Patent · US Active

Spark plug having firing pad

US9231379B2 · kind B2 · utility

0Cited by

20References

21Claims

0Family size

Inventors

Kevin J. Kowalski · Perrysburg, US
Nathan A. Thomson · Provo, US
Richard L. Keller · Whitehouse, US

Key dates

Filing date	Apr 28, 2015
Grant date	Jan 5, 2016
Priority date	—
Expiry date	Apr 28, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH01T21/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A spark plug has a shell, an insulator, a center electrode, a ground electrode, and a firing pad. The firing pad is made of a precious metal material and is attached to the ground electrode. The firing pad has a side surface at a peripheral edge that can be flush or nearly flush with a free end surface of the ground electrode. This construction can help improve ignitability and flame kernel growth of the spark plug during a sparking event, and can provide better thermal management at the attached ground electrode and firing pad.

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