Spark plug having multi-layer sparking component attached to ground electrode
US9368943B2 · kind B2 · utility
0Cited by
16References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 7, 2014 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Mar 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug having a metal shell, an insulator, a center electrode, a ground electrode, and a multi-layer sparking component. The multi-layer sparking component is attached at a firing end of the ground electrode and includes a thin precious metal layer formed overtop a base metal layer and, according to some embodiments, overhangs the end of the ground electrode. The precious metal and base metal layers may be pre-manufactured together as a bi-metal ribbon, sheet or laminate before the multi-layer sparking component is attached to the ground electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.