Patents by Inventor Ben L. Caldwell

Ben L. Caldwell 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: 4136878
    Abstract: A toy amusement device including a rotatable disc and a magnetizable gameboard for receiving a plurality of magnetic pegs which are moved sequentially on a gridwork printed on the gameboard in response to a corresponding indication provided by the rest position of the disc. The disc is rotated by an electric motor operated by a push button switch. Interposed between the motor and disc is a ball-bearing wheel having an outer race drivingly connected to the disc for continuing the rotation of the disc after the switch is opened to increase the chance factor involved in determining the rest position of the disc.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: January 30, 1979
    Inventor: Ben L. Caldwell