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.

Date of Patent:
Mar. 17, 2020

Filed:

Dec. 14, 2018
Applicant:

Andritz Inc., Glens Falls, NY (US);

Inventors:

Marc Berger, Pont-Rouge, CA;

Luc Gingras, Harrogate, GB;

Assignee:

Andritz Inc., Glens Falls, NY (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C 7/12 (2006.01); D21D 1/30 (2006.01);
U.S. Cl.
CPC ...
B02C 7/12 (2013.01); D21D 1/306 (2013.01);
Abstract

This disclosure relates to a refiner plate segment, mechanical refiners, and methods to manufacture a refiner plate segment having one or more water channels disposed in a variable substrate profile along the radial length of a refiner plate segment base and disposed between the refiner plate segment inlet and the primary refining section, wherein the variable substrate profile comprises an undulating curve configured to complement a second undulating curve on an opposing refiner plate, and wherein dimensions of the one or more water channels are sufficiently narrow to prevent wood chips from entering the water channels and sufficiently wide to provide a bypass path for the free water.


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