EP 0901150 A3 19990421 - Electrode, procedure and device for its manufacture

Title (en)

Electrode, procedure and device for its manufacture

Title (de)

Eleltrode und Verfarhen sowie Vorrichtung zur Herstellung derselben

Title (fr)

Electrode, procédé et dispositif pour sa fabrication

Publication

EP 0901150 A3 19990421 (DE)

Application

EP 98113037 A 19980714

Priority

DE 19738574 A 19970904

Abstract (en)

[origin: EP0901150A2] The electrode (4) is made of wolfram material, which may be doped and has cylindrical shaft (5) with a conical point (9) which is formed by radial deformation of the shaft, e.g. using radial hammering or transverse rolling, for increasing the hardness in the vicinity of the point.

IPC 1-7

H01J 61/073; H01J 9/02

IPC 8 full level

H01J 9/02 (2006.01); H01J 61/073 (2006.01)

CPC (source: EP US)

H01J 9/02 (2013.01 - EP US); H01J 61/073 (2013.01 - EP US)

Citation (search report)

[A] DE 4442161 C1 19960307 - BAYERISCHE METALLWERKE GMBH [DE]
[A] DE 325464 C 19200910 - HEINRICH LEISER DR
[A] DE 3701212 A1 19871015 - TOHO KINZOKU KK [JP], et al
[A] EP 0262005 A1 19880330 - EYQUEM SOC [FR]
[A] WO 9102393 A1 19910221 - FORD MOTOR CANADA [CA], et al
[DA] EP 0299230 A1 19890118 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
[A] FR 2271663 A1 19751212 - PHILIPS NV [NL]
[DA] DE 4229317 A1 19940303 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
[A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 250 (E - 1082) 26 June 1991 (1991-06-26)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0901150 A2 19990310; EP 0901150 A3 19990421; EP 0901150 B1 20040922; AT E277423 T1 20041015; CN 1151537 C 20040526; CN 1210360 A 19990310; DE 19738574 A1 19990311; DE 59811983 D1 20041028; HU 221580 B 20021128; HU 9802006 D0 19981028; HU P9802006 A2 19990628; HU P9802006 A3 20010328; JP H11135011 A 19990521; US 6109995 A 20000829

DOCDB simple family (application)

EP 98113037 A 19980714; AT 98113037 T 19980714; CN 98115132 A 19980626; DE 19738574 A 19970904; DE 59811983 T 19980714; HU P9802006 A 19980903; JP 24925798 A 19980903; US 12152298 A 19980723