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:
Oct. 15, 2024
Filed:
Apr. 30, 2021
Applicant:
Sanjo Machine Works, Ltd., Sanjo, JP;
Inventors:
Hiroyuki Kariya, Sanjo, JP;
Takahiro Sekine, Sanjo, JP;
Fumihiko Hattori, Sanjo, JP;
Kazushi Goi, Sanjo, JP;
Ryo Kurosawa, Sanjo, JP;
Assignee:
SANJO MACHINE WORKS, LTD., Sanjo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 20/02 (2006.01); B21D 11/20 (2006.01); B23K 37/00 (2006.01);
U.S. Cl.
CPC ...
B23K 20/028 (2013.01); B21D 11/203 (2013.01); B23K 37/003 (2013.01);
Abstract
In a method for manufacturing a shaft, and surfaces of a pair of metal sheets are polished, and the metal sheets are each bent into a cylindrical or arcuate shape. The polished end surfaces of the metal sheets are butted together with the end surfaces facing each other. The butted end portions are diffusion-joined, thereby forming a cylindrical member. The cylindrical member is cooled, and ends of the cylindrical member are joined to linking members to form the shaft.