Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Discharge device load
Patent
1986-04-03
1987-12-15
Moore, David K.
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Discharge device load
315 71, 313118, 252513, 252516, 252519, H01B 106, H01T 1302
Patent
active
047135824
ABSTRACT:
A spark plug having an improved radio noise suppression effect and durability of the resistor. The resistor of the spark plug is made of a sintered material comprising by weight, 0.9-3.0% of one of TiN, TiC, WC, TiB.sub.2, ZrC, HfC, SiC, TaC, MoSi.sub.2 and mixtures thereof, 9-40% of fine glass powder having a larger grain size than that of said conductive material, not more than 20% of magnetic substance, and 60-90% of coarse glass powder having a larger grain size than that of the fine glass powder. The composition is free of elemental carbon.
REFERENCES:
patent: 3995184 (1976-11-01), Insley
patent: 4345179 (1982-08-01), Asai et al.
patent: 4601848 (1986-07-01), Sakai et al.
Atsumi Morihiro
Yamada Manabu
Yamaguchi Shunzo
Yoshida Ichirou
Moore David K.
Nippondenso Co. Ltd.
Powell Mark R.
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