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:
Aug. 13, 2019
Filed:
May. 08, 2017
Applicant:
Valmet Ab, Sundsvall, SE;
Inventor:
Thommy Lindblom, Hägersten, SE;
Assignee:
Valmet AB, , SE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C 7/00 (2006.01); B02C 7/02 (2006.01); B02C 7/12 (2006.01); D21D 1/30 (2006.01); B02C 7/04 (2006.01); D21C 3/22 (2006.01);
U.S. Cl.
CPC ...
D21D 1/306 (2013.01); B02C 7/00 (2013.01); B02C 7/02 (2013.01); B02C 7/04 (2013.01); B02C 7/12 (2013.01); D21C 3/222 (2013.01); D21D 1/30 (2013.01); D21D 1/303 (2013.01);
Abstract
The invention relates to a refiner plate segment in a refiner plate for mechanically refining of lignocellulosic material in a refiner, said refiner plate segment comprising at least a first, generally radially extending bar, a second, generally radially extending bar, a groove arranged and defined between said first, generally radially extending bar and said second, generally radially extending bar, and a main dam, which has a height H and is arranged in the groove, wherein a pre-dam is arranged in front of the main dam, said pre-dam has a height h which is less than the height H of the main dam.