Electric lamp and discharge devices – Spark plugs – Non-conducting material in or adjacent gap
Patent
1981-10-08
1984-10-09
Moore, David K.
Electric lamp and discharge devices
Spark plugs
Non-conducting material in or adjacent gap
313131A, 313137, H01T 1302
Patent
active
044764120
ABSTRACT:
A spark plug having center and ground electrodes. One of the electrodes is covered with an insulator, a part of which includes outer and inner insulating layers. The outer insulating layer is formed of a heat-resistant and high voltage-resistant material. The inner insulating layer is formed of a material having a high dielectric constant and interposed between the outer insulating layer and the portion of the one electrode which is directed toward the other electrode.
REFERENCES:
patent: 2961563 (1960-11-01), Peras
patent: 4092558 (1978-05-01), Yamada
patent: 4337408 (1982-06-01), Sone et al.
patent: 4439707 (1984-03-01), Hattori et al.
Segall, Development of Low Voltage Shunted Surface Gap Spark and Igniter Plugs . . . , WadC Technical Report 55-191, Jan. 1955, pp. X-9.
Anonymous, Research Disclosure, No. 206, Jun. 1981, pp. 209-210, 20613 Spark Plug.
Hattori Tadashi
Nishida Minoru
Yanagisawa Takanori
Moore David K.
Nippon Soken Inc.
Nippondenso Co. Ltd.
Wieder K.
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