Patent · US Expired

Spark plug having a creepage spark gap

US5731654A · kind A · utility

22Cited by

8References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Walter Benedikt
Manfred Vogel · Ditzingen, DE
Dittmar Klett · Freiberg am Neckar, DE
Werner Herden · Gerlingen, DE

Key dates

Filing date	Jan 19, 1996
Grant date	Mar 24, 1998
Priority date	—
Expiry date	Jan 19, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH01T13/52
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A spark plug (10), for example for an internal combustion engine, having at least one center electrode (11) (high-voltage electrode) and at least one earth electrode (12), and an insulating spark plug insulator (13) and a creepage spark gap (14) between the center electrode (11) and the earth electrode (12). The creepage spark gap (14) has a pattern of islands comprising electrically-conductive material (16) which are insulated with respect to one another and are located on the outer surface zone of the spark plug insulator (13) or on the surface zone of an insulating material wafer (17) attached to outer surface of the insulator (13) of the spark plug (10).

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