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:
Jan. 22, 1991
Filed:
Feb. 20, 1990
Applicant:
Inventors:
Georges Berrebi, Bourg les Valence, FR;
Francois Ackermann, La Voulte sur Rhone, FR;
Assignee:
Europeenne de Retraitement, La Voulte sur Rhone, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07C / ;
U.S. Cl.
CPC ...
209691 ; 209434 ; 209459 ;
Abstract
The invention concerns a process and an apparatus for separating powdery materials shaped as balls or pellets. It is characterized by the use of a vibrating screw elevator (4) subjected to vibrations of an amplitude so selected as to produce on the screw turns (5), an upward flow of the particles to be removed, while maintaining a downward flow of the particles to be recovered. The invention provides in particular for the separation of round balls from broken balls.