Patent · US Expired

Spark plug for an internal combustion engine

US6559578B1 · kind B1 · utility

8Cited by

9References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Werner Herden · Gerlingen, DE
Rudolf Pollner
Thomas Brinz · Bissingen, DE
Ulrich Eisele · Stuttgart, DE
Andreas Niegel · Kornwestheim, DE

Key dates

Filing date	Mar 20, 2000
Grant date	May 6, 2003
Priority date	—
Expiry date	Mar 20, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH01T13/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A spark plug having a tubular metallic housing has an internal conductor arrangement including a refractory erosion. The refractory erosion resistor is designed either as a wound wire resistor or a filament-like thin-layer resistor.

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