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:
Jul. 15, 2014
Filed:
Feb. 24, 2012
Atsushi Tomizawa, Minou, JP;
Hiroaki Kubota, Nishinomiya, JP;
Shinjiro Kuwayama, Osaka, JP;
Saburo Inoue, Tama, JP;
Atsushi Tomizawa, Minou, JP;
Hiroaki Kubota, Nishinomiya, JP;
Shinjiro Kuwayama, Osaka, JP;
Saburo Inoue, Tama, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Sumitomo Pipe & Tube Co., Ltd., Ibaraki, JP;
Abstract
A bent member having a bent portion with an extremely small bend radius is manufactured by supporting a rectangular tube by a first support means disposed at a first position A while performing relative feeding of the rectangular tube in its lengthwise direction, locally heating the rectangular tube by a heating means disposed at a second position B, cooling the rectangular tube by a cooling means disposed at a third position C, and at the time of working, applying a shear force to the heated portion of the rectangular tube with a shear force applying meansdisposed in a downstream region D by moving the devicetwo-dimensionally or three-dimensionally simultaneously in the feed direction of the rectangular tube and in a direction generally parallel to a transverse cross section in the lengthwise direction of the rectangular tube which was heated by the heating means.