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:
Jun. 16, 1987
Filed:
Mar. 25, 1986
Applicant:
Inventors:
Hirosada Irie, Yokohama, JP;
Susumu Tukamoto, Yokohama, JP;
Assignee:
National Research Institute for Metals, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 2191 / ; 2191 / ; 2503 / ;
Abstract
For carrying out electron beam welding, there is formed by means of a magnetic or electric field set up by an even number of at least two magnetic poles or electrodes, an electron beam, the pattern of which has elliptical or similar shaped cross sections. Electron beam welding is performed using such an electron beam. The direction of the major axis of the cross section of the electron beam at the surface of the material being welded and the direction of the major axis of the cross section of the electron beam at the bottom of the beam cavity, i.e., the root portion, are at right angles to each other.