Patents by Inventor I-Chao Yan

I-Chao Yan 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).

  • Grip gear-shifter for actuating derailleur of bicycle
    Patent number: 6644143
    Abstract: A grip gear-shifter for being used in actuating a derailleur of a bicycle is provided. The grip gear-shifter includes a return spring, a resilient steel plate having a polyhedron-formed controlling pawl, a guiding ring having a guiding notch for guiding a cable, a first module for lodging and positioning said controlling pawl when the bicycle are in the state of shifting gears, and a second module having a projection and a positioning unit for operating in coordination with the return spring and the resilient steel plate, thereby forming a relative motion of the resilient steel plate and the first module to correctly shift gears when the bicycle are in the state of shifting gears.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: November 11, 2003
    Assignee: National Science Council
    Inventors: Chan-Hua Feng, Jen-Ji Wang, I-Chao Yan, Te-Sheng Tseng
  • Grip gear-shifter for actuating derailleur of bicycle
    Publication number: 20020000136
    Abstract: A grip gear-shifter for being used in actuating a derailleur of a bicycle is provided. The grip gear-shifter includes a return spring, a resilient steel plate having a polyhedron-formed controlling pawl, a guiding ring having a guiding notch for guiding a cable, a first module for lodging and positioning said controlling pawl when the bicycle are in the state of shifting gears, and a second module having a projection and a positioning unit for operating in coordination with the return spring and the resilient steel plate, thereby forming a relative motion of the resilient steel plate and the first module to correctly shift gears when the bicycle are in the state of shifting gears.
    Type: Application
    Filed: May 3, 2001
    Publication date: January 3, 2002
    Inventors: Chan-Hua Feng, Jen-Ji Wang, I-Chao Yan, Te-Sheng Tseng