Patents by Inventor John Raymond Wilkinson

John Raymond Wilkinson 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: 6763895
    Abstract: Soil cultivating apparatus which includes at least one rotary cutting assembly having a plurality of earth working implements (25, 26) spaced around a peripheral region of a rotary support member (18) mounted for rotation about a central upright axis of rotation. The implements (25, 26) depend downwardly from the support member (18) and are in first and second sets. Implements (25) of the first set each have a primary cutting edge extending upwardly, rearwardly and outwardly from a lower soil engaging extremity. Implements (26) of the second set each have a primary cutting edge extending upwardly rearwardly and inwardly from a lower soil engaging extremity. The lower soil engaging extremities of implements (25) of the first set are at a radial distance from the axis less than the radial distance of the extremities of the implements (26) of the second set.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: July 20, 2004
    Assignee: Wilkinsons Pty Ltd
    Inventor: John Raymond Wilkinson
  • Patent number: D442459
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: May 22, 2001
    Assignee: Wilkinsons Blacksmiths Pty Ltd.
    Inventor: John Raymond Wilkinson