Spark plug having firing pad
US9318879B2 · kind B2 · utility
0Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug has a firing pad attached to a center electrode or a ground electrode by way of a fused portion. In one or more embodiments, the firing pad is composed of a precious metal material. The fused portion can be formed in such a way that a material composition thereof at a sparking surface of the firing pad has a greater percentage of the precious metal material than a material of the underlying electrode to which the firing pad is attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.