Patents by Inventor Milton Brayton Graff

Milton Brayton Graff 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: 6513809
    Abstract: The subject invention involves chess pieces made primarily from hardware components and chess sets of such chess pieces. Each chess piece comprises a center shaft component comprising a vertical threaded rod having a bottom end, a top end, and a surface from the rod's bottom end to its top end that is partially or wholly cylindrical and threaded. The center shaft component optionally comprises a head at either its bottom or top end. Each chess piece also comprises holed components, each holed component having a hole through which or into which the center shaft component projects. The holed components are stacked along the length of the center shaft component. All the holed components are secured in place by one or more holed components which are nuts having threads complementary to those of the threaded rod, and optionally by the head of the center shaft component.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: February 4, 2003
    Inventor: Milton Brayton Graff