Patents by Inventor Shan-Nan Su

Shan-Nan Su 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).

  • Safety playing wheel means
    Patent number: 5700200
    Abstract: A playing wheel rotatably secured on a base fixed on a fixture of a playground includes a solid spoke portion diverging radially outwardly from a central hub portion of the playing wheel and a plurality of finger slots cut out in a periphery portion of the wheel adjacent to an outermost rim portion of the wheel to prevent injury to a child's fingers or hand as protected by the solid spoke portion of the wheel by eliminating the big openings easily entrapping a child's hand as formed in the spoke portion of a conventional playing wheel.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: December 23, 1997
    Inventor: Shan-Nan Su