Patents by Inventor Warren L. Tompson

Warren L. Tompson 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).

  • Remotely adjustable disk leveling system
    Patent number: 4809786
    Abstract: Adjustable link structure for providing on-to-go disk harrow adjustment from the cab of the towing vehicle. The mechanism for automatically maintaining the frame of a disk harrow at a level condition as the frame is raised and lowered relative to the ground includes an adjustable link member with a rotary hydraulic motor utilized to adjust a mechanical screw type mechanism to maintain a set adjustment position independently of continued fluid pressure to the motor.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: March 7, 1989
    Assignee: Deere & Company
    Inventors: Kevin W. Hoehn, Warren L. Tompson