Patents by Inventor Grant Crews

Grant Crews 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).

  • Method for reducing stress cracks at re-entrant corners of a concrete slab
    Patent number: 5743065
    Abstract: A stress reducing device for reducing or eliminating stress cracks in concrete slabs caused by shrinkage stresses at re-entrant corners of the concrete slab and method of use is provided. The stress reducing device is provided with a body member having a first and second leg, each leg having a first and second surface, the first surface of each leg defining an angle in the body member substantially corresponding to the angle of the re-entrant corner in a stem wall and the second surface of the first and second legs cooperating to define an arcuate concrete engaging surface for reducing concentration of stresses in the concrete slab adjacent the re-entrant corner.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: April 28, 1998
    Assignee: Dolese Brothers Co.
    Inventors: Grant Crews, Ben D. Fuller, Michael Caldarone
  • Device for reducing stress at re-entrant corners of a concrete slab
    Patent number: 5623798
    Abstract: A stress reducing device for reducing or eliminating stress cracks in concrete slabs caused by shrinkage stresses at re-entrant corners of the concrete slab and method of use is provided. The stress reducing device is provided with a body member having a first and second leg, each leg having a first and second surface, the first surface of each leg defining an angle in the body member substantially corresponding to the angle of the re-entrant corner in a stem wall and the second surface of the first and second legs cooperating to define an arcuate concrete engaging surface for reducing concentration of stresses in the concrete slab adjacent the re-entrant corner.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: April 29, 1997
    Assignee: Dolese Bros. Co.
    Inventors: Grant Crews, Ben D. Fuller, Michael Caldarone