Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Patent
1980-08-11
1984-04-10
Demeo, Palmer C.
Electric lamp and discharge devices
Spark plugs
Particular electrode structure or spacing
313143, H01T 1320
Patent
active
044423756
ABSTRACT:
An electrical self-purification ignition plug comprising a porcelain insulator ignition leg provided at its end surface opposed to a grounded electrode with a conical depression, and a center electrode exposed to the base surface of said conical depression and made integral with said porcelain insulator.
REFERENCES:
patent: 1181425 (1916-05-01), Blattmann
patent: 2208178 (1940-07-01), Berstler
patent: 2296045 (1942-09-01), McDougal et al.
patent: 2604087 (1952-07-01), Gregory et al.
patent: 3133223 (1964-05-01), Mallory
patent: 3442693 (1969-05-01), Rea
patent: 3691419 (1972-09-01), Van Uum et al.
patent: 4110667 (1978-08-01), Hagen
Nishio Kanemitsu
Suzuki Yasuhiko
Takagi Shunichi
DeMeo Palmer C.
NGK Spark Plug Co. Ltd.
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