Patents by Inventor Seong-Do Han

Seong-Do Han 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).

  • Driving circuit for improving starting of hybrid induction motor and method thereof
    Patent number: 6930464
    Abstract: A driving circuit for improving starting of a hybrid induction motor and its method includes a capacitor for operation electrically connected between a main coil and a auxiliary-coil, and a starting and current cutting-off means electrically connected with the capacitor for operation, applying a high starting current to a motor in starting, and cutting off the starting current when the motor is operated at a synchronous speed after the starting, so that a satisfactory starting characteristic can be obtained by increasing output under a low voltage state in starting, and effective operation can be performed by decreasing output under a normal operation state after the starting is completed.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: August 16, 2005
    Assignee: LG Electronics Inc.
    Inventors: Seong-Do Han, Jun-Ho Ahn, Hyoun-Jeong Shin
  • Driving circuit for improving starting of hybrid induction motor and method thereof
    Publication number: 20050017670
    Abstract: A driving circuit for improving starting of a hybrid induction motor and its method includes a capacitor for operation electrically connected between a main coil and a auxiliary-coil, and a starting and current cutting-off means electrically connected with the capacitor for operation, applying a high starting current to a motor in starting, and cutting off the starting current when the motor is operated at a synchronous speed after the starting, so that a satisfactory starting characteristic can be obtained by increasing output under a low voltage state in starting, and effective operation can be performed by decreasing output under a normal operation state after the starting is completed.
    Type: Application
    Filed: January 16, 2004
    Publication date: January 27, 2005
    Inventors: Seong-Do Han, Jun-Ho Ahn, Hyoun-Jeong Shin