Patents by Inventor Wei Lii

Wei Lii 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).

  • Enclosed single-axle driving mechanism for bicycles
    Patent number: 4943077
    Abstract: An enclosed single-axle driving mechanism for bicycles to replace the traditional chain drive system, comprised of one pair of spiral driving gears and one pair of spiral driven gears for power transmission, to let the pedaling force be transmitted through a driving spindle to drive the axle of the free-wheel to rotate, so as to minimize space requirement and maximize the security.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: July 24, 1990
    Assignee: Yu-Fu Traffic Supplier Ltd., Co.
    Inventors: Chuan-Sheng Lin, Wei Lii