Patents by Inventor Jin Yu Kim

Jin Yu Kim 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: 6530740
    Abstract: This invention relates to a hand truck with an electrically operated lifting platform. The hand truck includes a frame on both sides of which two guide rails are formed. The frame is provided with a screw shaft vertically supported on the frame to be vertically moved, one or more stabilizing bars forwardly extended from the frame, and two wheels rotatably attached to the rear portion of the frame. A lifting platform is guided by the guide rails and engaged with the screw shaft. A platform moving unit is comprised of a first drive motor for providing rotating force. The platform is situated in the lifting platform to allow the lifting platform to be moved selectively upward and downward along the screw shaft by the operation of the first drive motor. A control unit is electrically and controllably connected to the first drive motor and a power source.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: March 11, 2003
    Inventor: Jin Yu Kim
  • Publication number: 20010038786
    Abstract: Disclosed herein is a hand truck with an electrically operated lifting platform. The hand truck includes a frame on both sides of which two guide rails are formed. The frame is provided with a screw shaft vertically supported on the frame to be vertically moved, one or more stabilizing bars forwardly extended from the frame, and two wheels rotatably attached to the rear portion of the frame. A lifting platform is guided by the guide rails and engaged with the screw shaft. A platform moving unit is comprised of a first drive motor for providing rotating force. The platform is situated in the lifting platform to allow the lifting platform to be moved selectively upward and downward along the screw shaft by the operation of the first drive motor. A control unit is electrically and controllably connected to the first drive motor and a power source.
    Type: Application
    Filed: April 9, 2001
    Publication date: November 8, 2001
    Inventor: Jin Yu Kim