Patents by Inventor Masaru Tomeoka

Masaru Tomeoka 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).

  • Patent number: 5165470
    Abstract: A plugging apparatus for fixing a mechanical plug within a heat transfer tube of a heat exchanger includes a main body capable of being coupled to a tool guide robot movable under remote control inside a water chamber of the heat exchanger, a plug fixing mechanism mounted on the main body for conveying a mechanical plug from outside the heat exchanger and fixing the mechanical plug in the heat transfer tube, and a clamping mechanism for clamping the main body to a tube plate of the heat exchanger at a desired position on the tube plate of the heat exchanger. The invention makes it possible to fix a mechanical plug in a heat transfer tube of a steam generator or heat exchanger of a reactor in a remote-controlled and continuous manner.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: November 24, 1992
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Akira Maekawa, Akira Shinomiya, Masaru Tomeoka
  • Patent number: 4839495
    Abstract: An improved laser beam welding apparatus for an inner circumferential surface of a tube is disclosed herein, which apparatus comprises an elongated flexible tube containing an optical fiber extended along the length thereof so as to transmit a laser beam, position detecting means disposed in the vicinity of the top end of the flexible tube to determine relative positioning thereof with respect to a work tube in which the flexible tube is inserted, holding means provided with an expander and disposed adjacent to the position detecting means for holding the tip end of the flexible tube in the work tube, rotary drive means disposed closer to the tip end of the flexible tube than the holding means, a rotary cylinder connected to the rotary drive means to be rotated with respect to the flexible tube, guide means mounted on the rotary cylinder in a relatively rotatable manner with respect to the rotary cylinder and held in contact with the inner surface of the work tube for supporting the rotary cylinder in a conce
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: June 13, 1989
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Takuya Kitera, Shoichi Urushibata, Masatoshi Sato, Tadashi Nagashima, Shoichi Hamada, Isao Shirasu, Yasumi Nakura, Michito Sakamoto, Takashi Ishide, Naruo Sakamoto, Masahiko Meka, Masaru Tomeoka