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:
Jan. 09, 1979
Filed:
Oct. 11, 1977
Applicant:
Inventors:
Yo Takeuchi, Omiya, JP;
Masaki Morikawa, Urawa, JP;
Chuji Tanaka, Ageo, JP;
Tosiharu Hiji, Ageo, JP;
Assignee:
Mitsubishi Kinzoku Kabushiki Kaisha, Ohtemachi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ;
Abstract
A process for welding a pair of thick copper plates which comprises welding the pair of copper plates with respective edges placed adjacent to each other on a backing support made of carbon at the adjacent edges in an atmosphere of an inert gas by melting a filler metal with the use of a direct current arc generated between the copper plates connected to the negative pole and a positive electrode with an arc voltage V (volt) and a welding current I (ampere) satisfying the conditions: