Title (en)

A spark plug with a ring-shaped ground electrode.

Title (de)

Zündkerze mit ringförmiger Masseelektrode.

Title (fr)

Bougie d'allumage avec électrode de masse annulaire.

Publication

EP 0167687 A1 19860115 (EN)

Application

EP 84304704 A 19840710

Priority

EP 84304704 A 19840710

Abstract (en)

Spark plug comprising a center electrode (21) and a ground electrode (22) having a discharging surface designed into a hollow round frame.

IPC 1-7

H01T 13/46; H01T 13/16; H01T 13/14; H01T 13/32

IPC 8 full level

H01T 13/14 (2006.01); H01T 13/16 (2006.01); H01T 13/32 (2006.01); H01T 13/46 (2006.01)

CPC (source: EP)

H01T 13/14 (2013.01); H01T 13/16 (2013.01); H01T 13/32 (2013.01); H01T 13/467 (2013.01)

Citation (search report)

• [X] US 2487535 A 19491108 - FERNANDEZ JOHN J
• [X] FR 2479588 A1 19811002 - GIRODIN MARIUS [FR]
• [X] US 4023058 A 19770510 - LARA JOSE HECTOR, et al
• [A] FR 39148 E 19310903
• [A] FR 1124091 A 19561003

Designated contracting state (EPC)

DE GB IT

DOCDB simple family (publication)

EP 0167687 A1 19860115

DOCDB simple family (application)

EP 84304704 A 19840710