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:
Sep. 13, 2022
Filed:
Sep. 09, 2020
Applicant:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Inventors:
Akihiro Ide, Ehime, JP;
Masayuki Ishizuka, Ehime, JP;
Norieda Ueno, Tokyo, JP;
Kimihiro Nogiwa, Ehime, JP;
Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 26/00 (2006.01); B21D 26/033 (2011.01); F16L 9/00 (2006.01); F16L 9/02 (2006.01); B21D 26/047 (2011.01);
U.S. Cl.
CPC ...
B21D 26/033 (2013.01); B21D 26/047 (2013.01); F16L 9/006 (2013.01); F16L 9/02 (2013.01);
Abstract
A forming device which expands a metal pipe material to form a metal pipe having a pipe portion and a flange portion includes a hardness lowering portion which lowers a hardness of the flange portion to be lower than a hardness of the pipe portion.