Spark plug for internal combustion engines
US4394598A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1980 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Dec 1, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug for internal combustion engines, especially a spark plug deeply arranged in a spark plug recess of the engine. The spark plug includes a mounting portion, a center electrode, and an insulating body. An extension arrangement is adapted to be attached to the spark plug for facilitating access thereto. The extension arrangement includes a center electrode, an insulating body, and a tubular jacket. The tubular jacket is provided at a first end with an inner cross section corresponding to a cross section of the mounting portion of the spark plug, with the inner cross section being adapted to be mounted over the mounting portion of the spark plug. A second end of the tubular jacket is provided with a further mounting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.