Patents by Inventor Shigeru Nishigori

Shigeru Nishigori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High strength workpiece material and method and apparatus for producing the same
    Patent number: 8250897
    Abstract: A method for producing a high strength workpiece material includes the steps of: placing an alloy material 10 into a central space of a cylindrical mold 2; vertically compressing both end faces of the material in the central space with a press member 5 and a first support member 3, thereby causing one lengthwise end of the material to flow radially outward along an end face of the cylindrical mold 2 to form an expanded part; bringing the press member 5 into 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 2; and increasing the distance between the press member 5 and the end face of the cylindrical mold 2 while decreasing the distance between the press member 5 and the first support member 3, 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.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: August 28, 2012
    Assignee: Gohsyu Co., Ltd.
    Inventors: Shigeru Nishigori, Toru Akita, Yoshinori Goho, Katsuyoshi Kondoh
  • High strenght workpiece material and method and apparatus for producing the same
    Publication number: 20100024512
    Abstract: A method for producing a high strength workpiece material includes the steps of: placing an alloy material 10 into a central space of a cylindrical mold 2; vertically compressing both end faces of the material in the central space with a press member 5 and a first support member 3, thereby causing one lengthwise end of the material to flow radially outward along an end face of the cylindrical mold 2 to form an expanded part; bringing the press member 5 into 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 2; and increasing the distance between the press member 5 and the end face of the cylindrical mold 2 while decreasing the distance between the press member 5 and the first support member 3, 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.
    Type: Application
    Filed: October 3, 2007
    Publication date: February 4, 2010
    Inventors: Shigeru Nishigori, Toru Akita, Yoshinori Goho, Katsuyoshi Kondoh