EP 1158632 B1 20040414 - Center electrode with noble metal reinforcement
Title (en)
Center electrode with noble metal reinforcement
Title (de)
Mittelektrode mit Edelmetallarmierung
Title (fr)
Electrode centrale munie d'un armement en métal noble
Publication
Application
Priority
DE 10025048 A 20000523
Abstract (en)
[origin: JP2002008820A] PROBLEM TO BE SOLVED: To provide an intermediate electrode with long expected practical service life, favorable cold-startability, and low demand voltage even after a long time of engine operation. SOLUTION: The intermediate electrode has an ignition tip 2a tapered with respect to an intermediate electrode body 1/2. A noble metal wire 3 having a cross section corresponding to the ignition tip is flatly welded to the ignition tip 2a, and the noble metal wire 3 is cut at a desired height H so as to provide a sharp edge. An alloy part 6 may be formed by soldering a contact part of the ignition tip 2a and a cut piece 3a of the noble metal wire 3 from outside by radiation soldering, or favorably laser soldering.
IPC 1-7
IPC 8 full level
H01T 13/20 (2006.01); H01T 13/39 (2006.01); H01T 21/02 (2006.01)
CPC (source: EP US)
H01T 13/39 (2013.01 - EP US); H01T 21/02 (2013.01 - EP US); Y10T 29/49149 (2015.01 - EP US); Y10T 29/49174 (2015.01 - EP US); Y10T 29/49179 (2015.01 - EP US); Y10T 29/49204 (2015.01 - EP US); Y10T 29/49213 (2015.01 - EP US); Y10T 29/49218 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1158632 A1 20011128; EP 1158632 B1 20040414; AT E264556 T1 20040415; DE 10025048 A1 20011206; DE 50101953 D1 20040519; ES 2214353 T3 20040916; JP 2002008820 A 20020111; JP 4748493 B2 20110817; US 2002014005 A1 20020207; US 2003205957 A1 20031106; US 6705009 B2 20040316; US 6833658 B2 20041221
DOCDB simple family (application)
EP 01102256 A 20010131; AT 01102256 T 20010131; DE 10025048 A 20000523; DE 50101953 T 20010131; ES 01102256 T 20010131; JP 2001138009 A 20010508; US 45220903 A 20030603; US 82835701 A 20010409