The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7971808 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 05, 2011

Filed:

Jan. 04, 2008
Applicants:

Stefan Gerl, Werbach, DE;

Jens Sachweh, Höpfingen, DE;

Inventors:

Stefan Gerl, Werbach, DE;

Jens Sachweh, Höpfingen, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to a vertical grinding mill including a closed vertical milling container in which a screw conveyor is arranged for rotary drive so as to convey grinding bodies to the top. The package of grinding bodies adjusts itself during operation such that the surface thereof is configured to slope radially outwards and downwards and to end in the region of the bottom edge of an outlet for grinding stock. Gas is introduced into the milling container above the package of grinding bodies. The gas and grinding stock are discharged from the milling container via the outlet for grinding stock.


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