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:
Mar. 26, 2002
Filed:
Aug. 01, 2000
Kjell Forslund, Sundsbruk, SE;
Klas Kriström, Kovland, SE;
Valmet Fibertech Aktiebolag, , SE;
Abstract
A screen device for separating fiber suspensions comprises a screen ( ) defining a central chamber ( ), and a rotor ( ) in the central chamber having a first ( ) and a second ( ) rotor portion, respectively, provided with first ( ) and second ( ) pulsation elements, respectively, for pulsating the suspension close to the screen along a first ( ) an a second ( ) axial screen portion, respectively, of the screen. The first rotor portion ( ) and the first axial screen portion ( ) define a first screen chamber ( ) and the second rotor portion ( ) and the second axial screen portion ( ) define a second screen chamber ( ). Distribution means ( ) are provided for dividing the incoming fiber suspension into two part streams having the same axial directions in relation to the rotor and for distributing the two part streams to the first and second screen chambers ( ), respectively.