Patents Assigned to Foundation Constructors
  • Drilling system
    Patent number: 4793740
    Abstract: A drilling system is provided wherein a high pressure water jet is provided near the cutting tip of the auger, the water jet being directed upwardly into the slip stream of spoil to break up the spoil and reduce friction between the spoil and the auger.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: December 27, 1988
    Assignee: Foundation Constructors
    Inventor: Verne L. Schellhorn