Spark plug device

Electrical connectors – Having spark or glow plug cover

Patent

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Details

H01R 1344

Patent

active

056790112

ABSTRACT:
In a spark plug device, an ignition cable (11) and a spark plug body (13) connected to each other through a terminal fixture (12) are covered with a tubular plug cap (14), on which a cap (15) and a rain cap (16) are mounted at its respective ends, and a cylindrical cover (17) which is made of a conductive rubber compound or a synthetic resin compound containing neither aluminum nor calcium as an element is fitted in the inner peripheral surface of the plug cap (14) in a portion corresponding to the terminal fixture (12) to fill a gap external to the terminal fixture (12), whereby the spark plug device prevents corona discharge adjacent the terminal fixture and has excellent durability and reliable insulation.

REFERENCES:
patent: 2724092 (1955-11-01), Simpkins et al.
patent: 3803529 (1974-04-01), Rohrig et al.
patent: 5179327 (1993-01-01), Yagi et al.

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