Spark plug having an internal conductor configuration
US6380664B1 · kind B1 · utility
23Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Dec 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/41
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug having a tubular metallic housing in which an insulator is embedded, a rod-shaped internal conductor configuration being arranged in the insulator. The internal conductor configuration includes a terminal stud, a current-limiting resistor embedded in a conductive contact compound, a contact pin and a center electrode. The current-limiting resistor has two regions of unequal diameter. The diameter is smaller in the region nearer the combustion chamber than in the region farther from the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.