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.:

US 7169021 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 30, 2007

Filed:

Apr. 17, 2003
Applicant:

Olli Tuovinen, Tampere, FI;

Inventor:

Olli Tuovinen, Tampere, FI;

Assignee:

Metso Paper Inc., Helsinki, FI;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for controlling the water jet sharpening sequence of a pulp grinder is provided, wherein a high-pressure sharpening water jet is directed toward a surface of a pulpstone with a water sharpening apparatus. An actual quality value of the fiber pulp is determined for at least one variable, and a target quality value is defined for each of the at least one variable. The actual quality values and corresponding target quality values are transmitted to a control unit that includes an adjustment strategy set for controlling water sharpening of the pulpstone. According to the adjustment strategy, the treatment pressure and/or the treatment interval of the sharpening water jet is controlled relative to an error value between the target quality value and the actual quality value of the fiber pulp. An associated apparatus is also provided.


Find Patent Forward Citations

Tuovinen, Olli. (2007). Arrangement for treating pulpstone surface (U.S. Patent No. 7169021). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7169021

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