Patents by Inventor Jonn W. Hill

Jonn W. Hill 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).

  • Plug aerator
    Patent number: 6675905
    Abstract: A method and apparatus for core extracting plug aerator comprises a main frame, a draw bar coupled to the main frame and configured to couple a motorized device to the main frame, and pivoting side supports coupled to the main frame, wherein the side supports pivot between and are secured in a moving position and an aerating position. The plug aerator further comprises rotating wheels coupled to the side supports and a longitudinal support system coupled to the main frame, the longitudinal support system comprises a plugger system comprising articulating tines.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: January 13, 2004
    Assignee: Ohio Steel Industries, Inc.
    Inventors: Jonn W. Hill, Elmer J. Chatin