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. 13, 2022
Filed:
Feb. 08, 2018
Valmet Ab, Sundsvall, SE;
Karl Lönngren, Stockholm, SE;
Abstract
A refining disc () in a defibrator () for refining fibrous material is provided with non-central openings () for allowing steam developed in the refining space () during refining to flow from the front side to the backside of the refining disc (), where the front side is facing a second refining disc () and the backside is facing away from the second refining disc (). The refining disc () also comprises a central hole () for allowing steam () to flow from the backside to the front side at the rotational center of the refining disc (), and escape from the defibrator () backwards through the feed screw () without passing through the fibrous material () being refined in the refining space ().