Patents by Inventor Kevin F. Ohlman

Kevin F. Ohlman 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).

  • Apparatus and method for preparing agricultural ground for planting
    Patent number: 6578640
    Abstract: The apparatus of the present invention prepares agricultural ground for planting by performing multiple functions in a single pass over the field. The apparatus includes rolling choppers and coulters for cutting crop residue, and disks and rippers for tilling the soil. The apparatus also includes a harrow for further mixing the soil and crop residue, and spreading the mixture evenly over the field. The coulters, disks, and rippers are mounted in sets on independent arms which float freely upwardly and downwardly to accommodate variations in the ground surface.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: June 17, 2003
    Assignee: Ohlman Engineering
    Inventors: Kevin F. Ohlman, Donald F. Ohlman, David D. Ohlman