Patents by Inventor Masashi Banse

Masashi Banse 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).

  • Butterfly valve device
    Patent number: 7866298
    Abstract: An object of the present invention is to provide a butterfly valve device made of resin, the butterfly valve device being little susceptible the secular change in gas flow (in particular, the minimum flow) or random changes. According to the present invention, when a butterfly valve is located at a full-closed position facing a peripheral lower surface of a semicircular portion with respect to a rotating shaft of the butterfly valve made of a resin material, a partial annular projection is adapted to radially inwardly extend towards an inner wall surface of a fluid path, the partial annular projection including a plane that contacts the peripheral lower surface of the valve to form a fluid seal.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: January 11, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takahiro Shimura, Masashi Banse, Hidefumi Iwaki
  • Butterfly Valve Device
    Publication number: 20080168965
    Abstract: An object of the present invention is to provide a butterfly valve device made of resin, the butterfly valve device being little susceptible the secular change in gas flow (in particular, the minimum flow) or random changes. According to the present invention, when a butterfly valve is located at a full-closed position facing a peripheral lower surface of a semicircular portion with respect to a rotating shaft of the butterfly valve made of a resin material, a partial annular projection is adapted to radially inwardly extend towards an inner wall surface of a fluid path, the partial annular projection including a plane that contacts the peripheral lower surface of the valve to form a fluid seal.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 17, 2008
    Applicant: HITACHI, LTD.
    Inventors: Takahiro SHIMURA, Masashi Banse, Hidefumi Iwaki