Patents by Inventor We C. Fanchang

We C. Fanchang 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).

  • Control mechanism of revolving speed of an electric tool
    Patent number: 5550416
    Abstract: A control mechanism of revolving speed of an electric tool comprises a speed changing mechanism and a speed selecting device. The speed changing mechanism is composed of an action ring, a locating ring and two slide rods. The control of revolving speed of the electric tool is brought about easily and precisely by means of the speed changing mechanism in conjunction with the speed selecting device which is composed of a seat, a locating frame fastened to the main body of the electric tool, and a push button.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: August 27, 1996
    Inventors: We C. Fanchang, Hsueh W. Hsueh