Patents by Inventor Takeshi Sawamoto

Takeshi Sawamoto 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).

  • Magnetically controlled bearing unit
    Patent number: 5142177
    Abstract: A bearing unit comprising a rotating body, a rotating shaft and a bearing, wherein there is provided a construction with a plurality of electromagnetic poles is arranged, together with a plurality of sensors for detecting the run-out of the rotating shaft, and also comprises a control circuit for controlling the intensity of a magnetic force according to a detection output of these sensors, thereby controlling the bearing unit so that vibration and run-out of the rotating body due to inbalance thereof are effectively suppressed while making the unit to revolve around the principle axis of shape.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: August 25, 1992
    Assignees: Toshiro Higuchi, Nippon Seiko Kabushiki Kaisha
    Inventors: Toshiro Higuchi, Takeshi Sawamoto, Hiromasa Fukuyama, Takeshi Takizawa