Patents by Inventor Ta C. Lai

Ta C. Lai 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).

  • Direct transmission system for a bicycle
    Patent number: 5078025
    Abstract: A direct transmission for a bicycle has a box disposed on a rear axle on which a conical gear is disposed. A shaft is coupled to the conical gear so as to drive the hub. A spring biases the shaft toward an annular flange in order that the shaft can not move longitudinally relative to the box. A hole with a notch is formed in a rear and outer end of the box. The rear axle can be inserted through the notch into the hole. A sleeve nut is engageable with the rear axle so as to stably retain the rear axle in position.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: January 7, 1992
    Inventors: Lee Wei, Ta C. Lai