(19)
(11) EP 0 423 242 A1

(12)

(43) Date of publication:
24.04.1991 Bulletin 1991/17

(21) Application number: 89909610.0

(22) Date of filing: 11.08.1989
(51) International Patent Classification (IPC): 
H05H 1/ 34( . )
B23K 28/ 00( . )
C03B 29/ 02( . )
H05H 1/ 44( . )
 B23K 10/ 00( . )
C03B 23/ 043( . )
C03B 37/ 15( . )
H05H 1/ 48( . )
(86) International application number:
PCT/HU1989/000040
(87) International publication number:
WO 1990/013392 (15.11.1990 Gazette 1990/26)
(84) Designated Contracting States:
AT DE FR GB NL SE

(30) Priority: 05.05.1989 HU 19890012187

(71) Applicant: TUNGSRAM Részvénytársaság
H-1340 Budapest IV (HU)

(72) Inventors:
  • HOLLO, Sándor
    H-2300 Eger (HU)
  • MARTON, Zsolt
    H-1011 Budapest (HU)
  • NYIRI, Balázs
    H-1031 Budapest (HU)
  • SZANTO, János
    H-1117 Budapest (HU)

(74) Representative: Patentanwälte Viering, Jentschura & Partner 
Postfach 22 14 43
D-80504 München
D-80504 München (DE)

   


(54) APPARATUS FOR MACHINING BY THE MEANS OF A PLASMA BEAM A WORKPIECE MADE OF A MATERIAL OF HIGH SOFTENING OR MELTING POINT, ESPECIALLY QUARTZ, GLASS OR A METAL