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:
Oct. 15, 2019
Filed:
Jun. 25, 2015
Valmet Technologies, Inc., Espoo, FI;
Upm-kymmene Corporation, Helsinki, FI;
Petteri Vuorio, Espoo, FI;
Jari Saarinen, Jämsä, FI;
Jari Heikkinen, Lappeenranta, FI;
Lauri Talikka, Lappeenranta, FI;
VALMET TECHNOLOGIES OY, Espoo, FI;
Abstract
A single-disc refiner () has a stationary refining element () and an opposed rotatable refining element (), each of which has a radially inner blade element () providing an inner refining surface area and a radially outer blade element providing an outer refining surface area. The inner and outer refining surface areas of each refining element together provide a refining surface of the refining element, the refining surfaces defining a feed zone () followed by a treatment zone () with a transition point therebetween located at a radial distance of 70-90% from the center of the refiner or at a radial distance of 50-80% from the innermost edge () of the refining element or at a radial distance of 20-50% from the inner edge () of the outer blade element () towards the outermost edge () of the refining element.