Patents Assigned to Polemate Pty Ltd.
  • Patent number: 5450912
    Abstract: An apparatus for excavation of earth around a pole embedded in an earth surface comprises a hollow auger in the form of a cylindrical drum with a helical flight about the outer wall thereof. The hollow auger is constructed in two halves to enable movement between an open position and a closed position embracing the pole. The hollow auger is rotatably journalled in a support frame and is driven by a drive motor engaging a spur gear around the upper position of the auger. The support frame is slidably mounted on a frame to enable extension and retraction of the auger.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: September 19, 1995
    Assignee: Polemate Pty Ltd.
    Inventors: Gavin J. Cahill, Ronald W. Lousick, Eric A. Falkenhagen