Patents by Inventor Shinji Saho

Shinji Saho 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).

  • Publication number: 20090120538
    Abstract: An object is to provide an aluminum die cast product, e.g., a pressure vessel that requires high airtightness, in which pressure leak or gas leak ratio can be reduced and the product yield can be increased and also to provide a method for manufacturing the product. An aluminum die cast product in which a cast hole is formed by a core pin in a thick portion that is made thicker than other portions, wherein a chill layer with a secondary dendrite arm spacing of at least 5.5 ?m or less is provided at the surface of the cast hole.
    Type: Application
    Filed: May 30, 2008
    Publication date: May 14, 2009
    Inventors: Masafumi HAMASAKI, Kazuhiko INOGUCHI, Masaya HATANAKA, Masaki KAWASAKI, Shinji SAHO
  • Publication number: 20080053637
    Abstract: A method and an apparatus for manufacturing an aluminum die-cast product are provided, wherein an occurrence of shrinkage cavity is eliminated or reduced to a very small amount, and a sound and high-quality aluminum die-cast product having no casting defect can be produced. The method for manufacturing an aluminum die-cast product by performing die casting while a part, in which a casting defect tends to occur due to solidification shrinkage of a melt, which has been pressure-filled in a mold, during a solidification process, is pressurized with a local pressurization pin includes the steps of allowing the local pressurization pin to follow the movement of a solidification interface based on a solidification interface movement speed, which is calculated in advance, of the melt and keeping pushing the local pressurization pin in until the solidification is completed.
    Type: Application
    Filed: February 22, 2007
    Publication date: March 6, 2008
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masafumi Hamasaki, Kazuhiko Inoguchi, Masaya Hatanaka, Shinji Saho