Title (en)

HIGH ENTHALPY PLASMA TORCH

Publication

EP 0515975 A3 19930512 (EN)

Application

EP 92108547 A 19920520

Priority

CA 2043504 A 19910529

Abstract (en)

[origin: EP0515975A2] A plasma torch comprises a torch housing, rear and front tubular electrodes coaxially mounted within such housing with a gap therebetween, both electrodes being fabricated from copper having tubular inserts of refractory material, a vortex generator for introducing a tangential flow of gas in opposite direction into the tubular electrodes through the gap between the two electrodes, and a cooling system for cooling the tubular electrodes. <IMAGE>

IPC 1-7

H05H 1/34; H05H 1/28

IPC 8 full level

B23K 10/00 (2006.01); H05B 7/18 (2006.01); H05H 1/28 (2006.01); H05H 1/34 (2006.01)

CPC (source: EP US)

H05H 1/28 (2013.01 - EP); H05H 1/34 (2013.01 - EP US); H05H 1/3431 (2021.05 - EP); H05H 1/3442 (2021.05 - EP); H05H 1/3468 (2021.05 - EP)

Citation (search report)

• [Y] US 4668853 A 19870526 - FEY MAURICE G [US], et al
• [Y] US 3139509 A 19640630 - BROWNING JAMES A
• [Y] BE 896448 A 19831013 - CENTRE RECH METALLURGIQUE
• [Y] GB 2213636 A 19890816 - TOSHIBA KK [JP]
• [Y] US 3567898 A 19710302 - FEIN SAMUEL
• [Y] US 4928027 A 19900522 - DEININGER WILLIAM D [US], et al
• [A] US 3104310 A 19630917 - ROBERT MOSS ASHLEY
• [A] FR 2539942 A1 19840727 - PLASMA ENERGY CORP [US]
• [A] US 3301995 A 19670131 - ESCHENBACH RICHARD C, et al

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0515975 A2 19921202; EP 0515975 A3 19930512; EP 0515975 B1 19961030; CA 2043504 C 19950117; DE 69214878 D1 19961205; DE 69214878 T2 19970403; JP 3042919 B2 20000522; JP H04355100 A 19921209

DOCDB simple family (application)

EP 92108547 A 19920520; CA 2043504 A 19910529; DE 69214878 T 19920520; JP 31075091 A 19911126