Patents by Inventor August Schiffermuller

August Schiffermuller 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).

  • Aerating apparatus
    Patent number: 4721562
    Abstract: The aeration of dispersions, especially the aeration of fiber suspensions in a flotation apparatus 1, is performed with a ring injector 2 to which air is delivered through air feed ducts 11 in the mixing section 4. The annular gap forming in the ring injector 2 is thus aerated inside and out. The center core 7, which tapers in the direction of the greatest free cross section Q4 of the ring injector 2, is provided with a fin 56 which prevents the rotation of the dispersion.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: January 26, 1988
    Assignees: Feldmuele Aktiengesellschaft, E. et. M. Lamort S.A.
    Inventors: Wolfgang Barnscheidt, Horst von Borries, Robert Rautenbach, August Schiffermuller, Hubert Zimmermann, Jean-Pierre Lamort