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. 12, 1985
Filed:
Oct. 27, 1983
Masatsune Kondo, Aichi, JP;
Youichiro Tabata, Hyogo, JP;
Shigeo Ueguri, Hyogo, JP;
Takaji Mizuno, Aichi, JP;
Hirohisa Segawa, Aichi, JP;
Seigo Hiramoto, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, both of, JP;
Toyota Jidosha Kabushiki Kaisha, both of, JP;
Abstract
A short circuiting arc welding machine increases an arc current density by adding a pulsed current having upper and lower limits to a current flowing when an arc is produced, thereby increasing the depth of bead penetration into a workpiece, removing welding defects, and speeding up the welding operation. The welding machine is capable of alternately changing the direction of flow of a welding current at desired periods to produce arcs in straight, reverse and mixed polarities for achieving intermediate characteristics of arcs of straight and reverse polarities, with a resultant ability to adjust in a wide range a wire melting rate and the amount of heat applied to the workpiece.