Patents by Inventor Chin-Lai Yu

Chin-Lai Yu 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: 4625967
    Abstract: A movable surface global puzzle includes a magnetic core and a concentric shell spaced from and surrounding the core, the shell is divided into component sections as defined by planes passing through a center of the core, and is magnetically held to the core. A plurality of ball bearings interposed between the shell and the core provide for slidable movement of the shell sections about the core and relative to each other. A world map, geometric design or similar pattern is depicted on the surface of and extending over several sections. The object of the puzzle is to rearrange a random distribution of the shell sections by a series of shiftable movements so as to recreate the composite or mosaic pattern. In an alternate arrangement a handle is provided for removal of one or more shell sections from the core to provide an alternate method of play and to facilitate solving the puzzle.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: December 2, 1986
    Inventor: Chin-Lai Yu