Patents by Inventor Michael Key?ner

Michael Key?ner 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).

  • Roller mill
    Patent number: 7690591
    Abstract: The invention relates to a roller mill, particularly intended for dressing ores. To reduce the energy demand for comminution and classifying a grinding product, a classifying device is positioned below the grinding area and to it is supplied the comminuted ground material under gravity action, as well as classifying air from an annular chamber in the lower region of the grinding bowl and which has at least one fine material outlet and coarse material outlet.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: April 6, 2010
    Assignee: Loesche, GmbH
    Inventors: André Baetz, Michael Keyβner, Udo Meyer