Patents by Inventor Hideshi Iwasa

Hideshi Iwasa 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).

  • Device and method for fixing a reactor metering pipe
    Patent number: 8608121
    Abstract: A reactor metering pipe fixing device fixes a reactor metering pipe disposed in a reactor to a cylindrical outer surface of a jet pump diffuser and reduces stress that may be induced in a weld zone in the reactor metering pipe. An outer holding member 41 is held on the cylindrical outer surface 18a of a jet pump diffuser 18 by a C-shaped holding member 30. The reactor metering pipe 19 is clamped from radial directions by the outer holding member 41 and inner holding members 42 and 43. Wedges 44 and 45 are wedged into a gap between the cylindrical outer surface 18a and the inner holding member 42 and a gap between the cylindrical outer surface 18a and the inner holding member 43 to fix the reactor metering pipe 19 firmly to the cylindrical outer surface 18a.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: December 17, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Maehara, Hideshi Iwasa, Yuusuke Watanabe, Kunihiko Kinugasa, Hajime Mori, Kiyofumi Saiki, Ken Okuda, Tsuyoshi Hagiwara, Noboru Saito, Masanobu Watanabe, Shigeru Kasai
  • DEVICE AND METHOD FOR FIXING A REACTOR METERING PIPE
    Publication number: 20090032650
    Abstract: A reactor metering pipe fixing device fixes a reactor metering pipe disposed in a reactor to a cylindrical outer surface of a jet pump diffuser and reduces stress that may be induced in a weld zone in the reactor metering pipe. An outer holding member 41 is held on the cylindrical outer surface 18a of a jet pump diffuser 18 by a C-shaped holding member 30. The reactor metering pipe 19 is clamped from radial directions by the outer holding member 41 and inner holding members 42 and 43. Wedges 44 and 45 are wedged into a gap between the cylindrical outer surface 18a and the inner holding member 42 and a gap between the cylindrical outer surface 18a and the inner holding member 43 to fix the reactor metering pipe 19 firmly to the cylindrical outer surface 18a.
    Type: Application
    Filed: July 3, 2008
    Publication date: February 5, 2009
    Inventors: Takeshi MAEHARA, Hideshi Iwasa, Yuusuke Watanabe, Kunihiko Kinugasa, Hajime Mori, Kiyofumi Saiki, Ken Okuda, Tsuyoshi Hagiwara, Noboru Saito, Masanobu Watanabe, Shigeru Kasai