Patents by Inventor Toshio Ohkura

Toshio Ohkura 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).

  • Apparatus for producing rigid elongated member for use in vehicles
    Patent number: 5926930
    Abstract: An apparatus producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel central rotational axes. The circumferential faces of the first forming rolls include annular main body portion bending sections that form the main body portion in the strip and adjacent transition portion bending sections that form adjacent transition portions in the strip, thereby forming an intermediate stage elongated member. The transition portions have a cross-section that changes continuously from the annular cross-section of the main body portion to a different cross-section of the terminal portions.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 27, 1999
    Assignee: Hashimoto Forming Industry Co., Ltd.
    Inventors: Tatsuya Tamura, Toshio Ohkura, Yuko Kano
  • Rigid elongated member for use in vehicles and producing method and apparatus therefor
    Patent number: 5756167
    Abstract: A method of producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel central rotational axes. The circumferential faces of the first forming rolls include annular main body portion bending sections that form the main body portion in the strip and adjacent transition portion bending sections that form adjacent transition portions in the strip, thereby forming an intermediate stage elongated member. The transition portions have a cross-section that changes continuously from the annular cross-section of the main body portion to a different cross-section of the terminal portions.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: May 26, 1998
    Assignee: Hashimoto Forming Industry Co., Ltd.
    Inventors: Tatsuya Tamura, Toshio Ohkura, Yuko Kano