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.:
Date of Patent:
Jun. 26, 1990
Filed:
Mar. 22, 1985
Applicant:
Inventors:
Erich Pichlmaier, Lorenzen, AT;
Manfred Zoller, Linz, AT;
Assignee:
Voest-Alpine Aktiengesellschaft, Linz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241183 ; 241299 ;
Abstract
An internal lining for cylindrical ball mills has riffles approximately extending in circumferential direction and webs located between the riffles and further has elevations and/or depressions arranged transversely to the circumferential direction. This allows fine grinding between the balls and the riffles. The balls are lifted to a higher level by the elevations and/or the depressions and the balls are better agitated within the heap of balls effecting coarse grinding.