(19)
(11) EP 0 465 140 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.07.1992 Bulletin 1992/28

(43) Date of publication A2:
08.01.1992 Bulletin 1992/02

(21) Application number: 91305854.1

(22) Date of filing: 28.06.1991
(51) International Patent Classification (IPC)5: H05H 1/34
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 02.07.1990 US 547266

(71) Applicant: WESTINGHOUSE ELECTRIC CORPORATION
Pittsburgh Pennsylvania 15222 (US)

(72) Inventors:
  • Wolf, Charles Bernard
    Irwin, PA 15642 (US)
  • Taylor, Raymond Frances, Jr.
    Irwin, PA 15642 (US)

(74) Representative: van Berlyn, Ronald Gilbert 
23, Centre Heights
London NW3 6JG
London NW3 6JG (GB)


(56) References cited: : 
   
       


    (54) Non-clogging high efficiency plasma torch


    (57) An arc-heated plasma lance which is not exposed to clogging by superheat hydrocarbon gases is characterized by a shorter downward electrode and a generally shorter length of the upward and downward electrodes combination, with a flaring out electrode end at the outlet port for receiving the arc roots of the downward electrode, thereby to provide increased efficiency and generate radiant energy, as well as insuring non-clogging operation.






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