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. 24, 2024
Filed:
Dec. 23, 2019
Murata Welding Laboratories, Incorporated, Osaka, JP;
MURATA WELDING LABORATORIES, INCORPORATED, Osaka, JP;
Abstract
The present invention enables even a beginner to acquire the technique easily and perform suitable spot welding, and achieves improved workability, improved welding quality, improved productivity, and the like. The present invention includes a torch bodyfor passing a shielding gas, a tungsten electrode rodinserted into the torch bodyand connected to a cathode, a constricted nozzlefor supporting a distal end portion of the tungsten electrode rodconcentrically, defining a gas passagebetween the tungsten electrode rodand the constricted nozzlefor flowing a shielding gas G, and discharging the shielding gas G from the constricted nozzleat a higher speed than the shielding gas G discharged from the distal end of the torch body, and a cylindrical electrode nozzlehaving conductivity arranged concentrically with the tungsten electrode rodon the outer circumference of the constricted nozzle, connected to the anode via a ground cable, and configured to have a tapered shape at a distal end portion, wherein the tapered distal end portion is located further outside than the distal end portion of the tungsten electrode rod, gas vent portsandof the shielding gas G are provided on the electrode nozzle