Patents by Inventor Shigeya Kawamata

Shigeya Kawamata 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).

  • Liquid type mass damper with elongated discharge tube
    Patent number: 4872649
    Abstract: A new mass damper that avoids the formation of a higher-order resonance by utilizing the inertial resistance of a flowing liquid is disclosed. This damper solves the problem of an additional new degree of freedom due to the additional mass system associated with the conventional mass damper and makes it possible to control random vibration with a broad spectrum such as earthquakes. Also, several examples in which this damper is used for multilevel structures are disclosed.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: October 10, 1989
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventor: Shigeya Kawamata