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. 12, 2015
Filed:
Oct. 07, 2013
Applicant:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21K 5/04 (2006.01); H05H 7/22 (2006.01); B23K 26/32 (2014.01); H05H 9/04 (2006.01);
U.S. Cl.
CPC ...
H05H 7/22 (2013.01); B23K 26/3213 (2013.01); H05H 9/042 (2013.01); H05H 2007/222 (2013.01);
Abstract
A drift tube manufacturing method and a drift tube which can reduce cost while securing an adequate level of particle beam focusing performance. The method includes: a magnet housing stage of housing a predetermined number of permanent magnets in a housing, which has a through-hole at a center part and an annular magnet housing space on an outer circumferential side of the through-hole; a welding stage of setting a lid for covering the opening part on the opening part; and welding the lid and the housing by laser beam welding. At least a surface of the housing and a surface of the lid are formed of copper.