Patents by Inventor Larry J. McComber

Larry J. McComber 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).

  • Trowel having imposed blade stresses and method of manufacture
    Patent number: 6032320
    Abstract: A trowel and related method of manufacture in which residual stresses are intentionally imposed upon the bottom working surface and/or the top mounting surface of a trowel blade. Stresses can be imposed, for example, by glass bead peening, shot peening, rolling, and/or brushing the metal trowel blade. Stresses are built up to a working stress level that remains substantially constant with further use of the trowel against abrasive, spreadable surfaces. Imposed stresses on the top and bottom surfaces can also be used to vary the resulting curvature of the blade.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: March 7, 2000
    Assignee: Marshalltown Trowel Company
    Inventors: Larry J. McComber, Jack D. Murders
  • Trowel having imposed blade stresses and method of manufacture
    Patent number: 5791009
    Abstract: A trowel and related method of manufacture in which residual stresses are intentionally imposed upon the bottom working surface and/or the top mounting surface of a trowel blade. Stresses can be imposed, for example, by glass bead peening, shot peening, rolling, and/or brushing the metal trowel blade. Stresses are built up to a working stess level that remains substantially constant with further use of the trowel against abrasive, spreadable surfaces. Imposed stresses on the top and bottom surfaces can also be used to vary the resulting curvature of the blade.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: August 11, 1998
    Assignee: Marshalltown Trowel Company
    Inventors: Larry J. McComber, Jack D. Murders
  • Trowel having imposed blade stresses and method of manufacture
    Patent number: 5697265
    Abstract: A trowel and related method of manufacture in which residual stresses are intentionally imposed upon the bottom working surface and/or the top mounting surface of a trowel blade. Stresses can be imposed, for example, by glass bead peening, shot peening, rolling, and/or brushing the metal trowel blade. Stresses are built up to a working stess level that remains substantially constant with further use of the trowel against abrasive, spreadable surfaces. Imposed stresses on the top and bottom surfaces can also be used to vary the resulting curvature of the blade.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: December 16, 1997
    Inventors: Larry J. McComber, Jack D. Murders