EP 0518707 A3 19931118 - SPARK PLUG WITH A PLATINUM TIP ON ITS OUTER ELECTRODE
Title (en)
SPARK PLUG WITH A PLATINUM TIP ON ITS OUTER ELECTRODE
Publication
Application
Priority
JP 14209491 A 19910613
Abstract (en)
[origin: EP0518707A2] 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)
Citation (search report)
- [X] US 2296033 A 19420915 - HELLER WALTER F
- [A] DE 8811215 U1 19881020
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