Patents by Inventor Robert A. Rowan

Robert A. Rowan 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: 4343511
    Abstract: A high capacity wagon for silage and the like has a gravity-assisted rear inclined dumping wall with high ground clearance in both the full open and all intermediate positions. A simplified positive latch mechanism for the dumping wall is biased in the latching position and easily released by the operator of a towing tractor. The necessity for tilting the entire body of the wagon to completely dump its contents is eliminated.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: August 10, 1982
    Inventors: Robert A. Rowan, Leroy Mathis
  • Patent number: 4266510
    Abstract: Juxtaposed pairs of upright portable bunker wall sections are erected on level ground in longitudinal alignment and tied together and braced by a system of adjustable and portable bracing units along the length of the elongated open ended and open top silage bunker thus formed. The bunker is filled with silage up to a proper level by a mobile loading machine with the formation of the silage bunk progressing rearwardly. As the silage bunk is thus formed, the forwardmost bunker wall sections are shifted to the rear end of the bunker to enable the formation of a uniform depth silage bunk of any desired length. As bunker wall sections are removed, the formed or molded silage bunk is covered and protected by a dark plastic film.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: May 12, 1981
    Inventors: Robert A. Rowan, Leroy Mathis
  • Patent number: 4050521
    Abstract: A turnplow and a subsoiler are attached to a common draft beam with the subsoiler pivotally mounted and counter-weighted so that lifting of the implement will cause automatic retraction of the subsoiler relative to the turnplow. A drag point on the subsoiler engages the ground when the implement is lowered and thereby moves the subsoiler to an active position below the turnplow. Simplicity of construction is featured.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: September 27, 1977
    Inventor: Robert A. Rowan