Electrically conductive sealing mass for spark plugs
US6580202B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug with a metallic housing (10) is proposed, which has an insulator (11) embedded in the housing (10), in which a rod-shaped internal conductor device is disposed. The internal conductor device has a contact pin (13), a current-limiting erosion resistor (17), and a central electrode (14). A sealing material (16) secures the central electrode (14) in a sealed fashion in the insulator (11). The temperature resistant sealing material (16) essentially contains at least one metallic component and at least one ceramic component with a low thermal expansion, wherein the metallic component has a melting temperature that is higher than the operating temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.