Patents Assigned to Hareninvest
  • Soil displacement auger head for installing piles in the soil
    Patent number: 5722498
    Abstract: Soil displacement auger head for installing piles in the soil, having a tip, a displacement body having at least over a lower portion a core diameter increasing in diameter in a direction away from the tip, and at least one screw flange extending at least over the lower portion of the displacement body. To obtain a more efficient displacement, the pitch of the screw flange increases and the core diameter of the displacement body increases preferably discontinuously via a number of transition slopes.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: March 3, 1998
    Assignee: Hareninvest
    Inventors: William Frans Van Impe, Guy Adolf August Cortvrindt