Patents by Inventor Kiyoharu Nakano

Kiyoharu Nakano 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).

  • Gate valve device
    Patent number: 7819384
    Abstract: A movable member is fitted in the middle in the vertical direction of a valve body core fitting that forms a gate valve body, and the movable member presses an elastic seal member from the inside of the seal member toward a tube inner wall surface located in a direction crossing the direction of insertion of the seal member. The movable member has arms and contact sections. The arms each have a second inclined section for pressing the elastic seal member against the tube inner wall surface upon receiving pressing action from a first inclined section that is formed on a pressing member and changes the direction of pressing. The contact sections are in contact with and press the inside of the elastic seal member. The contact sections of the movable member have recesses having inside the elastic seal member.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: October 26, 2010
    Assignee: Waterworks Technology Development Organization
    Inventors: Kiyoharu Nakano, Haruhiko Shimizu, Hisakazu Asai
  • GATE VALVE DEVICE
    Publication number: 20090224197
    Abstract: A movable member is fitted in the middle in the vertical direction of a valve body core fitting that forms a gate valve body, and the movable member presses an elastic seal member from the inside of the seal member toward a tube inner wall surface located in a direction crossing the direction of insertion of the seal member. The movable member has arms and contact sections. The arms each have a second inclined section for pressing the elastic seal member against the tube inner wall surface upon receiving pressing action from a first inclined section that is formed on a pressing member and changes the direction of pressing. The contact sections are in contact with and press the inside of the elastic seal member. The contact sections of the movable member have recesses having inside the elastic seal member.
    Type: Application
    Filed: August 7, 2006
    Publication date: September 10, 2009
    Applicant: WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO.
    Inventors: Kiyoharu Nakano, Haruhiko Shimizu, Hisakazu Asai