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:
Feb. 23, 2021
Filed:
Nov. 12, 2018
Valmet Ab, Sundsvall, SE;
Thommy Lindblom, Hägersten, SE;
VALMET AB, Sundsvall, SE;
Abstract
A refiner segment for a refiner comprising refining zones provided with a pattern of bars arranged at a respective pumping feeding angle within a respective refining zone, and intermediate grooves between the bars, and dams extending between the bars and protruding above the surface of the grooves. The dams are arranged at least at the ends of at least some of the bars at the borders between the refining zones. Openings are formed at the borders between the refining zones, radially outside of the dams, where the openings are arranged such that a respective angle is formed between an imaginary line connecting the openings and a line which is perpendicular to a radius of the refiner segment, where the angle is directed towards the inner edge of the refiner segment, thereby allowing steam to pass through the openings and flow towards an inner edge of the refiner segment.