Patents by Inventor Larry E. Tjaden

Larry E. Tjaden 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).

  • Three-point hitch guidance control
    Patent number: 5246077
    Abstract: A horizontal guidance control system for a standard three point tractor hitch is disclosed. The system employs the use of a manual control element which actuates a pair of hydraulic cylinders contained in a pair of hydraulic adjusters. The control element causes the extension of one cylinder and the retraction of the other cylinder, thereby causing controlled horizontal movement of a pair of pull links of the tractor hitch.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: September 21, 1993
    Inventors: Larry E. Tjaden, Leonard E. Tjaden