Patents by Inventor Michael S. Dube/

Michael S. Dube/ 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: 5496129
    Abstract: A paving stone (10) is provided which includes individual sectors (20, 30) of uniform size and shape. Each sector (20, 30) is joined together to form a unique pattern such as a cross-paver (10), a Z-paver (110) or an S-paver (210). Some sectors (20, 30) are tips sectors (20) which attach to only one other central sector (30) and some sectors (20, 30) are central sectors (30) which attach to two or more other top sectors (20). Each of the sectors (20, 30) extend between a common top surface (40) and a bottom surface (50). An outside surface (60) defines a periphery of the paving stone. A V-groove (80) is positioned on the top surface (40) at margins between adjacent sectors (20, 30). The V-groove (80) includes a crease (82) on a bottom thereof which encourages vertical crack propagation from the top surface (40) through to the bottom surface (50) in a plane when a appropriate force-applying tool is utilized. When this occurs the paver (10) is modified into a paver of a different shape.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: March 5, 1996
    Inventor: Michael S. Dube/