Patents by Inventor Tsuyoshi HIGASHINAKAGAWA

Tsuyoshi HIGASHINAKAGAWA 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).

  • Laser welding method and laser welding device
    Patent number: 10421153
    Abstract: In a laser welding method, first, laser light is irradiated on one side surface of one of the metal members to form a protruding portion projecting from the other side surface on the opposite side. Next, a part of the protruding portion that was formed is melted by scanning the laser light to generate a metal melt flow toward a top of the protruding portion so as to form a protrusion. The protrusion projects farther from the other side surface than a height of the protruding portion that was initially formed. Then, the one of the metal member having the protrusion is superposed on another of the metal members so that the protrusion is interposed therebetween. Next, the laser light is irradiated onto a portion where the metal members are superposed to weld the metal members to each other.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: September 24, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazuhiko Kagiya, Shintaro Nonaka, Tsuyoshi Higashinakagawa
  • LASER WELDING METHOD AND LASER WELDING DEVICE
    Publication number: 20180304404
    Abstract: In a laser welding method, first, laser light is irradiated on one side surface of one of the metal members to form a protruding portion projecting from the other side surface on the opposite side. Next, a part of the protruding portion that was formed is melted by scanning the laser light to generate a metal melt flow toward a top of the protruding portion so as to form a protrusion. The protrusion projects farther from the other side surface than a height of the protruding portion that was initially formed. Then, the one of the metal member having the protrusion is superposed on another of the metal members so that the protrusion is interposed therebetween. Next, the laser light is irradiated onto a portion where the metal members are superposed to weld the metal members to each other.
    Type: Application
    Filed: September 14, 2016
    Publication date: October 25, 2018
    Inventors: Kazuhiko KAGIYA, Shintaro NONAKA, Tsuyoshi HIGASHINAKAGAWA