Patents by Inventor Wilhelm Geiger

Wilhelm Geiger 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).

  • Column seal
    Patent number: 4255363
    Abstract: Seal in a column with one or a plurality of trays in which the trays have at their periphery circular recesses in the form of a circular slot. Profiled seals resting against the wall of the column engage in the recesses. The trays have blind holes which at a distance from the periphery of the tray extending down through the circumferential surface through the circular slot. Locking means, preferably wedges, engage in the blind holes to press with adjustable pressure, the profiled seals against the wall of the column.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: March 10, 1981
    Assignee: Sigri Elektrographit Gesellschaft mit beschrankter Haftung
    Inventors: Wilhelm Geiger, Adolf Swozil