Patents by Inventor Takamasa Hirai

Takamasa Hirai 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).

  • Bearing device and rotary machine
    Patent number: 8292507
    Abstract: The bearing device has a bearing housing which is supported by a bearing base mounted on a body of a rotary machine equipped with a rotating shaft and through which the rotating shaft penetrates at the center and a plurality of pads which are arranged inside the bearing housing so as to circumferentially surround the rotating shaft and rotatably support the rotating shaft. A contact surface between an outer circumference of the bearing housing and an inner circumference of the bearing base extends along the axial direction of the rotating shaft and forms a convex curved surface protruding outward, and the bearing housing is slidably supported by the bearing base via the contact surface of the convex curved surface.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: October 23, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takamasa Hirai, Sadamu Takahashi, Kyoichi Ikeno, Naoyuki Nagai
  • BEARING DEVICE AND ROTARY MACHINE
    Publication number: 20110019950
    Abstract: The bearing device has a bearing housing which is supported by a bearing base mounted on a body of a rotary machine equipped with a rotating shaft and through which the rotating shaft penetrates at the center and a plurality of pads which are arranged inside the bearing housing so as to circumferentially surround the rotating shaft and rotatably support the rotating shaft. A contact surface between an outer circumference of the bearing housing and an inner circumference of the bearing base extends along the axial direction of the rotating shaft and forms a convex curved surface protruding outward, and the bearing housing is slidably supported by the bearing base via the contact surface of the convex curved surface.
    Type: Application
    Filed: February 4, 2009
    Publication date: January 27, 2011
    Inventors: Takamasa Hirai, Sadamu Takahashi, Kyoichi Ikeno, Naoyuki Nagai