Patents by Inventor Changbum Yu

Changbum Yu 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).

  • Permanent magnet type DC motor assembly
    Publication number: 20070138890
    Abstract: A DC motor assembly includes a rotary shaft, a rotor core surrounding the rotary shaft while maintaining a specific gap from each other, a plurality of magnets arranged on an periphery surface of the rotor core, and a fixing member for fixedly engaging the magnets and the rotor core with the rotary shaft. The fixing member includes a pair of cap plates which are fixed around the rotary shaft at an upper end part and a lower end part of both of the rotor core and the magnets.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 21, 2007
    Applicant: DAEWOO ELECTRONICS Corporation
    Inventor: Changbum Yu