Spark plug with improved noble metal chip
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 22, 2007
Grant Date -
Dec 2, 2004
app pub date -
May 27, 2004
filing date -
May 29, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a spark plug composed of a center electrode and an earth electrode, at least one of confronting portions of the center electrode and the earth electrode which are in opposed relation to each other is constructed with a noble metal chip containing Pt as a principal component. The noble metal chip is joined to an electrode base material of the center electrode or the earth electrode and is made of an alloy comprising Pt and another element. In this noble metal chip, Pt is contained as a first component, while Re is contained as a second component. The employment of this noble metal chip enables suppressing the growth of platinum balls even in a high-temperature atmosphere.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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