent: 5650687 (1997-07-01), van den Bogaert

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