Sparkplug with antifouling coating on discharge end of insulator

Details Sparkplug with antifouling coating on discharge end of insulator Sparkplug with antifouling coating on discharge end of insulator

1981-07-20

1983-11-15

Demeo, Palmer C.

Electric lamp and discharge devices

Spark plugs

313143, H01T 1320

Patent

active

044158289

ABSTRACT:
A sparkplug having an improved antifouling performance and in which a decrease in insulation resistance is prevented, even if an electrically conductive material is deposited on the firing surface of the insulator of the sparkplug. In accordance with the invention, a coating of a solution of silicone and paraffin is formed on at least the portion of the firing surface of the porcelain insulator which is surrounded by the inner surface of the combustion chamber side of the metal casing of the sparkplug. Preferably, the coating is also formed on the inner surface of the metal casing.

REFERENCES:
patent: 4267483 (1981-05-01), Nakajima et al.
patent: 4337408 (1982-06-01), Sone et al.

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