Patents by Inventor Alexander Stauffer

Alexander Stauffer 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).

  • Drill head and device with a sliding contact electrical connection for drilling a bore in the ground
    Patent number: 9840894
    Abstract: The invention relates to a drill head and a device for drilling a bore in the ground, the drill head having a first unit coupleable with an inner drill pipe of a double drill pipe assembly and a second unit coupleable with the outer drill pipe of the double drill pipe assembly. By means of the inner drill pipe the first unit is rotatable about an axis of rotation relative to the second unit which is drivable by means of the outer drill pipe. The drill head has a sliding contact arrangement for establishing an electrical connection between the first unit and the second unit.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: December 12, 2017
    Assignee: TERRA AG FÜR TIEFBAUTECHNIK
    Inventors: Dietmar Jenne, Alexander Stauffer
  • DRILL HEAD AND DEVICE FOR DRILLING A BORE IN THE GROUND
    Publication number: 20150275626
    Abstract: The invention relates to a drill head and a device for drilling a bore in the ground, the drill head having a first unit coupleable with an inner drill pipe of a double drill pipe assembly and a second unit coupleable with the outer drill pipe of the double drill pipe assembly. By means of the inner drill pipe the first unit is rotatable about an axis of rotation relative to the second unit which is drivable by means of the outer drill pipe. The drill head has a sliding contact arrangement for establishing an electrical connection between the first unit and the second unit.
    Type: Application
    Filed: March 18, 2015
    Publication date: October 1, 2015
    Inventors: Dietmar Jenne, Alexander Stauffer