Spark plug and method for its manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 14, 2004
Grant Date -
May 8, 2003
app pub date -
Oct 9, 2002
filing date -
Oct 9, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing spark plugs with central and body electrode(s) armed with noble metal inserts, in which the tip of a central electrode which is pyramid or conic shaped with a base diameter (d), is liquefied by being pressed against a noble metal ball with diameter (d) that is mounted in the face of a welding electrode under a defined welding contact pressure and defined welding parameters. The liquefied material of the central electrode tip partially flows around the noble metal ball, and the welding electrode is separated from the central electrode after the liquefied material of the central electrode tip has solidified with noble metal ball embedded therein.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully