Patents by Inventor Danny C. T. Hui

Danny C. T. Hui 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).

  • Patent number: 4161843
    Abstract: The specification describes a toy including a flying body and a flexible cable interconnecting the flying body and means for operating the flying body. The flying body is provided with four identical propellers rotatable in the horizontal plane and arranged in a rectangular pattern. A drive motor is located centrally of the four propellers and drives gear means for rotating the four propellers at the same speed. A fifth smaller propeller is also provided, which is rotatable by the motor in the vertical plane. Each of the propellers is provided with a protective frame.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: July 24, 1979
    Inventor: Danny C. T. Hui