Patents by Inventor Fumio Obara

Fumio Obara 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).

  • Steam condenser
    Patent number: 7481264
    Abstract: A steam condenser which condenses steam exhausted from a steam turbine. Heat transfer tubes are arrayed below the steam turbine inside the container. Cooling medium flows inside the heat transfer tubes. The heat transfer tubes extend horizontally, and include at least two upper heat transfer tube groups and at least two lower heat transfer tube groups arranged with a gap between each other. Each heat transfer tube group is constituted by arraying heat transfer tubes like a grid. At a lower part between the lower heat transfer tube groups, a baffle plate which obstructs flow of steam extends horizontally. Between the upper and lower heat transfer tube groups, inter-tube-group inundation prevention plates extend horizontally. In each heat transfer tube group, an enclosure part extends to guide gas from the enclosure part to outside of the container through a gas extraction duct.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: January 27, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshihiro Yoshii, Shunichi Goshima, Yukio Takigawa, Tomoko Nakajima, legal representative, Yuuichi Nakajima, legal representative, Miyuki Nakajima, legal representative, Fumio Obara, Akira Nemoto, Shunji Kawano, Yuji Inoue, Shoji Nakajima
  • Steam condenser
    Publication number: 20060032618
    Abstract: A steam condenser which condenses steam exhausted from a steam turbine. Heat transfer tubes are arrayed below the steam turbine inside the container. Cooling medium flows inside the heat transfer tubes. The heat transfer tubes extend horizontally, and include at least two upper heat transfer tube groups and at least two lower heat transfer tube groups arranged with a gap between each other. Each heat transfer tube group is constituted by arraying heat transfer tubes like a grid. At a lower part between the lower heat transfer tube groups, a baffle plate which obstructs flow of steam extends horizontally. Between the upper and lower heat transfer tube groups, inter-tube-group inundation prevention plates extend horizontally. In each heat transfer tube group, an enclosure part extends to guide gas from the enclosure part to outside of the container through a gas extraction duct.
    Type: Application
    Filed: May 27, 2005
    Publication date: February 16, 2006
    Inventors: Toshihiro Yoshii, Shunichi Goshima, Yukio Takigawa, Shoji Nakajima, Tomoko Nakajima, Yuuichi Nakajima, Miyuki Nakajima, Fumio Obara, Shunji Kawano, Akira Nemoto, Yuji Inoue