Patents by Inventor Suteto Hasegawa

Suteto Hasegawa 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).

  • Control rods
    Patent number: 4400346
    Abstract: A control rod to be arranged in a nuclear reactor core comprises a body of a control rod, control rod guide rollers, pins connected to the guide rollers, and fixing members directly welded to the body of the control rod. The pins slidably support the respective guide rollers and the fixing members are engaged with the pins with a small clearance therebetween so as not to transfer welding heat from the fixing member to the pin.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: August 23, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tatsuyoshi Aisaka, Mituo Kawai, Suteto Hasegawa, Takeo Nawai