Patents by Inventor Ronald A. Filbrun

Ronald A. Filbrun 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).

  • Patent number: 4366867
    Abstract: A horizonally folding agricultural implement, such as a corn planter, comprising a main frame section with a hitch extending perpendicular therefrom for attachment to a vertically movable drawbar of a farm tractor, and a forwardly folding end wing section hinged to each outer end of the main frame section by a generally vertical pivot hinge, with the pivot hinge including a first and second set of pivot bushings rigidly attached to the abutting ends of the main frame section and the end wing sections respectively in vertical axial alignment with each other, the top end of the pivot pin having a mounting plate secured thereto, with a first hydraulic actuating assembly having one end operatively connected to the rigid plate and the other end operatively connected to the main frame section, and a second hydraulic actuating assembly having one end operatively connected to the rigid mounting plate and the other end thereof operatively connected to the folding wing section, thereby, upon actuation of the hydraulic
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: January 4, 1983
    Inventor: Ronald A. Filbrun