Electric lamp or space discharge component or device manufacturi – Process – Spark plug or spark gap making
Patent
1989-05-03
1989-11-21
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Spark plug or spark gap making
148285, 148287, 148 16, 313130, H01I 1320, H01I 1339
Patent
active
048819131
ABSTRACT:
A spark plug has a center electrode and a side electrode made of an iron-base, heat resistant (iron, chromium, aluminum, rare earth) alloy. Each electrode has a precious metal insert of a composition that thermally matches the base alloy of the electrodes. The electrodes are made by a method which coats the electrodes with a protective coating to reduce operational oxidation and lead/oil deposit degradation of the interface between such iron based heat resistant alloys and an insert button in the center and side electrodes so as to extend the spark plug's life.
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General Motors Corporation
Ramsey Kenneth J.
Tung R. W.
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