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:
Jul. 25, 1978
Filed:
May. 24, 1977
Applicant:
Inventors:
Nobuyuki Yamauchi, Amagasaki, JP;
Takao Taka, Amagasaki, JP;
Assignee:
Sumitomo Metal Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21914521 ;
Abstract
Electrode for tungsten inert gas welding having a body of a circular cross-section with a frustoconical tip end having a cone angle less than 120.degree.. The electrode is formed with an axially extending cylindrical recess at the tip end to leave an annular area. The configuration of the electrode is effective to decrease the intensity of the arc force so that the welding process can be performed with a heavy current and high speed.