Patents by Inventor Helmut Kolditz

Helmut Kolditz 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).

  • Patent number: 4732226
    Abstract: A shaft drilling machine comprises a drill head carrying drill tools thereon, a device for guiding the drill head in a shaft, a device for advancing the drill head in the shaft, and drive aggregates which are lowered into the shaft together with the drill head and driving the latter. A sluice for providing a rinsing fluid is arranged in a pilot drill. A rinsing conduit and an ascending conduit for extracting from the shaft a drilled material-rinsing fluid mixture generated during the drilling operation are connected to the sluice which is formed as a bucket wheel.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: March 22, 1988
    Assignee: Turmag Turbo-Maschinen AG and Gesellschaft Fuer Strahlen- und Umweltforschung Muenchen MBH
    Inventors: Wolfgang Ebeling, Helmut Kolditz
  • Patent number: 4705120
    Abstract: A drilling machine for drilling descending large boreholes in earth or rock tructures, comprises an elongated drill pipe driven by a drive machine positioned outside a borehole being drilled, a drill head connected to said pipe and a support device for a drill head. A fluid-supplying device having a descending conduit, supplying fluid from the fluid supplying device to the drill head, is further provided in the drilling machine. A sluice charged with the mixture of the material drilled and the fluid is arranged in the drill head and driven by the drillpipe. The support device is secured in the machine against rotation.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: November 10, 1987
    Assignees: Turmag Turbo-Maschinen-AG, Nuesse & Graefer, Gesellschaft fuer Strahlen-und Umweltsforschung Muenchen mbH (GSF)
    Inventors: Wolfgang Ebeling, Helmut Kolditz