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:
Sep. 28, 1999
Filed:
Sep. 18, 1996
Applicant:
Inventor:
Markku Eramaja, Valko, FI;
Assignee:
Sunds Defibrator Loviisa Oy, Valko, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07B / ; B03B / ;
U.S. Cl.
CPC ...
209 20 ; 2091391 ; 209468 ; 209137 ; 209502 ;
Abstract
Apparatus for separating heavy particles of material from lighter particles, e.g. for separating impurities from powdery or fragmental material, such as fibers or chips. The apparatus includes a carrier surface (1) which is pervious to gas, onto which the material (2) to be treated is supplied, as well as a device for applying gas impacts through the carrier surface (1) to the material (2) to be treated. The apparatus includes special valve elements (4) disposed below the carrier surface (1) to produce gas impacts.