Patents by Inventor Yi S. Chen

Yi S. Chen 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).

  • Handle structure for an exercycle
    Patent number: 4621805
    Abstract: An improved handle structure for an exercycle including an angle-adjusting lever provided in a tube carried by a front rod of the exercycle. A pair of handle rods with handlebars are provided on both ends of the angle-adjusting lever and a locking bolt passes through the tube for engagement within a selected angle-adjusting hole of the angle-adjusting lever, thereby permitting the inclined angle of the handlebars to be adjusted to a desired position.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: November 11, 1986
    Inventor: Yi S. Chen
  • Exercise bicycle
    Patent number: D325410
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: April 14, 1992
    Inventor: Yi S. Chen