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.

Date of Patent:
Dec. 27, 2022

Filed:

Jan. 22, 2019
Applicant:

Valmet Ab, Sundsvall, SE;

Inventor:

Thommy Lindblom, Hägersten, SE;

Assignee:

VALMET AB, Sundsvall, SE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21D 1/30 (2006.01); B02C 7/12 (2006.01);
U.S. Cl.
CPC ...
D21D 1/306 (2013.01); B02C 7/12 (2013.01); D21D 1/303 (2013.01);
Abstract

A refiner segment that includes a center area. The refiner segment includes a number N, N≥2, of bar zone that are arranged at different radial positions with regard to a radial direction R extending from the center area of the refiner disc towards the periphery of the refiner segment. Each of the bar zones are defined by a corresponding set of refining bars that are distributed angularly and encircles the center area. The refining bars belonging to different but neighboring bar zones are angularly offset and refining bars belonging to different but neighboring bar zones are arranged in such a way that a tangential direction of a particular refining bar belonging to a bar zone points in a direction towards the mid-point between two refining bars belonging to a neighboring bar zone.


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