Spark plug with noble metal chip joined by unique laser...

Details Spark plug with noble metal chip joined by unique laser... Spark plug with noble metal chip joined by unique laser...

2007-04-03

2007-04-03

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

C313S118000

Reexamination Certificate

active

10901042

ABSTRACT:
A spark plug is provided which ensures the reliability of a weld between a noble metal chip and a ground electrode as well as higher durability and ignitability of fuel. The ground electrode is joined to a metal shell, after which the noble metal chip is laser-welded to the ground electrode. The laser welding is achieved by emitting laser beams around an interface between the noble metal chip and the ground electrode outside a given angular range within which the metal shell will be an obstruction to the traveling of the laser beams. Specifically, the laser beams are emitted without any optical interference with the metal shell. This permits the angle between the orientation of each of the laser beams and the surface of the ground electrode to be minimized regardless of the metal shell, thus ensuring a desired depth of the fused portions in the noble metal chip.

REFERENCES:
patent: 2002/0092835 (2002-07-01), Uchara
patent: 2002/0105254 (2002-08-01), Hori
patent: 1168542 (2002-01-01), None
patent: 2001-135456 (2001-05-01), None
patent: 2001-237365 (2002-08-01), None
French Preliminary Search Report dated Aug. 8, 2006.

Affiliated with

Also associated with

Rating

Spark plug with noble metal chip joined by unique laser... 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 with noble metal chip joined by unique laser..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spark plug with noble metal chip joined by unique laser... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3779437