Patents by Inventor Yeong C. Chung

Yeong C. Chung 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).

  • Cross-linked switching circuit for producing a two-phase current drive for a bipolar brushless motor and a brushless motor including said switching circuit
    Patent number: 4472664
    Abstract: A switching circuit for producing a current drive for a bipolar brushless motor in solid-state form comprising cross-linked switching transistors which are controlled by control transistors which in turn are controlled by a decoder. The decoder may have provided as input signals either signals derived from the rotation in the motor in which case it acts as an asynchronous motor or may be controlled by signals from a counter which receives input pulses in which case the motor will rotate to accordance with the input pulses.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: September 18, 1984
    Inventor: Yeong C. Chung