Patents by Inventor Tzong T. Liang

Tzong T. Liang 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).

  • Freewheel assembly for bicycle
    Patent number: 5480357
    Abstract: A freewheel of a bicycle includes a number of sprockets engaged on a sprocket ring. An outer thread is formed in the outer portion of the sprocket ring for engaging with a lock nut. The lock nut includes a number of serrated teeth formed on one side surface. An outermost sprocket includes an outer surface having an annular shoulder so as to define an annular surface. The annular surface includes a number of serrated teeth for engaging with the serrated teeth of the lock nut so as to solidly and stably securing the sprocket to the lock nut.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 2, 1996
    Inventor: Tzong T. Liang