Patents by Inventor Jack Y. K. Lou

Jack Y. K. Lou 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).

  • Actively tuned liquid damper
    Patent number: 5560161
    Abstract: The invention concerns the use of actively tuned liquid dampers to quench vibrations in large civil structures. Such vibrations may be induced by earthquakes or high winds. The effective length of the liquid damper tank determines the natural frequency of the liquid, and thus the effectiveness of the damper at particular excitation frequencies. The liquid damper is tuned by rotating baffles to regulate the effective length of the damper tank.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: October 1, 1996
    Inventor: Jack Y. K. Lou