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. 08, 2020
Filed:
Aug. 31, 2018
Valmet Ab, Sundsvall, SE;
Thommy Lindblom, Hägersten, SE;
VALMET AB, Sundsvall, SE;
Abstract
A refiner segment () for a refiner () intended for refining fibrous material () has a refining surface and is arrangeable to form a part of a refining surface of a refiner element () in the refiner (). The refiner segment () is provided with a pattern of bars () and intermediate grooves () extending along the refiner segment () in a substantially radial direction, and dams () extending between the bars () and protruding above the surface of the grooves (). Steam channels () are arranged through the bars () adjacent to an intersection between a bar () and a dam (), radially outside of a respective dam () with respect to an inner edge () of the refiner segment (), and at a trailing end of the respective dam () with respect to a first circumferential direction corresponding to an intended travelling direction () of the refiner segment (), where the steam channels () are configured to allow steam () flowing towards the inner edge () of the refiner segment () to pass through the steam channels () in a direction having a component directed opposite to the first circumferential direction ().