EP 0633637 A1 19950111 - A spark plug.
Title (en)
A spark plug.
Title (de)
Zündkerze.
Title (fr)
Bougie d'allumage.
Publication
Application
Priority
IT TO930494 A 19930706
Abstract (en)
The plug (1) has a layer (13) of fluorocarbon polymer on the surfaces (11) of the insulating element (3) which are directly exposed to the atmosphere near the central electrode (4) and/or which face the outer tubular metal body (2) so as to prevent the insulating element (3) from being fouled by carbon residues. <IMAGE>
IPC 1-7
IPC 8 full level
H01T 13/14 (2006.01); H01T 13/38 (2006.01)
CPC (source: EP)
H01T 13/14 (2013.01); H01T 13/38 (2013.01)
Citation (search report)
- [YA] EP 0390065 A1 19901003 - NGK SPARK PLUG CO [JP]
- [Y] EP 0497189 A2 19920805 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] US 4937484 A 19900626 - ISHINO YASUTAKE [JP]
- [A] DE 3152877 C2 19850814
- [XY] PATENT ABSTRACTS OF JAPAN vol. 13, no. 558 (E - 858)<3906> 12 December 1989 (1989-12-12)
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 0633637 A1 19950111; IT 1261082 B 19960508; IT TO930494 A0 19930706; IT TO930494 A1 19950106
DOCDB simple family (application)
EP 94110340 A 19940704; IT TO930494 A 19930706