EP 2012397 B1 20160824 - Spark plug and method for its production
Title (en)
Spark plug and method for its production
Title (de)
Zündkerze und Verfahren zu ihrer Herstellung
Title (fr)
Bougie d'allumage et son procédé de fabrication
Publication
Application
Priority
- DE 102007031941 A 20070706
- DE 102007052266 A 20071102
Abstract (en)
[origin: EP2012397A2] The plug has an insulator (2) arranged in a body (1) that is made of base metallic materials, and an earth electrode (4) emanating from the body. A molded part (6) is welded to the earth electrode and is turned towards a central electrode (3), where the molded part is made from a set of noble metals. A spacer (9) is provided between the molded part and the earth electrode and is welded to the molded part and the earth electrode. The spacer is formed as a socket and has a thermal expansion co-efficient, which differs from the thermal expansion co-efficient of the earth electrode. An independent claim is also included for a method for reinforcing an earth electrode.
IPC 8 full level
H01T 13/32 (2006.01); H01T 21/02 (2006.01)
CPC (source: EP)
H01T 13/32 (2013.01); H01T 21/02 (2013.01)
Citation (examination)
- JP 2005203110 A 20050728 - NGK SPARK PLUG CO
- JP 2004186152 A 20040702 - NGK SPARK PLUG CO
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2012397 A2 20090107; EP 2012397 A3 20110406; EP 2012397 B1 20160824
DOCDB simple family (application)
EP 08012086 A 20080704