Patents by Inventor Toshio Netsu

Toshio Netsu 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).

  • Welding equipment for fabricating a combustion liner
    Patent number: 5302795
    Abstract: A combustion line, having a combustion liner body and rings welded inside the liner body, is fabricated by enlarging the diameter of each ring so that the spacing between the outer pheripheral surface of the ring and the inner peripheral surface of the liner body may fall within a predetermined range. Subsequently tacking the ring and the liner body by lap resistance welding in the state in which the diameter of the ring has been enlarged; thereafter, brazing the rings and the liner body which have been tacked.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: April 12, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Takeo Kurokawa, Yoji Akutsu, Noboru Umehara, Toshio Netsu