Patents by Inventor Fujikazu Sakai

Fujikazu Sakai 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).

  • Damping device for tower-like structure
    Patent number: 5070663
    Abstract: A damping device for a tower-like structure, includes a liquid column tube having an arbitrary shape and a pair of opposite upstanding end portions thereof where liquid levels are formed, and an orifice provided at an intermediate portion within the liquid column tube, the liquid column tube being mounted upon the tower-like structure. The damping property of the damping device can be quantitatively defined by employing the orifice. Furthermore, as the intermediate portion of the liquid column tube defined between the opposite upstanding end portions can be appropriately configured, the installation space for the damping device is optimized.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: December 10, 1991
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Fujikazu Sakai, Shingo Takaeda, Toshihiro Tamaki