Patents by Inventor Tong-Sheng Cheng

Tong-Sheng Cheng 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).

  • Magnetic damping device for an exercising machine
    Patent number: 6244990
    Abstract: A magnetic damping device installed in an exercising machine and controlled to impart a magnetic damping force to a load wheel, including two magnetic members symmetrically pivoted to the exercising machine and moved one after the other with an adjustment device relative to the load wheel, and two tensile springs respectively connected between the exercising machine and the magnetic members to provide the magnetic members with different moment of force.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: June 12, 2001
    Inventor: Tong-Sheng Cheng