Patents by Inventor Sho KUROITA

Sho KUROITA 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).

  • Natural-circulation boiling water reactor and chimney therefor
    Patent number: 9666312
    Abstract: A chimney arranged inside of a reactor pressure vessel of a natural-circulation boiling water reactor is provided. The chimney includes plural flow channels which guide a steam-water two-phase flow generated in a reactor core to the upper part of the reactor pressure vessel. Each of the flow channels is formed by plural flow channel separation walls whose lower-most part is supported by a chimney lattice plate. Chimney spacers that support a horizontal load are arranged between the flow channel separation walls of the adjacent flow channels. Chimney support rings that support the horizontal load are arranged at the outermost periphery of the plural flow channels that are supported by the chimney lattice plate.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: May 30, 2017
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Sho Kuroita, Sadakatsu Sawahata, Yasuhiro Mabuchi, Hiroaki Asakura, Fumihito Hirokawa
  • Natural-Circulation Boiling Water Reactor and Chimney Therefor
    Publication number: 20150332793
    Abstract: The present invention provides a chimney for a natural-circulation boiling water reactor having structural soundness capable of standing a horizontal load generated by a flow-induced vibration, an earthquake and the like.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 19, 2015
    Inventors: Sho KUROITA, Sadakatsu SAWAHATA, Yasuhiro MABUCHI, Hiroaki ASAKURA, Fumihito HIROKAWA