Spark plug having a recess formed in an electrode
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United States of America Patent
Stats
-
Apr 28, 2020
Grant Date -
Aug 1, 2019
app pub date -
Jan 28, 2019
filing date -
Jan 29, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spark plug is provided which includes a hollow cylindrical center electrode disposed inside a metal shell and a ground electrode joined to the metal shell. The ground electrode has an inner peripheral surface facing an outer peripheral surface of the center electrode. At least one of the outer periphery of the center electrode and the inner periphery of the ground electrode has formed therein at least one recess whose ends lies in a center-to-ground electrode facing region where the outer peripheral surface of the center electrode faces the inner peripheral surface of the ground electrode in a radial direction of the center electrode. This decreases voltage required by the spark plug to achieve discharge.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2019 Application Filing Year
- H01T Class
- 154 Applications Filed
- 129 Patents Issued To-Date
- 83.77 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01T Class
- 0 % this patent is cited more than
- 5 Age
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 28, 2027 |
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