Patents by Inventor Dong-Kill Yu

Dong-Kill 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).

  • Stack type optical disk changer
    Patent number: 7454766
    Abstract: The present invention discloses a stack type optical disk changer including a main frame, a cartridge slidably installed on the main frame, a plurality of disk trays slidably stacked in the cartridge, and a cartridge movement preventing means installed in the main frame, for selectively stopping movement of the cartridge. The stack type optical disk changer maintains quality of sound or image of an optical disk, and prevents damages of the optical disk, mis-operations and breakage, by preventing the optical disk from being separated from the tray.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: November 18, 2008
    Assignee: LG Electronics Inc.
    Inventors: Sang-Joe Kim, Dong-Kill Yu
  • Stack type optical disk changer
    Publication number: 20050144627
    Abstract: The present invention discloses a stack type optical disk changer including a main frame, a cartridge slidably installed on the main frame, a plurality of disk trays slidably stacked in the cartridge, and a cartridge movement preventing means installed in the main frame, for selectively stopping movement of the cartridge. The stack type optical disk changer maintains quality of sound or image of an optical disk, and prevents damages of the optical disk, mis-operations and breakage, by preventing the optical disk from being separated from the tray.
    Type: Application
    Filed: November 8, 2004
    Publication date: June 30, 2005
    Inventors: Sang-Joe Kim, Dong-Kill Yu