Patents by Inventor Robert D. Woodworth

Robert D. Woodworth 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).

  • Hydraulic angling mechanism for disc harrow gangs
    Patent number: 4180135
    Abstract: Hydraulic mechanism for varying the angular relationship between a pair of adjacent end-connected disc harrow gangs which uses the same power source that ordinarily is employed for raising and lowering the harrow frame structure as a power source to actuate the gang angling mechanism. A bell crank lever mechanism embodying a pivot shaft, trailing wheel axle arms, and a crank arm, has the latter arm connected to the power source so that when the crank arm is swung in opposite fore and aft directions, the frame structure is raised or lowered.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: December 25, 1979
    Assignee: International Harvester Company
    Inventors: Eugen J. Birkenbach, Robert D. Woodworth
  • Insulated carrier for beverage cans or the like
    Patent number: D255755
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: July 8, 1980
    Assignee: Leisure Foam Products, Inc.
    Inventors: David L. Galloway, Morris L. Dock, James K. Grundy, Robert D. Woodworth