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:
Nov. 04, 2008
Filed:
Aug. 20, 2004
Applicant:
Nils Virving, Hässelby, SE;
Inventor:
Nils Virving, Hässelby, SE;
Assignee:
Metso Paper, Inc., , FI;
Primary Examiner:
Int. Cl.
CPC ...
B02C 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Refining elements are disclosed for use in the refining of fibrous material in which the refining elements include a pattern of bars and intermediate grooves between the bars. The bars extend in an arc-shaped direction outwardly over the refining element and the upper surface of the bars includes smaller grooves which form angles of from about 10° to 90° with respect to the longitudinal direction of the bars so that the smaller grooves on the bars extend substantially radially.