Small diameter/long reach spark plug
US7508121B2 · kind B2 · utility
4Cited by
27References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2007 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug (10) having an elongated ceramic insulator (12) includes numerous design features in various strategic locations. At least the ground electrode (26) is fitted with a rimmed, hemispherical metallic sparking tip (56) which controls rogue electrical arcing (62) and facilitates attachment techniques due to increased surface contact with the ground electrode (26). The various features of the spark plug (10) cooperate with one another so that the physical dimensions of the spark plug (10) can be reduced to meet current demands of newer engines without sacrificing mechanical strength or performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.