Patents by Inventor Ingeborg Havemann

Ingeborg Havemann 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: 4577703
    Abstract: Difficulties are encountered in mining in making shot-firing boreholes from a narrow cross-heading into the lateral walls at right angles to the length of the cross-heading. The invention provides for this purpose a drilling unit with a flexible drilling shaft (5) formed by a steel spiral, which is brought up in the direction (7) of the cross-heading and is deviated within the unit substantially at right angles into the direction (10) of the borehole. The deviating station (3) provided for this purpose comprises, in a preferred embodiment, a turntable (11) fitted with pairs of rollers (12), which absorbs the substantial feed forces and reduces the wear on the flexible drilling shaft (5). The circulation fluid necessary for the drilling is conveyed through a pressure hose extending within the flexible shaft (5), which is connected pressure-tightly to the ends of the flexible shaft by means of special screw fittings.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: March 25, 1986
    Inventors: Frieda Cyriacy, Horst Albers, Ingeborg Havemann