Patents by Inventor Shoutarou Mizobuchi

Shoutarou Mizobuchi 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).

  • Spindle device having turbine rotor
    Patent number: 6368052
    Abstract: A spindle device can prevent a drive fluid for a turbine rotor from being leaked to a gap between a fixed housing and a spindle which is rotatably supported on the housing as much as possible and hence, the spindle device can efficiently make use of the supplied drive fluid and can increase the rotational torque of the spindle. The spindle device rotatably drives the spindle using the turbine rotor. The rotation of the spindle to the housing is supported using a radial dynamic pressure bearing. Further, supply holes and receiving holes for the drive fluid for the turbine rotor are formed such that these holes penetrate the radial dynamic pressure bearing in the radial direction.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: April 9, 2002
    Assignee: THK Co. Ltd.
    Inventors: Masakazu Uesugi, Shoutarou Mizobuchi
  • Spindle device having turbine rotor
    Publication number: 20010014281
    Abstract: A spindle device can prevent a drive fluid for a turbine rotor from being leaked to a gap between a fixed housing and a spindle which is rotatably supported on the housing as much as possible and hence, the spindle device can efficiently make use of the supplied drive fluid and can increase the rotational torque of the spindle. The spindle device rotatably drives the spindle using the turbine rotor. The rotation of the spindle to the housing is supported using a radial dynamic pressure bearing. Further, supply holes and receiving holes for the drive fluid for the turbine rotor are formed such that these holes penetrate the radial dynamic pressure bearing in the radial direction.
    Type: Application
    Filed: February 7, 2001
    Publication date: August 16, 2001
    Applicant: THK CO., LTD.
    Inventors: Masakazu Uesugi, Shoutarou Mizobuchi