Electric lamp and discharge devices – Electrode and shield structures
Reexamination Certificate
2008-08-29
2011-10-25
Patel, Ashok (Department: 2889)
Electric lamp and discharge devices
Electrode and shield structures
C313S141000, C313S352000
Reexamination Certificate
active
08044565
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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International Search Report for PCT/US2009/054154 dated Mar. 31, 2010, 2 pages.
Lykowski James D.
Walker, Jr. William J.
Federal-Mogul Ingnition Company
Patel Ashok
Reising Ethington P.C.
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