Patents by Inventor Takamichi HIRASAWA

Takamichi HIRASAWA 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).

  • Polishing brush and machining tool using the same
    Patent number: 9592583
    Abstract: A polishing brush includes: a brush body that includes a cylindrical base section and linear abrasive materials extending from a bottom surface of one side of the base section along a direction of a center of an axis of the base section, and removes burrs and performs polishing on a surface of a workpiece metal by relatively moving the abrasive materials and the workpiece metal while tips of the abrasive materials come into contact with a surface of the workpiece metal; a brush guide that is coaxial with the center of the axis and is disposed on the outside of the brush body in a radial direction so that the tips of the abrasive materials protrude from an end portion; and a displacement mechanism that changes protruding lengths of the abrasive materials from the end portion.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 14, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shinya Ishikawa, Michihiro Yamamoto, Satoru Shibata, Takamichi Hirasawa
  • POLISHING BRUSH AND MACHINING TOOL USING THE SAME
    Publication number: 20150165584
    Abstract: A polishing brush includes: a brush body that includes a cylindrical base section and linear abrasive materials extending from a bottom surface of one side of the base section along a direction of a center of an axis of the base section, and removes burrs and performs polishing on a surface of a workpiece metal by relatively moving the abrasive materials and the workpiece metal while tips of the abrasive materials come into contact with a surface of the workpiece metal; a brush guide that is coaxial with the center of the axis and is disposed on the outside of the brush body in a radial direction so that the tips of the abrasive materials protrude from an end portion; and a displacement mechanism that changes protruding lengths of the abrasive materials from the end portion.
    Type: Application
    Filed: December 4, 2014
    Publication date: June 18, 2015
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Shinya ISHIKAWA, Michihiro YAMAMOTO, Satoru SHIBATA, Takamichi HIRASAWA