Structure of spark plug designed to provide higher wear...

Details Structure of spark plug designed to provide higher wear... Structure of spark plug designed to provide higher wear...

2005-10-18

2005-10-18

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Plural series gaps

C313S141000, C123S1690PA

Reexamination Certificate

active

06956319

ABSTRACT:
A spark plug structure produces sparks between a second ground electrode and a center electrode when a porcelain insulator is stained with carbon. A wear resisting member is installed on a side wall of the center electrode for minimizing the wear of the side wall caused by the sparks to increase the useful life of the spark plug. A production method is also provided.

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