Electrode for spark plug comprising ruthenium-based material
US10044172B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2013 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode material that may be used in spark plugs and other ignition devices including industrial plugs, aviation igniters, glow plugs, or any other device that is used to ignite an air/fuel mixture in an engine. In one embodiment, the electrode material is a ruthenium-based material that includes ruthenium (Ru) as the single largest constituent on a wt % basis, and at least one of rhenium (Re) or tungsten (W). The electrode material may further include one or more precious metals and/or rare earth metals. The electrode material may be used to form the center electrode, the ground electrode, firing tips, or other firing tip components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.