Patents by Inventor Yeoh Kian Hock

Yeoh Kian Hock 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).

  • Automatic balancing apparatus
    Patent number: 6479912
    Abstract: An automatic balancing apparatus which includes a support shaft which is rotated by a drive; a case body which is fixed to the support shaft and which rotates together with the support shaft; a ring magnet which is placed at the inside corner, in the radial direction, of an inner space of the case body; and a balancing member. The balancing member further includes a plurality of magnetic bodies which are movable in the inner space of the case body and which can be drawn up by the magnetic field of the ring magnet. When the rotational frequency of a rotor, which rotates together with the case body, exceeds the resonant frequency, the automatic balancing apparatus reduces vibrations of the rotor; and the outer circumference of the ring magnet has a flat portion.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: November 12, 2002
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Yoshimi Kikuchi, Daisuke Higuchi, Yeoh Kian Hock
  • Automatic balancing apparatus
    Publication number: 20010038601
    Abstract: An automatic balancing apparatus which includes a support shaft which is rotated by a drive; a case body which is fixed to the support shaft and which rotates together with the support shaft; a ring magnet which is placed at the inside corner, in the radial direction, of an inner space of the case body; and a balancing member. The balancing member further includes a plurality of magnetic bodies which are movable in the inner space of the case body and which can be drawn up by the magnetic field of the ring magnet. When the rotational frequency of a rotor, which rotates together with the case body, exceeds the resonant frequency, the automatic balancing apparatus reduces vibrations of the rotor; and the outer circumference of the ring magnet has a flat portion.
    Type: Application
    Filed: January 17, 2001
    Publication date: November 8, 2001
    Inventors: Yoshimi Kikuchi, Daisuke Higuchi, Yeoh Kian Hock