Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Reexamination Certificate
2007-08-14
2007-08-14
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
Spark plugs
Particular electrode structure or spacing
C313S140000, C123S1690EL
Reexamination Certificate
active
10899665
ABSTRACT:
A spark plug includes a sparking electrode with a firing tip, and a ground electrode having an elongated member extending outwardly from the sleeve. The elongated member has an inner surface defining a generally circular hole. The inner surface forms a circle disposed generally in a plane transverse to and having a radial center coinciding with the central axis of the insulator body, whereby each differential segment of the inner surface radially thereabout is generally equidistant to the firing tip. The inner surface is a closest portion of the ground electrode relative to the firing tip. At least a portion of the inner surface of the elongated member opposing the firing tip has a radius of curvature of about that of the firing tip for providing a spark along a path of least resistance from the firing tip to a point on the opposing inner surface of the elongated member.
REFERENCES:
patent: 2489410 (1949-11-01), Hahn
patent: 2531638 (1950-11-01), Miller
patent: 2760099 (1956-08-01), Suter
patent: 2831138 (1958-04-01), Teasel
patent: 2871389 (1959-01-01), Skunda
patent: 2874322 (1959-02-01), Bychinsky
patent: 3202859 (1965-08-01), Knaggs
patent: 3229032 (1966-01-01), Willis
patent: 3394285 (1968-07-01), Lindsay
patent: 3538372 (1970-11-01), Terao
patent: 3706897 (1972-12-01), Shepardson
patent: 3958144 (1976-05-01), Franks
patent: 3988646 (1976-10-01), Atkins et al.
patent: 4374450 (1983-02-01), Warren et al.
patent: 4419601 (1983-12-01), Hamai et al.
patent: 5408961 (1995-04-01), Smith
patent: 5461276 (1995-10-01), Matsutani et al.
patent: 5892319 (1999-04-01), Rossi
patent: 5936332 (1999-08-01), Krupa et al.
patent: 6232704 (2001-05-01), Herweg et al.
patent: 6344707 (2002-02-01), Kibbey
patent: 6670740 (2003-12-01), Landon, Jr.
Guharay Karabi
McCormick Paulding & Huber LLP
LandOfFree
High electrical stiction spark plug does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High electrical stiction spark plug, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High electrical stiction spark plug will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3840919