Patents by Inventor Chi N. Wong

Chi N. Wong 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).

  • Plug in brush retainer for a fractional horsepower electric motor
    Patent number: 5153474
    Abstract: A separately-excited fractional-horsepower electric motor in which a field coil is connected to one of the brushes by means of a brush retainer which is formed with a plug portion such that, on fitting the brush retainer to the brush holder, the plug portion penetrates and engages a socket connected to the field coil.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: October 6, 1992
    Assignee: Johnson Electric S.A.
    Inventors: Chi N. Wong, Kam S. Mok
  • Brush protection in an electric motor
    Patent number: 5138212
    Abstract: Brush gear for an electric motor includes stops 19 which prevent the brush leaves 18 from moving too close to the commutator when brushes 18A wear down. The stops 19 are separately formed and supported in grooves 20 in an end cap 16 and secured in position by lipped ends of electrical terminals 21. The stops 19 are preferably formed of metal.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: August 11, 1992
    Assignee: Johnson Electric S.A.
    Inventors: Chi N. Wong, Kam S. Mok