US Patent No. 10,893,600

HIGH PERFORMANCE INDUCTION PLASMA TORCH


Patent No. 10,893,600
Issue Date January 12, 2021
Title High Performance Induction Plasma Torch
Inventorship Maher I. Boulos, Sherbrooke (CA)
Nicolas Dignard, Sherbrooke (CA)
Alexandre Auger, Sherbrooke (CA)
Jerzy Jurewicz, Sherbrooke (CA)
Sebastien Thellend, Sherbrooke (CA)
Assignee TEKNA PLASMA SYSTEMS INC.

Claim of US Patent No. 10,893,600

1. An induction plasma torch comprising:a tubular torch body having an inner surface;
a plasma confinement tube having an outer surface and disposed inside the tubular torch body coaxial with said tubular torch body with an annular chamber formed between the inner surface of the tubular torch body and the outer surface of the plasma confinement tube;
a gas distributor head disposed at one end of the plasma confinement tube and structured to supply at least one gaseous substance into the plasma confinement tube;
an inductive coupling member outside the inner surface of the tubular torch body for applying energy to the gaseous substance to produce and sustain plasma in the plasma confinement tube;
a conductive capacitive shield applied to the inner surface of the tubular torch body, wherein the capacitive shield is segmented into axial strips, the axial strips are interconnected at one end, and the capacitive shield is in direct contact with the inner surface of the tubular torch body; and
axial grooves entirely formed within a material of the tubular torch body through the inner surface of the tubular torch body, the axial grooves being interposed between the axial strips.