Patents by Inventor Yasuo Fujihara

Yasuo Fujihara 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).

  • Electrochemical machining method and electrochemical machining device
    Patent number: 8097131
    Abstract: A method and a device for electrochemically machining workpiece having blade end plates at the longitudinal both ends of a blade-shaped portion having aerofoil shape in cross section by extending and retracting divided electrodes. A part of the blade-shaped portion and one blade end plate continued therewith are electrochemically machined by advancing the main electrode in an acute angle direction relative to the longitudinal direction of the blade-shaped portion. At the same time or subsequently, the remaining part of the blade-shaped portion and the other blade end plate continued therewith are electrochemically machined by slidably advancing an auxiliary electrode along the slope of the main electrode forming an acute angle relative to the blade-shaped-portion-machining-surface. Thus, the number of the parts of an electrode unit can be reduced and the structure thereof can be simplified.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: January 17, 2012
    Assignees: APC Aerospecialty Inc., IHI Corporation
    Inventors: Toshiyuki Matsuo, Kazuhiko Yoshiwaki, Yasuo Fujihara, Masaaki Inoue, Mitsutoshi Watanabe
  • ELECTROCHEMICAL MACHINING METHOD AND ELECTROCHEMICAL MACHINING DEVICE
    Publication number: 20100051476
    Abstract: A method and a device for electrochemically machining workpiece having blade end plates at the longitudinal both ends of a blade-shaped portion having aerofoil shape in cross section by extending and retracting divided electrodes. A part of the blade-shaped portion and one blade end plate continued therewith are electrochemically machined by advancing the main electrode in an acute angle direction relative to the longitudinal direction of the blade-shaped portion. At the same time or subsequently, the remaining part of the blade-shaped portion and the other blade end plate continued therewith are electrochemically machined by slidably advancing an auxiliary electrode along the slope of the main electrode forming an acute angle relative to the blade-shaped-portion-machining-surface. Thus, the number of the parts of an electrode unit can be reduced and the structure thereof can be simplified.
    Type: Application
    Filed: June 23, 2006
    Publication date: March 4, 2010
    Inventors: Toshiyuki Matsuo, Kazuhiko Yoshiwaki, Yasuo Fujihara, Masaaki Inoue, Mitsutoshi Watanabe