Patents by Inventor Karl Legner

Karl Legner 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).

  • Floatation arrangement
    Patent number: 4448681
    Abstract: An arrangement for floatation of solid particles from liquids such as from sewage, particularly for settling of coal from a conditioned pulp, has a conditioning device from which a pulp flows in a predetermined direction, gasifying device having a gasifying surface extending parallel to the pulp flow direction, and a separating device having a substantially upright conical container for foam formation, a level controlling element, and bubble generator composed of an elastic and porous synthetic plastic material.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: May 15, 1984
    Assignees: Bergwerksverband GmbH, Ruhrkohle AG
    Inventors: Hans Ludke, Albert Bahr, Friedrich-Wilhelm Mehrhoff, Karl Legner