Patent · US Active

Spark plug having a reduced physical volume

US8373337B2 · kind B2 · utility

0Cited by

5References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Kaiser · Köngen, DE
Hermann Kersting · Oelde, DE
Dirk Scholz · Stuttgart, DE

Key dates

Filing date	Jul 18, 2007
Grant date	Feb 12, 2013
Priority date	—
Expiry date	May 19, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01T13/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A spark plug for an internal combustion engine, including an electrical connecting arrangement on a connection-side end, an end on the combustion-chamber side pointing toward a combustion chamber, an insulator and a housing having a thread for attaching the spark plug to an engine component, a first sealing area and a second sealing area being provided between the insulator and the housing, the first sealing area being situated closer to the connection-side end and the second sealing area being situated closer to the end on the combustion-chamber side, a tool engagement area for transmitting a torque to the spark plug for fitting or removing the spark plug being situated in an area of the spark plug which lies between the connection-side end and the first sealing area.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.