Global Patent Index - EP 1068778 A1

EP 1068778 A1 20010117 - PLASMA TORCH WITH A MICROWAVE TRANSMITTER

Title (en)

PLASMA TORCH WITH A MICROWAVE TRANSMITTER

Title (de)

PLASMABRENNER MIT EINEM MIKROWELLENSENDER

Title (fr)

CHALUMEAU A PLASMA AVEC EMETTEUR HYPERFREQUENCE

Publication

EP 1068778 A1 20010117 (DE)

Application

EP 99920621 A 19990401

Priority

  • DE 19814812 A 19980402
  • EP 9902413 W 19990401

Abstract (en)

[origin: US6388225B1] A plasma torch with a microwave transmitter which, for example, is used to coat surfaces and to produce radicals. The plasma torch exhibits a minimal energy loss during the transmission of microwaves to the produced plasma flame. The plasma torch includes a waveguide for transmitted microwaves and has a coaxial conductor. An electrode is provided with a duct, and a nozzle provided on the other end of the duct, the end facing away from the waveguide, are arranged in the coaxial conductor in an essentially axial manner. The plasma flame is produced at the nozzle. A coupling element is arranged between the waveguide and the coaxial conductor. The electrode is connected to the coupling element via a mounting plate and an electrically insulating intermediate element in a gas tight, thermally insulated manner such that microwaves are permitted to pass through.

IPC 1-7

H05H 1/30

IPC 8 full level

H05H 1/46 (2006.01)

CPC (source: EP US)

H05H 1/46 (2013.01 - EP US)

Designated contracting state (EPC)

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

DOCDB simple family (publication)

US 6388225 B1 20020514; AT E232042 T1 20030215; CA 2327093 A1 19991014; DE 19814812 A1 19991014; DE 19814812 C2 20000511; EP 1068778 A1 20010117; EP 1068778 B1 20030129; ES 2192383 T3 20031001; WO 9952332 A1 19991014

DOCDB simple family (application)

US 64763100 A 20001002; AT 99920621 T 19990401; CA 2327093 A 19990401; DE 19814812 A 19980402; EP 9902413 W 19990401; EP 99920621 A 19990401; ES 99920621 T 19990401