The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 1986
Filed:
Sep. 12, 1983
Applicant:
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 219 / ; 2191 / ; 2191 / ; 31511121 ; 31323131 ;
Abstract
In an improved plasma torch, a metal tube delivers a plasma-generating gas to an end discharge outlet. The delivery tube is excited by microwave energy by means of a waveguide of rectangular cross-section. The tube traverses the waveguide through openings of larger diameter than the delivery tube. Metal sleeves are advantageously provided around the tube on each side of the waveguide. Two gases can be delivered to the plasma within concentric tubes. The plasma-formation zone can be moved further away from the waveguide by providing lateral impedance-matching devices along the sleeve.