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 8002213 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 23, 2011

Filed:

Aug. 17, 2007
Applicant:

Norbert Stehr, Grünstadt, DE;

Inventor:

Norbert Stehr, Grünstadt, DE;

Assignee:

Büler AG, Uzwil, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 17/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

An agitator mill has a grinding vessel and an agitator shaft arranged such that it can be driven to rotate therein. Fixed at the end of the agitator shaft is a last agitator disc, on which is fixed a substantially cylindrical cage having apertures. Arranged inside the cage is a screening device. The distance between a second to last agitator disc and the last agitator disc is such that a braided flow forms, while avoiding a preliminary screening of grinding stock on one hand and auxiliary grinding bodies and coarse grinding stock particles on the other hand. Formed in the last agitator disc are passages through which the grinding stock passes together with the auxiliary grinding bodies, at which time a separation of the auxiliary grinding bodies and the coarse grinding stock particles takes place within the separating chamber formed by the last agitator disc and the cage. Formed in the last agitator disc are depressions that promote the formation of a braided flow between the last agitator disc and an adjacent agitator disc.


Find Patent Forward Citations

Stehr, Norbert. (2011). Agitator mill (U.S. Patent No. 8002213). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8002213

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