Electric lamp and discharge devices – Spark plugs – Shaped electrode chamber – insulator end – shell skirt – baffle...
Patent
1988-05-16
1990-06-26
O'Shea, Sandra
Electric lamp and discharge devices
Spark plugs
Shaped electrode chamber, insulator end, shell skirt, baffle...
H01T 1336
Patent
active
049374842
ABSTRACT:
A coating layer made of a heat-proof insulating material is formed on the surface of a leg, exposed to the interior of the engine, of a ceramic insulator of a sparking plug. The coating is formed of a mixed solution of silicone oil blended with a mixture of parafin and ozokerite. The mixed solution contains 100 weight percent of silicone oil blended with paraffin by at least 5 weight percent and ozokerite by at least 0.2 weight percent.
REFERENCES:
patent: 4427914 (1984-01-01), Mizuno et al.
A Handbook of the Oil and Fats Chemical Products--A. Musuda & Editing Committee, pp. 403, 404 and rear page--Daily Industrial Press--Tokyo--Pub'd Oct. 30, 1963.
Nippondenso Co. Ltd.
O'shea Sandra
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