Ignition plug
US4488081A · kind A · utility
25Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ignition plug of extended durability which reduces crack formation in noble metal layer on the center electrode and the ground electrode by joining a noblemental layer consisting of 85 to 70% by weight of Pt and 15 to 30% by weight of Ir to the spark discharge portion of the center electrode and also another noble metal layer consisting of 90 to 70% by weight of Pt and 10 to 30% by weight of Ni to the spark discharge portion of the ground electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.