Title:
SPARK PLUG
Document Type and Number:
WIPO Patent Application WO/2013/008371
Kind Code:
A1
Abstract:
Provided is a technology that ensures air-tightness and can inhibit gasket looseness. A spark plug is provided with a cylindrical body extending in the direction of an axis, and an annular gasket provided around the outside of the body. The gasket is solid, is composed mainly of copper, and contains at least 0.1% nickel by weight. The maximum thickness of the gasket in the direction of said axis is at least 0.4 mm, and the Vickers hardness of the gasket is between 30 and 150 HV.
Inventors:
SUZUKI AKIRA (JP)
Application Number:
PCT/JP2012/002640
Publication Date:
January 17, 2013
Filing Date:
April 17, 2012
Export Citation:
Assignee:
NGK SPARK PLUG CO (JP)
SUZUKI AKIRA (JP)
SUZUKI AKIRA (JP)
International Classes:
H01T13/08; F02P13/00
Foreign References:
| JP2006307835A | 2006-11-09 | |||
| JP2008135370A | 2008-06-12 | |||
| JP2008210681A | 2008-09-11 | |||
| JP2008210681A | 2008-09-11 | |||
| JPH11351393A | 1999-12-24 | |||
| JP4272682B2 | 2009-06-03 | |||
| EP1850432A2 | 2007-10-31 |
Other References:
ISO 11565, 2006
See also references of EP 2733797A4
See also references of EP 2733797A4
Attorney, Agent or Firm:
AOKI, Noboru et al. (JP)
Aoki 昇 (JP)
Aoki 昇 (JP)
Download PDF:
Claims: