Spark plug with ground electrode plateau and method of making the same
US8766520B2 · kind B2 · utility
1Cited by
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19Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 4, 2013 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T21/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ground electrode is provided having a ground electrode body, the ground electrode body having an anchored end and a non-anchored end opposite the anchored end. The ground electrode includes a plateau extending from a surface of the ground electrode body adjacent the non-anchored end. In illustrative embodiments, the plateau is formed by removing a portion of the ground electrode body near the non-anchored end. The plateau is configured to be exposed around its periphery. A noble metal tip is fixably attached to the plateau.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.