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:
Dec. 27, 2016
Filed:
Jun. 28, 2012
Applicant:
Örjan Ahlgren, Sundsvall, SE;
Inventor:
Örjan Ahlgren, Sundsvall, SE;
Assignee:
Valmet AB, , SE;
Primary Examiner:
Int. Cl.
CPC ...
B02C 7/11 (2006.01); D21B 1/22 (2006.01); D21D 1/30 (2006.01);
U.S. Cl.
CPC ...
D21B 1/22 (2013.01); B02C 7/11 (2013.01); D21D 1/30 (2013.01);
Abstract
A feed screw for feeding lignocellulosic material to a rotary disc refiner is disclosed. The feed screw includes at least one peripheral thread for feeding the lignocellulosic material axially towards the disc refiner and the feed screw feeds the lignocellulosic material from its upstream end towards its downstream end through the center of the opposed grinding surfaces of the disc refiner, the downstream end of the peripheral thread including an angled end part disposed at an angle with respect to the peripheral thread such that the lignocellulosic material is redirected in a radial direction as it leaves the end of the peripheral thread.