Rapid heat-dissipating type spark plug for internal combustion engines
US5017826A · kind A · utility
67Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Aug 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rapid heat-dissipating type spark plug has a metallic shell which is made of material having a tensile stress of more than 40 Kg/mm.sup.2 with a thermal conductivity of more than 60 W/m.multidot.k. In another embodiment, there is provided a ground electrode which is made of nickel or nickel alloy. The ground electrode is connected to the metallic shell through a metallic ring which is made of different metal from the metallic shell such as steel, stainless steel or nickel alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.