Spark plug and method for manufacturing the same
US11398717B2 · kind B2 · utility
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7Claims
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Assignee
Inventor
Key dates
| Filing date | Aug 17, 2021 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Aug 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T21/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug includes a terminal electrode extending in an axial direction of the spark plug. The terminal electrode has an end in the axial direction, and has a recess formed in the end of the terminal electrode. The recess has a bottom surface and an identifier on the bottom surface. The recess has a side surface parallel to the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.