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:
Oct. 28, 1986
Filed:
Jul. 03, 1984
Applicant:
Inventors:
Kaj O Henricson, Kotka, FI;
Pekka O Peltola, Anjala, FI;
Assignee:
A. Ahlstrom Osakeyhtio, Noormarkku, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21B / ;
U.S. Cl.
CPC ...
162261 ; 162-4 ; 162 28 ; 241 4611 ; 241 74 ; 4151 / ; 4151 / ;
Abstract
Cellulose pulp or recycled paper is defiberized, screened and pumped. Initial defiberizing, separation of non-disintegrated material, final defiberizing and pumping of the defiberized pulp are performed at a consistency of 6 to 18%, preferably 8 to 12%. Preferably all operations are performed at the same consistency. A defiberizing rotor is disposed in front of an impeller in the inlet of a centrifugal pump. A screen plate is mounted close to the defiberizing rotor. Defiberizing elements are arranged on the other side of the screen plate to move close to the screen surface.