EP 0518707 A2 19921216 - Spark plug with a platinum tip on its outer electrode.
Title (en)
Spark plug with a platinum tip on its outer electrode.
Title (de)
Zündkerze mit einem Platinstift auf seiner ausseren Elektrode.
Title (fr)
Bougie d'allumage ayant une pointe de platine sur son électrode extérieure.
Publication
Application
Priority
JP 14209491 A 19910613
Abstract (en)
In a spark plug which has a center electrode disposed in a metallic shell through an insulator so that a front end of the center electrode forms a spark gap with an outer electrode extended from the metallic shell, the outer electrode has a heat-conductive core metal cladded by a matrix metal which is made from nickel-based alloy containing 10 SIMILAR 20 wt% chronium. A platinum tip is welded to the outer electrode so that a spaced distance between a circumferential edge of the welded portion and a front end of the core metal falls within a range from 0.0 mm to 2.0 mm. <IMAGE>
IPC 1-7
IPC 8 full level
H01T 13/32 (2006.01); H01T 13/39 (2006.01)
CPC (source: EP)
H01T 13/32 (2013.01); H01T 13/39 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0518707 A2 19921216; EP 0518707 A3 19931118; EP 0518707 B1 19960515; DE 69210686 D1 19960620; DE 69210686 T2 19960919; JP 3226294 B2 20011105; JP H04366581 A 19921218
DOCDB simple family (application)
EP 92305477 A 19920615; DE 69210686 T 19920615; JP 14209491 A 19910613