Patents by Inventor Shui-Shan Cheng

Shui-Shan Cheng 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).

  • Assembly structure of tenon and mortise
    Patent number: 4175884
    Abstract: A tenon and mortise are formed with a taper-dovetail shape. As the tenon is inserted into the mortise, because of the friction force between the contacting surfaces and the squeezing force of the taper, the tenon is fixed sturdily in the mortise and the tenon can be easily assembled or dismantled by a particular shaping of its outer surface.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: November 27, 1979
    Inventor: Shui-Shan Cheng