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:
Apr. 06, 2021
Filed:
Sep. 27, 2017
Applicant:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Inventors:
Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 26/047 (2011.01); B21D 37/16 (2006.01); B21D 26/033 (2011.01);
U.S. Cl.
CPC ...
B21D 26/047 (2013.01); B21D 26/033 (2013.01); B21D 37/16 (2013.01);
Abstract
A forming device that forms a metal pipe by heating and expanding a metal pipe material includes: a pair of an upper die and a lower die between which the metal pipe material is heated and expanded; upper electrodes and lower electrodes that sandwich both end parts of the metal pipe material therebetween from upper and lower sides to heat the metal pipe material; and a busbar that is connected only to either the upper electrodes or the lower electrodes to supply electric power from a power supply.