Patents by Inventor Robert C. Kohrn

Robert C. Kohrn 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 of making reduced noise positive drive power transmission system
    Patent number: 4512834
    Abstract: In a positive drive power transmission system composed of a toothed belt and two or more pulleys, operating noise resulting from the impact of the belt and the pulleys is dramatically reduced by having surface discontinuities on either the belt or on the pulleys on those surfaces where the belt and the pulleys engage in impact contact when in operation. The surface discontinuities may be formed by recessed or raised portions of the belt or pulleys, may be straight or curved, and may be substantially parallel to the tensile member or at an angle thereto. Several methods of manufacturing belts with such surface discontinuities are disclosed.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: April 23, 1985
    Assignee: Uniroyal Inc.
    Inventor: Robert C. Kohrn
  • Reduced noise positive drive power transmission system
    Patent number: 4416649
    Abstract: In a positive drive power transmission system composed of a toothed belt and two or more pulleys, operating noise resulting from the impact of the belt and the pulleys is dramatically reduced by having surface discontinuities on either the belt or on the pulleys on those surfaces where the belt and the pulleys engage in impact contact when in operation. The surface discontinuities may be formed by recessed or raised portions of the belt or pulleys, may be straight or curved, and may be substantially parallel to the tensile member or at an angle thereto. Several methods of manufacturing belts with such surface discontinuities are disclosed.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: November 22, 1983
    Assignee: Uniroyal, Inc.
    Inventor: Robert C. Kohrn