Patents by Inventor Jer-Fu Wang

Jer-Fu Wang 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).

  • Anti-seismic device with vibration-reducing units arranged in parallel
    Patent number: 7337586
    Abstract: An anti-seismic device is adapted to absorb the vibration energy of a structure, and comprises a plurality of vibration-reducing units, each of which includes a mass, a hydraulic cylinder, and a resilient element. The hydraulic cylinder has an outer end that is connected fixedly to the structure, and an inner end that is connected fixedly to the mass. The resilient element has an outer end that is connected to the structure, and an inner end that is connected to the mass. When the structure is subjected to vibration, the masses can move reciprocally relative to the structure at different vibration frequencies. The hydraulic cylinders are arranged substantially in parallel.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: March 4, 2008
    Inventors: Chi-Chang Lin, Jer-Fu Wang
  • Anti-seismic device with vibration-reducing units arranged in parallel
    Publication number: 20050274084
    Abstract: An anti-seismic device is adapted to absorb the vibration energy of a structure, and comprises a plurality of vibration-reducing units, each of which includes a mass, a hydraulic cylinder, and a resilient element. The hydraulic cylinder has an outer end that is connected fixedly to the structure, and an inner end that is connected fixedly to the mass. The resilient element has an outer end that is connected to the structure, and an inner end that is connected to the mass. When the structure is subjected to vibration, the masses can move reciprocally relative to the structure at different vibration frequencies. The hydraulic cylinders are arranged substantially in parallel.
    Type: Application
    Filed: June 14, 2004
    Publication date: December 15, 2005
    Inventors: Chi-Chang Lin, Jer-Fu Wang