Patents by Inventor Ming-Chuang Shih

Ming-Chuang Shih 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).

  • Ultra-thin low noise axial flow fan for office automation machines
    Patent number: 5320493
    Abstract: An ultra-thin low noise axial flow fan is provided for office automation machine. The center line along the blade from its root portion to its tip portion is circular arc form and it is perpendicular to the central hub. The leading edge skew angle at the tip portion of the blade is 47 degrees. The blade angle of each blade ranges from 57 to 63 degrees, which is first directly proportional to the radius of the blade and then inversely proportional to the radius of the blade from the root portion to the tip portion of the blade. The pitch-chord ratio of each blade is inversely proportional to the radius of the blade from the root port to the tip portion of the blade. The blade of the fan thereby generates high air flow and high pressure, and has advantages of low noise and ultra-thin outer casing.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: June 14, 1994
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Chuang Shih, Huan-Jan Chien