Patents by Inventor Hyun Rok Cha

Hyun Rok Cha 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).

  • Patent number: 6806609
    Abstract: A single phase induction motor and a compressor utilizing the single phase induction motor wherein the motor has a stator having a plurality of slots; a rotor being rotated by a magnetic field generated by an electric force between the stator and the rotor; and a main winding and a sub winding wound through the plurality of slots of the stator to form a revolving magnetic field of the rotor. The main winding and the sub winding form a centralized type of winding structure so that the main winding and the sub winding are wound in an alternate pattern via adjacent slots. Since the centralized winding structure of the main winding and the sub winding which are wound through the slots of the stator, the coil end is greatly reduced, and as a result, the material costs and copper loss can be greatly reduced. Further, the main winding and the sub winding, which are wound through the slots of the stator, do not protrude from opposite sides of the stator too much.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: October 19, 2004
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventor: Hyun-rok Cha
  • Publication number: 20040105208
    Abstract: Disclosed is a lead wire holding member. In the disclosed invention, the holding member for holding a plurality of lead wires together comprises one or more holding plate, each plate having a hole for receiving the plurality of lead wires all together and a slit formed from the hole to the outer edge of the holding plate. Accordingly, lead wires can be easily held together and a holding member that is less costly and easy to work with can be provided.
    Type: Application
    Filed: May 13, 2003
    Publication date: June 3, 2004
    Inventor: Hyun-Rok Cha
  • Publication number: 20040055140
    Abstract: A stator winding method of an induction motor for a compressor. According to the method, a main winding and a sub winding are wound in a concentrated winding type with a regularity so that the main winding and the sub winding each pass through neighboring slots of the stator, wherein at least two slots, the main winding and the sub winding are overlapped. In here, it is preferred that the main winding and the sub winding are overlapped at four (4) slots in a single phase-two (2) polarity-eight (8) slot type induction motor, overlapped at eight (8) slots in a single phase-two (2) polarity-twelve (12) slot type induction motor, overlapped at four (4) or twelve (12) slots in a single phase-two (2) polarity-sixteen (16) slot type induction motor, overlapped at four (4) slots in a single phase-four (4) polarity-twelve (12) slot type induction motor, and overlapped at six (6) slots in a three phase-two (2) polarity-twelve (12) slot type induction motor.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Inventor: Hyun-Rok Cha
  • Publication number: 20030146669
    Abstract: A single phase induction motor and a compressor utilizing the single phase induction motor wherein the motor has a stator having a plurality of slots; a rotor being rotated by a magnetic field generated by an electric force between the stator and the rotor; and a main winding and a sub winding wound through the plurality of slots of the stator to form a revolving magnetic field of the rotor. The main winding and the sub winding form a centralized type of winding structure so that the main winding and the sub winding are wound in an alternate pattern via adjacent slots. Since the centralized winding structure of the main winding and the sub winding which are wound through the slots of the stator, the coil end is greatly reduced, and as a result, the material costs and copper loss can be greatly reduced. Further, the main winding and the sub winding, which are wound through the slots of the stator, do not protrude from opposite sides of the stator too much.
    Type: Application
    Filed: May 28, 2002
    Publication date: August 7, 2003
    Inventor: Hyun-Rok Cha