TITLE: HIGH PERFORMANCE INDUCTION PLASMA TORCH WITH A WATER-COOLED CERAMIC
CONFINEMENT TUBE.
European Patent Application EP0533884 A1

ABSTRACT:
Abstract not available for EP0533884
Abstract of corresponding document: US5200595
A high performance induction plasma torch comprises a cylindrical torch
body made of cast ceramic or composite polymer, a coaxial cylindrical
plasma confinement tube located inside the torch body, a gas
distributor head secured to one end of the torch body to supply the
confinement tube with gaseous substances, a cylindrical and coaxial
induction coil completely embedded in the ceramic or polymer material
of the torch body, and a thin annular chamber separating the coaxial
torch body and confinement tube. This confinement tube can be made of
pure or composite ceramic materials based on sintered or reaction
bonded silicon nitride, boron nitride, aluminum nitride or alumina, or
any combinations of them with varying additives and fillers. The
annular chamber is about 1 mm thick and high velocity cooling water
flows therein to efficiently cool the plasma confinement tube.

INVENTORS:
Boulos, Maher I. (CA)
Jurewicz, Jerzy (CA)

APPLICATION NUMBER: EP19920908330
PUBLICATION DATE: 03/31/1993
FILING DATE: 04/10/1992

ASSIGNEE: Univ, Sherbrooke (CA)
INTERNATIONAL CLASSES: B23K10/00; H05H1/28; H05H1/30; H05H1/34; H05H1/42; B23K10/00; H05H1/26;
(IPC1-7): H05H1/28; H05H1/30
EUROPEAN CLASSES: H05H1/28; H05H1/30
OTHER REFERENCES: