Ignition device having an electrode tip formed from an iridium-based alloy
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 1, 2008
Grant Date -
Dec 30, 2004
app pub date -
Jul 23, 2004
filing date -
Jul 13, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ignition device such as a spark plug having ground and center electrodes, at least one of which includes a firing tip formed from an alloy containing iridium, rhodium, tungsten, and zirconium. With the inclusion of tungsten and zirconium in the alloy, the percentage of rhodium can be kept relatively low without sacrificing the erosion resistance or reduced sparking voltage of the firing tip. In one embodiment, the firing tip contains 2% rhodium, 0.3% tungsten, 0.02% zirconium, and the balance iridium.
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