Patents by Inventor Norbert Aufsfeld

Norbert Aufsfeld 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).

  • Publication number: 20080210797
    Abstract: In order to provide a tubular mill which is lightweight and easy and inexpensive to manufacture, the partial lengths of the tubular mill shell each are screwed together from segments which are distributed around the circumference and are made of thin-walled sheet-metal material, wherein rigid flanges are integrally formed onto the abutting sides of adjacent segments, in particular by folding the edges of the sheet-metal, and the flanges, which come to be positioned in the longitudinal direction of the mill tube, of adjacent segments are screwed to one another, and rigid flanges are to be integrally formed onto the two other sides, positioned opposite one another, of the segments, likewise advantageously by folding the edges of the sheet-metal, and the flanges, each joined to form a flange ring, of adjacent partial lengths are clamped to one another by means of clamping elements.
    Type: Application
    Filed: April 20, 2006
    Publication date: September 4, 2008
    Inventors: Alexander Hagedorn, Norbert Aufsfeld
  • Patent number: 6655617
    Abstract: A simply and compactly built drive system for a tube mill is provided whose force transmission is no longer threatened by flexures and other deformations of the grinding tube. A one-piece ring gear having a diameter less than or equal to the diameter of the grinding tube is attached to the small diameter end of a discharge cone of the grinding tube.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 2, 2003
    Assignee: KHD Humboldt Wedag AG
    Inventors: Alexander Hagedorn, Norbert Aufsfeld
  • Publication number: 20020158157
    Abstract: A simply and compactly built drive system for a tube mill is provided whose force transmission is no longer threatened by flexures and other deformations of the grinding tube. A one-piece ring gear having a diameter less than or equal to the diameter of the grinding tube is attached to the small diameter end of a discharge cone of the grinding tube.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 31, 2002
    Inventors: Alexander Hagedorn, Norbert Aufsfeld