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:
Aug. 28, 2012
Filed:
Oct. 03, 2007
Shigeru Nishigori, Yasu, JP;
Toru Akita, Kusatsu, JP;
Yoshinori Goho, Otsu, JP;
Katsuyoshi Kondoh, Minoh, JP;
Shigeru Nishigori, Yasu, JP;
Toru Akita, Kusatsu, JP;
Yoshinori Goho, Otsu, JP;
Katsuyoshi Kondoh, Minoh, JP;
Gohsyu Co., Ltd., Shiga, JP;
Abstract
A method for producing a high strength workpiece material includes the steps of: placing an alloy materialinto a central space of a cylindrical mold; vertically compressing both end faces of the material in the central space with a press memberand a first support member, thereby causing one lengthwise end of the material to flow radially outward along an end face of the cylindrical moldto form an expanded part; bringing the press memberinto contact with a lengthwise end face of the expanded part so as to press the expanded part against the end face of the cylindrical mold; and increasing the distance between the press memberand the end face of the cylindrical moldwhile decreasing the distance between the press memberand the first support member, thereby continuously causing the radially outward flow from one end to another end of the material to gradually increase the thickness of the expanded part.