Patents by Inventor Do-Woon Cho

Do-Woon Cho 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).

  • Projection welding device
    Patent number: 9802268
    Abstract: A projection welding gun device includes an upper welding tip and a lower welding tip that are combined with a gun body through a shank, where the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels, and a rotation unit that is rotated by a driving portion is disposed between the gun body and the shank to rotate the shank.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 31, 2017
    Assignee: Hyundai Motor Company
    Inventors: Do-Woon Cho, Chae Won Lim, Yong Joon Cho
  • PROJECTION WELDING DEVICE
    Publication number: 20150298245
    Abstract: A projection welding gun device includes an upper welding tip and a lower welding tip that are combined with a gun body through a shank, where the upper welding tip presses an upper panel corresponding to a protrusion portion that is formed on a lower panel to weld the upper and lower panels, and a rotation unit that is rotated by a driving portion is disposed between the gun body and the shank to rotate the shank.
    Type: Application
    Filed: October 22, 2014
    Publication date: October 22, 2015
    Inventors: Do-Woon Cho, Chae Won Lim, Yong Joon Cho