Patents by Inventor Kohei CHIASHI

Kohei CHIASHI 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).

  • Friction stir spot welding structure
    Patent number: 9868176
    Abstract: A friction stir spot welding structure includes a pair configured of an upper side flange portion and a lower side flange portion that are friction stir spot welded together by being pressed by a rotating pin rotating from one thickness direction side at a mutually overlapping location. A pair of protruding portions that project out in a protruding shape from the upper side flange portion toward the lower side flange portion are formed to the upper side flange portion. A pair of engagement holes into which the pair of protruding portions are inserted are formed to the lower side flange portion.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: January 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Chiashi, Yutaka Yamada
  • Friction stir spot welding structure
    Patent number: 9630274
    Abstract: A friction stir spot welding structure includes a pair configured of an upper side flange portion and a lower side flange portion that are friction stir spot welded together by being pressed by a rotating pin rotating from one thickness direction side at a mutually overlapping location. A pair of protruding portions that project out in a protruding shape from the upper side flange portion toward the lower side flange portion are formed to the upper side flange portion. A pair of engagement holes into which the pair of protruding portions are inserted are formed to the lower side flange portion.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: April 25, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Chiashi, Yutaka Yamada
  • FRICTION STIR SPOT WELDING STRUCTURE
    Publication number: 20160184921
    Abstract: A friction stir spot welding structure includes a pair configured of an upper side flange portion and a lower side flange portion that are friction stir spot welded together by being pressed by a rotating pin rotating from one thickness direction side at a mutually overlapping location. A pair of protruding portions that project out in a protruding shape from the upper side flange portion toward the lower side flange portion are formed to the upper side flange portion. A pair of engagement holes into which the pair of protruding portions are inserted are formed to the lower side flange portion.
    Type: Application
    Filed: November 27, 2015
    Publication date: June 30, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei CHIASHI, Yutaka YAMADA