Patents by Inventor Yoshihiro Wakazono

Yoshihiro Wakazono 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).

  • Manufacturing method for a blade material
    Patent number: 9221095
    Abstract: Provided are a manufacturing method for a blade material and a manufacturing device for a blade material, by which a long blade material can be manufactured without using a large-sized press forging machine. A manufacturing method for a blade material, in which hot forging is sequentially performed by molds from the root side to a blade (vane) tip, wherein when a root-side portion is grasped and a material to be forged is restrained by a mold, twisting is performed on a region between the grasped portion and the restrained portion. A manufacturing method for a blade material, in which hot forging and twisting are repeated, is preferable, and a manufacturing method for a blade material, in which hot forging is performed while molds are sequentially changed, is more preferable.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: December 29, 2015
    Assignee: HITACHI METALS, LTD.
    Inventors: Koji Sato, Takashi Toga, Yoshihiro Wakazono, Hideki Matsumoto, Yusuke Shigihara
  • MANUFACTURING METHOD FOR BLADE MATERIAL AND MANUFACTURING DEVICE FOR BLADE MATERIAL
    Publication number: 20130298401
    Abstract: Provided are a manufacturing method for a blade material and a manufacturing device for a blade material, by which a long blade material can be manufactured without using a large-sized press forging machine. A manufacturing method for a blade material, in which hot forging is sequentially performed by molds from the root side to a blade (vane) tip, wherein when a root-side portion is grasped and a material to be forged is restrained by a mold, twisting is performed on a region between the grasped portion and the restrained portion. A manufacturing method for a blade material, in which hot forging and twisting are repeated, is preferable, and a manufacturing method for a blade material, in which hot forging is performed while molds are sequentially changed, is more preferable.
    Type: Application
    Filed: September 22, 2011
    Publication date: November 14, 2013
    Applicant: HITACHI METALS, LTD.
    Inventors: Koji Sato, Takashi Toga, Yoshihiro Wakazono, Hideki Matsumoto, Yusuke Shigihara