Patents by Inventor Murray B. Calvert

Murray B. Calvert 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).

  • Pentagonal game equipment
    Patent number: 4357018
    Abstract: A game comprises a playing surface and a set of playing pieces. The playing surface is marked with interlocking closed chains of regular pentagons in side to side abuttment. In the preferred embodiment, pieces having pentagonal portions are assembled on the playing surface to form closed chains. In other embodiments, traditional games such as dominoes and checkers are adapted to the new playing surface. Many such playing surface designs are possible.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: November 2, 1982
    Inventor: Murray B. Calvert
  • Pentagonal puzzle
    Patent number: 4343471
    Abstract: A puzzle comprising a set of triangular, quadrilateral, and pentagonal tiles. Apical angles are in multiples of 36 degrees, and sides are proportional to integral powers of the golden section. Regular pentagons and other patterns are assembled from the tiles.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 10, 1982
    Inventor: Murray B. Calvert