Patents by Inventor Cameron J. MacDonald

Cameron J. MacDonald 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).

  • Methods of construction and implements therefor
    Patent number: 5253959
    Abstract: The invention is directed to construction implements and methods for their use in the construction of retaining walls, revetments, road ways, suspended floor spans and the like. The basic element is a support sheet (1) comprising an essentially quadrangular sheet folded about at least one longitudinal axis (2) to produce at least one fold in the sheet. The basic element can be used to construct a load bearing surface at any angle. The basic element can be driven into the ground with the aid of various adapters (6) and attachments (17). Optionally, for additional strength, the sheet can be tied to the grounds by various anchor (26) (52) and rod assemblies (35). Each anchor is pivotally connected to the rod and positioned in the ground in a closed position. When appropriate tension is applied to the rod, the anchor assumes an open position and bites into the ground.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: October 19, 1993
    Assignee: Cenefill Pty Ltd
    Inventors: Ian G. MacDonald, Ian R. MacDonald, Cameron J. MacDonald
  • Reaming tool
    Patent number: D328906
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: August 25, 1992
    Assignee: Cenefill Pty Ltd
    Inventors: Ian R. MacDonald, Ian G. MacDonald, Cameron J. MacDonald
  • Set of jaws for engaging a sheet metal support wall
    Patent number: D332338
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: January 5, 1993
    Assignee: Cenefill Pty Ltd.
    Inventors: Ian R. MacDonald, Ian G. MacDonald, Cameron J. MacDonald