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:
May. 02, 1995
Filed:
Mar. 31, 1994
Shigeru Shimogama, Kawanishi, JP;
Matsushita Electric Industrial, Co., Ltd., Osaka, JP;
Abstract
A method of operating an arc welding apparatus which controls and moves a welding wire of a welding torch and detects a weld between a work and the welding wire after completion of an arc welding, includes: a first step of cutting off a welding voltage to the welding wire to thereby extinguish a welding arc; a second step of detecting a weld state between the welding wire and the work; a third step of lifting the welding wire away from the work when the welded state is detected at the second step; a fourth step of detecting the welded state between the welding wire and the work after completion of the third step; a fifth step of impressing the welding voltage to the welding wire when a welded state has been detected at the fourth step; a sixth step of detecting the welded state between the welding wire and the work after completion of the fifth step; a seventh step of executing, when the welded state has been detected at the sixth step, at least one of the stopping of the operation of the arc welding apparatus, displaying of the welded state, and informing an operator of the welded state; and an eighth step of moving the apparatus to another location when the welded state has not been detected at the second, fourth, and sixth steps.