Spark plug requiring low discharge voltage and having high...

Details Spark plug requiring low discharge voltage and having high... Spark plug requiring low discharge voltage and having high...

2006-04-03

2009-06-02

Roy, Sikha (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

C313S011500, C313S142000

Reexamination Certificate

active

07541724

ABSTRACT:
A spark plug according to the present invention includes a metal shell, an insulator retained in the metal shell, a center electrode secured in the insulator, and a ground electrode. The center electrode includes a base member and a thin member thinner the base member. The ground electrode includes a base member fixed to the metal shell and a protruding member that protrudes from the base member and has an end face with an inner and an outer edge. When the insulator is clean, sparks can be discharged between the thin member and the inner edge. When the insulator is fouled with carbon, sparks can be discharged between the base member and the outer edge to self-clean the insulator. Dimensional parameters and relationships are specified in the spark plug, so that the spark plug can induce spark discharges with a low discharge voltage while securing an excellent self-cleaning capability thereof.

REFERENCES:
patent: 6552476 (2003-04-01), Hanashi et al.
patent: 6707237 (2004-03-01), Teramura et al.
patent: 7221078 (2007-05-01), Watanabe
patent: 2003/0193282 (2003-10-01), Shibata et al.
patent: 2005/0029915 (2005-02-01), Yorita et al.
patent: 38 72 027 (1988-04-01), None
patent: 699 00 064 (1999-09-01), None
patent: 10 2004 026 253 (2005-01-01), None
patent: 0 287 080 (1988-04-01), None
patent: 0 989 646 (1999-09-01), None
patent: 1 353 423 (2003-04-01), None
patent: 2004-006250 (2004-01-01), None
German Search Report, dated May 30, 2008, issued in corresponding German Appln. No. 10 2006 000 152.4-23, with English translation.

Affiliated with

Also associated with

Rating

Spark plug requiring low discharge voltage and having high... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spark plug requiring low discharge voltage and having high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spark plug requiring low discharge voltage and having high... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4118681