Patents by Inventor Shao-Keh Hwang

Shao-Keh Hwang 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 control-type flow control valve
    Patent number: 5342025
    Abstract: A magnetic control-type flow control valve includes a driven magnet ring disposed rotatably in a metal tube unit, a rotatable circular valve piece connected to a bottom end of the driven magnet ring and formed with first openings, a stationary circular valve piece secured in the metal tube unit and in tight contact with the rotatable valve piece, and a driving magnet ring sleeved on the metal tube unit and rotatable to rotate the driven magnet ring therewith so as to rotate correspondingly the rotatable valve piece in order to cover selectively second openings formed in the stationary valve piece.
    Type: Grant
    Filed: January 5, 1994
    Date of Patent: August 30, 1994
    Inventor: Shao-Keh Hwang