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:
Nov. 04, 2025
Filed:
Dec. 07, 2020
Kobe Steel, Ltd., Kobe, JP;
Baini Jo, Fujisawa, JP;
Shogo Nakatsukasa, Fujisawa, JP;
Takeshi Yano, Fujisawa, JP;
Akira Ogawa, Fujisawa, JP;
Eiji Sato, Fujisawa, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
Gas-shielded arc welding in which the tip-to-work distance changes is configured so that fluctuations in welding current are curbed while arc length control is maintained. This is achieved with a corrected current calculating unit that includes a first controlling expression where a first gain Gis multiplied by an instantaneous voltage error value that is the difference between an instantaneous output voltage setting value and an output voltage detection value, and/or a second controlling expression where a second gain Gis multiplied by an average voltage error value that is the difference between an output voltage setting value and an average output voltage detection value of a pre-set period of time, determines an arc property gain Gand/or Gbased on a torch position detection value determined by a torch position determinator, and calculates a corrected current based on the first and/or the second controlling expression.