Patents by Inventor Hans-Otto Lutgendorf

Hans-Otto Lutgendorf 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).

  • Water-tight bore shaft foundation
    Patent number: 5176470
    Abstract: The lower end of an outwardly tight shaft structure (3) for a bore shaft (1) rests on a tilting joint arrangement (15, 20). This arrangement includes a hydraulic thrust bearing (15) at the end face of the shaft structure (3) and a hydraulic annular cylinder (20) at the circumference of the lower end of the shaft structure (3). Thus, this tilting joint arrangement (15, 20) is located between the shaft structure (3) and the base (10) and permits tilting of the shaft structure (3) relative to the ground (12) without impairing the water-tightness of the bore shaft foundation.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: January 5, 1993
    Assignee: Gewerkschaft Auguste Victoria
    Inventor: Hans-Otto Lutgendorf