(19)
(11) EP 2 413 671 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.03.2014 Bulletin 2014/12

(43) Date of publication A2:
01.02.2012 Bulletin 2012/05

(21) Application number: 11156651.9

(22) Date of filing: 02.03.2011
(51) International Patent Classification (IPC): 
H05H 1/34(2006.01)
B23K 9/00(2006.01)
 H05H 1/36(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.07.2010 IT BO20100491

(71) Applicant: Cebora S.P.A.
40057 Cadriano Di Granarolo Emilia (IT)

(72) Inventors:
  • Dallavalle, Silvano
    40024, Castel San Pietro Terme (Bologna) (IT)
  • Vancini, Mauro
    44100, Ferrara (IT)
  • Colombo, Vittorio
    40023, Castelguelfo (Bologna) (IT)
  • Ghedini, Emanuele
    40053, Bazzano (Bologna) (IT)
  • Concetti, Alessia
    63100, Ascoli Piceno (IT)
  • Fazzioli, Riccardo
    40040, Vado Di Monzuno (Bologna) (IT)

(74) Representative: Conti, Marco 
Bugnion S.p.A. Via di Corticella, 87
40128 Bologna
40128 Bologna (IT)

   


(54) Plasma torch


(57) A high voltage plasma torch comprises an electrode, a nozzle, a system for circulation of a gas and a power cable; the power cable comprises a gas transit duct (2), a conducting braid (3) for electrically connecting the electrode to the negative pole of a current generator, a second wire (7) for connecting the nozzle to the positive pole of the current generator, a protective outer sheath (8); the conducting braid (3) is positioned outside the duct (2) and an insulating coating (5) for use with high voltages is placed on top of the conducting braid (3) to isolate it from the rest of the power cable (1).







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Search report