Patents by Inventor Thomas George Chapman

Thomas George Chapman 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).

  • Tool retaining mechanism
    Patent number: 7210540
    Abstract: A securing arrangement for a tool (7) of an agricultural tillage implement of a type having a tapered interconnection between a socket (5) on the tool and an adaptor piece (3) adapted for mounting onto a tine (1) of the tillage implement. The adaptor piece (3) has a recess (9) which can be an aperture or a pair of transverse arcuate slots (31) for receiving a retaining pin(11). The socket (5) on the tool has notches (15) on its opposed sides and a portion (13) on the retaining pin in use engages into at least one of the notches (15) to prevent disengagement of the socket (5) from the adaptor piece (3). The adaptor piece can be integral with the tine.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: May 1, 2007
    Assignee: Osmundson Australia Pty Ltd
    Inventors: Graeme Stanley Ward, Thomas George Chapman
  • Tillage point
    Patent number: D411546
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: June 29, 1999
    Assignee: Farmland Pty Ltd
    Inventor: Thomas George Chapman
  • Tillage point
    Patent number: D415773
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: October 26, 1999
    Assignee: Farmland Pty Ltd
    Inventor: Thomas George Chapman