Patents by Inventor Justin Andrew Widdifield

Justin Andrew Widdifield 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).

  • Collapsible cushion
    Patent number: 8424973
    Abstract: A method of mining a valuable metal or material in an ore body is described. The method comprises the steps of: a) placing a cushion in a stope whereby the cushion creates a void into which fragmented rock can expand during subsequent blasting operations for a second or subsequent panel; and, b) maintaining the void until blasting operations occur whereupon the void is caused to collapse to accommodate fragmented ore generated during blasting operations.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: April 23, 2013
    Assignee: MTI Products PTY Ltd.
    Inventors: Nicholas Grant Bodley, Terrence Peter Clarke, Justin Andrew Widdifield
  • Collapsible Cushion
    Publication number: 20100295359
    Abstract: A method of mining a valuable metal or material in an ore body is described. The method comprises the steps of: a) placing a cushion in a stope whereby the cushion creates a void into which fragmented rock can expand during subsequent blasting operations for a second or subsequent panel; and, b) maintaining the void until blasting operations occur whereupon the void is caused to collapse to accommodate fragmented ore generated during blasting operations.
    Type: Application
    Filed: November 12, 2009
    Publication date: November 25, 2010
    Applicant: MTI PRODUCTS PTY LTD
    Inventors: Nicholas Grant Bodley, Terrence Peter Clarke, Justin Andrew Widdifield