Igniter plug particularly for use in very low temperature liquid fuel
US4980601A · kind A · utility
7Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Apr 24, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An igniter plug is provided with a metallic shell, an insulator located within the metallic shell and a center electrode within the inner bore of the insulator. The front end of the electrode extends outside beyond the front end of the insulator. The insulator is made from sintered ceramic material which includes silicon nitride in an amount in the range 85-99% by weight. The front end of the insulator is axially retracted interiorally from the front end of the metallic shell from about 1.5 to about 2.5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.