Patents by Inventor SeongKook Cho

SeongKook Cho 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).

  • Single phase induction motor
    Patent number: 8253369
    Abstract: The present invention relates to a single phase induction motor, and more particularly, to a single phase induction motor, wherein a variable resistance element which can change a winding number of a main winding or an auxiliary winding capable of producing a magnetic field at the time of starting is connected in parallel to some portion of the main winding or the auxiliary winding. A single phase induction motor including a stator composed of a core, a main winding and an auxiliary winding, and a rotor rotated by a mutual electromagnetic force by the stator comprises a resistance variable element connected in parallel to some portion of the main winding.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: August 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: SeongKook Cho, Byung-Taek Kim, Kyeong-Ho Kim
  • SINGLE PHASE INDUCTION MOTOR
    Publication number: 20110025254
    Abstract: The present invention relates to a single phase induction motor, and more particularly, to a single phase induction motor, wherein a variable resistance element which can change a winding number of a main winding or an auxiliary winding capable of producing a magnetic field at the time of starting is connected in parallel to some portion of the main winding or the auxiliary winding. A single phase induction motor including a stator composed of a core, a main winding and an auxiliary winding, and a rotor rotated by a mutual electromagnetic force by the stator comprises a resistance variable element connected in parallel to some portion of the main winding.
    Type: Application
    Filed: June 9, 2009
    Publication date: February 3, 2011
    Inventors: SeongKook Cho, Byung-Taek Kim, Kyeong-Ho Kim