Patents by Inventor Yeon Sang Yoo

Yeon Sang Yoo 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).

  • Detachable mobile seat for vehicle usable as wheelchair
    Patent number: 7641217
    Abstract: A detachable mobile seat includes a first part connected to a motor; a second part attached to the seat; and two links, each connected to the first part, the second part, and a wheel. The links transfer movement of the first part to the wheels. The first part includes a shaft connected to the motor, and two nuts disposed around the shaft that have screw threads in opposite directions and move along the shaft in response to operation of the motor. Each link includes a first link connected to the second part and to the nut, and a second link connected to the nut and to the wheel. The end of each second link that is nearest the wheel is rotatably connected to a connecting arm that has a rotating bar that rotates the wheel in response to operation of the links.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: January 5, 2010
    Assignee: Hyundai Motor Company
    Inventors: Yeon Sang Yoo, Ju Young Lee
  • Detachable mobile seat for vehicle usable as wheelchair
    Publication number: 20080136128
    Abstract: A detachable mobile seat includes a first part connected to a motor; a second part attached to the seat; and two links, each connected to the first part, the second part, and a wheel. The links transfer movement of the first part to the wheels. The first part includes a shaft connected to the motor, and two nuts disposed around the shaft that have screw threads in opposite directions and move along the shaft in response to operation of the motor. Each link includes a first link connected to the second part and to the nut, and a second link connected to the nut and to the wheel. The end of each second link that is nearest the wheel is rotatably connected to a connecting arm that has a rotating bar that rotates the wheel in response to operation of the links.
    Type: Application
    Filed: April 27, 2007
    Publication date: June 12, 2008
    Inventors: Yeon Sang Yoo, Ju Young Lee