Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Reexamination Certificate
2008-08-28
2011-10-25
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
Spark plugs
Particular electrode structure or spacing
C313S011500, C313S118000
Reexamination Certificate
active
08044561
ABSTRACT:
A spark plug, a center electrode therefore and method of construction is provided. The spark plug has a generally annular ceramic insulator extending between a terminal end and a nose end. A conductive shell surrounds at least a portion of the ceramic insulator and a ground electrode having a ground electrode sparking surface is operatively attached to the shell. An elongate center electrode has a body extending between opposite ends, wherein the body is compacted and sintered of a conductive or semi-conductive ceramic material. One of the electrode ends provides a center electrode sparking surface to provide a spark gap between the center electrode sparking surface and the ground electrode sparking surface.
REFERENCES:
patent: 3673452 (1972-06-01), Brennen
patent: 3725715 (1973-04-01), Krow
patent: 4261085 (1981-04-01), Nishio
patent: 4369343 (1983-01-01), Sone et al.
patent: 4396855 (1983-08-01), Imai et al.
patent: 4400643 (1983-08-01), Nishio et al.
patent: 4406968 (1983-09-01), Friese
patent: 4427915 (1984-01-01), Nishio
patent: 4519784 (1985-05-01), Pollner
patent: 4659960 (1987-04-01), Toya
patent: 4713582 (1987-12-01), Yamada et al.
patent: 5493171 (1996-02-01), Wood et al.
patent: 6533628 (2003-03-01), Matsutani
patent: 2005/0284859 (2005-12-01), Konishi
patent: 2007/0080618 (2007-04-01), Torii et al.
patent: 2008/0143229 (2008-06-01), Walker
patent: 2010/0052497 (2010-03-01), Walker
patent: 2010/0052498 (2010-03-01), Walker, Jr.
patent: 2010/0052499 (2010-03-01), Walker, Jr.
Lykowski James D.
Walker, Jr. William J.
Dickinson Wright PLLC
Federal-Mogul Ignition Company
Patel Nimeshkumar D.
Raleigh Donald
Stearns Robert L.
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