Patents by Inventor D. Keith Dewey

D. Keith Dewey 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).

  • Automatic speed control system for a harvesting assembly
    Patent number: 4967544
    Abstract: The present invention is directed to a speed controller system for the gathering unit of a harvesting assembly wherein the speed is controlled as a ratio of the ground speed of the harvesting machine. The system is provided with an electronic controller having a ground speed sensor and a speed sensor for the gathering units. The operator through a ratio selector selects the desired speed ratio and the controller controls the speed of the gathering unit accordingly. The controller can be ised with different harvesting assemblies such as a platform having a reel or belt pickup gathering unit; or a row crop header having a conventional row crop gathering unit or a corn picker row unit. The controller is also provided with a diagnostic routine for flagging problem areas with the system. The flagged problem areas are assigned a diagnostic code which is displayed in a defined order.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: November 6, 1990
    Assignee: Deere & Company
    Inventors: Duane H. Ziegler, Charles P. Barbaro, D. Keith Dewey, Steven L. Wildemuth, Frederick W. Nelson, Kenneth D. Friend, Terence D. Pickett