Patents by Inventor Ting-shu Wu

Ting-shu Wu 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).

  • Seismic isolation systems with distinct multiple frequencies
    Patent number: 4938633
    Abstract: A method and apparatus for isolating a building or other structure from smic vibratory motion which provides increased assurance that large horizontal motion of the structure will not occur than is provided by other isolation systems. Increased assurance that large horizontal motion will not occur is achieved by providing for change of the natural frequency of the support and structure system in response to displacement of the structure beyond a predetermined value. The natural frequency of the support and structure system may be achieved by providing for engaging and disengaging of the structure and some supporting members in response to motion of the supported structure.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: July 3, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Ting-shu Wu, Ralph W. Seidensticker