Composite ceramic electrode and ignition device therewith
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United States of America Patent
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Feb 26, 2013
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N/A
app pub date -
Oct 24, 2011
filing date -
Aug 29, 2008
priority date (Note) -
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Abstract
A spark plug, center electrode and method of construction is provided. The spark plug has a generally annular ceramic insulator and a conductive shell surrounding at least a portion of the ceramic insulator. A ground electrode is operatively attached to the shell, with the ground electrode having a ground electrode sparking surface. A center electrode has an elongate body with a center electrode sparking surface. The center electrode sparking surface and the ground electrode sparking surface provide a spark gap. The center electrode body is constructed of a composite material including at least one ceramic material.
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