Patents by Inventor Jonathan S. Kelly

Jonathan S. Kelly 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).

  • Rotary cutter heads for mining machines
    Patent number: 4428619
    Abstract: A rotary cutter head having generally helical loading vanes for urging cut rock or mineral towards a mining machine supporting the cutter head is provided with air flow inducing means for inducing an air flow in a direction substantially away from the mining machine.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: January 31, 1984
    Assignee: Coal Industry (Patents) Limited
    Inventors: Brian A. Eagles, Jonathan S. Kelly