Patents by Inventor Karl-Heinz Alker

Karl-Heinz Alker 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).

  • Tube mill
    Patent number: 4664322
    Abstract: The invention relates to a tube mill in which the cylinder of the drying chamber and the transition wall which it supports are divided centrally or a number of times in the axial direction so that this cylinder and the transition wall can be replaced without the grinding elements having to be removed from the grinding chamber.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: May 12, 1987
    Assignee: Krupp Polysius AG
    Inventors: Heinrich Henne, Norbert Patzelt, Karl-Heinz Alker
  • Adjustable lifting wall for tube mill
    Patent number: 4089477
    Abstract: This invention relates to a lifting wall for incorporation in a tube mill having two support plates divided into segments, intermediately disposed radially adjustable lifting vanes and a central transfer cone.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: May 16, 1978
    Assignee: Polysius AG
    Inventors: Peter Tiggesbaumker, Karl-Heinz Alker