Patents by Inventor Stephen E. Cerven

Stephen E. Cerven 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: 7832345
    Abstract: An apparatus that cleanly severs and clears crop debris from a planting row or closes a furrow while causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept teeth extending about their periphery. The teeth include a beveled cutting edge on the outer edge of the teeth adapted to sever residue from the field or close a furrow. The discs are oriented substantially vertical to the ground. Two discs are used in combination to clear a pathway for planting seed or for closing a furrow.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: November 16, 2010
    Assignee: Yetter Manufacturing Company
    Inventors: Patrick Whalen, Stephen E. Cerven, Derek A. Litchfield
  • Patent number: 7240627
    Abstract: A residue coulter apparatus that cleanly severs and clears crop debris from a planting row, causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept shark type teeth extending about their periphery. The teeth include a double beveled cutting edge on the outer edge of the teeth adapted to sever residue from the field. The clearing discs are oriented substantially vertical to the ground. Two clearing discs are used in combination to clear a pathway for planting seed. The clearing discs are angled toward each other so that the leading edges of the clearing discs are pointed in a toe-in orientation. The present design effectively removes crop debris without over discharge and causes minimal soil disturbance.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: July 10, 2007
    Assignee: Yetter Manufacturing Company
    Inventors: Patrick Whalen, Stephen E. Cerven, Derek A. Litchfield