Patents by Inventor Donald F. Johnston, Jr.

Donald F. Johnston, Jr. 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).

  • Turf aerator core-cleaning systems
    Patent number: 6986393
    Abstract: An aerator plug-core cleaning system for ground surface collection of turf cores extracted from a turf core-aerating apparatus. The core-cleaning system comprises a core-cleaner that primarily attaches to either a walk-behind or tractor pulled aerator machine. The core-cleaner entraps and pushes the extracted cores along behind the core-aeration machine until being lifted in about a vertical manner by secondary attachment to a rear raise-able portion of the core-aeration machine at which point the cores are left in a pile for disposal.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: January 17, 2006
    Inventors: Donald F. Johnston, Jr., Andrew Johnston, Ian Johnston