Patents by Inventor Eric Kam-Ling Hung

Eric Kam-Ling Hung 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).

  • Simple, compact and effective self-extending and retracting bicycle crank arm
    Patent number: 7093516
    Abstract: This invention is a bicycle crank and pedal assembly with a self-extending and retracting crank arm. The assembly only has three one-piece components that move relative to each other, if the bearings used in friction reduction are ignored. It is simple in design, compact in size and very effective in delivering the benefits of a self-extending and retracting crank arm. In particular, the assembly has (a) the maximum arm length for over 90 degrees of arm directions in the power down stroke and (b) the minimum arm length for close to 90 degrees of arm directions in the return up stroke.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: August 22, 2006
    Inventor: Eric Kam-Ling Hung
  • A simple, compact and effective self-extending and retracting bicycle crank arm
    Publication number: 20040103747
    Abstract: This invention is a bicycle crank and pedal assembly with a self-extending and retracting crank arm. The assembly only has three one-piece components that move relative to each other, if the bearings used in friction reduction are ignored. It is simple, compact and very effective in delivering the benefits of a self-extending and retracting crank arm. In particular, the assembly has (a) the maximum arm length for over 90 degrees of arm positions in the power down stroke and (b) the minimum arm length for close to 90 degrees of arm positions in the return up stroke.
    Type: Application
    Filed: July 14, 2003
    Publication date: June 3, 2004
    Inventor: Eric Kam-Ling Hung