Spark plug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 2018
Issued Date -
N/A
app pub date -
Jul 27, 2017
filing date -
Aug 17, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A center electrode including an electrode base member having a cylindrical shape with a bottom and a core member embedded in the electrode base member. The core member has a thermal conductivity higher than that of the electrode base member. The center electrode includes a plurality of shoulder portions which each include a diameter reducing portion having a diameter that decreases toward a front end of the spark plug in a direction of an axial line, an outer side surface that extends in the direction of the axial line, and an edge disposed between the diameter reducing portion and the outer side surface. One of the shoulder portions closest to an inner surface of the axial hole has a cutting mark that extends in a circumferential direction over a region from the diameter reducing portion to the edge.
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