Patents by Inventor Eizo Hayashida

Eizo Hayashida 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).

  • Hat-shaped cross-section component manufacturing apparatus and manufacturing method
    Patent number: 10016804
    Abstract: A hat-shaped cross-section component manufacturing apparatus includes: a die that includes a forming face that presses both side portions of a metal stock sheet; a punch that includes a forming face that presses a central portion of the metal stock sheet; a pad that includes a forming face that presses and grips the central portion of the metal stock sheet against the punch; and a blank holder that includes a forming face that presses and grips the both side portions of the metal stock sheet against the die. The hat-shaped cross-section component manufacturing apparatus further includes a pressure limiting device configured including a floating block that moves together with the blank holder when forming of a curving component has been completed, that is interposed between the pad and the blank holder, and that limits pressing of the formed curving component between the pad and the blank holder during demolding.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: July 10, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuharu Tanaka, Toshimitsu Aso, Takashi Miyagi, Misao Ogawa, Shinobu Yamamoto, Eizo Hayashida
  • HAT-SHAPED CROSS-SECTION COMPONENT MANUFACTURING APPARATUS AND MANUFACTURING METHOD
    Publication number: 20160271682
    Abstract: A hat-shaped cross-section component manufacturing apparatus includes: a die that includes a forming face that presses both side portions of a metal stock sheet; a punch that includes a forming face that presses a central portion of the metal stock sheet; a pad that includes a forming face that presses and grips the central portion of the metal stock sheet against the punch; and a blank holder that includes a forming face that presses and grips the both side portions of the metal stock sheet against the die. The hat-shaped cross-section component manufacturing apparatus further includes a pressure limiting device configured including a floating block that moves together with the blank holder when forming of a curving component has been completed, that is interposed between the pad and the blank holder, and that limits pressing of the formed curving component between the pad and the blank holder during demolding.
    Type: Application
    Filed: October 16, 2014
    Publication date: September 22, 2016
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuharu Tanaka, Toshimitsu Aso, Takashi Miyagi, Misao Ogawa, Shinobu Yamamoto, Eizo Hayashida