Patents by Inventor Teng-Lu Tsai

Teng-Lu Tsai 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).

  • Table tennis serving machine
    Patent number: 6604517
    Abstract: A table tennis service machine is simple in construction and is formed of mechanical devices, such as a ball feeding device, a driving member, a deceleration gear set, and a ball ejecting device. The deceleration gear set is driven by the driving member such that the ball ejecting device is driven by the deceleration gear set in an intermittent manner, thereby resulting in a periodic ejection of the ball by the service machine.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: August 12, 2003
    Inventors: Tsung-Chih Chao, Teng-Lu Tsai, Thomas Donald Hugar