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:
Sep. 02, 2008
Filed:
Oct. 06, 2004
Håkan Sjöström, Tampere, FI;
Vesa Arjanmaa, Tampere, FI;
Per Fröberg, Tampere, FI;
Petteri Vuorio, Valkeakoski, FI;
Nils Virving, Hässelby, FI;
Juha-pekka Huhtanen, Tampere, FI;
Matti Kaarineva, Lempäälä, FI;
Håkan Sjöström, Tampere, FI;
Vesa Arjanmaa, Tampere, FI;
Per Fröberg, Tampere, FI;
Petteri Vuorio, Valkeakoski, FI;
Nils Virving, Hässelby, FI;
Juha-Pekka Huhtanen, Tampere, FI;
Matti Kaarineva, Lempäälä, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
A refining surface of a refining member, adapted for use with a refiner for defibrating a lignocellulose-containing material, is provided. Such a refining surface comprises a plurality of first grooves, each first groove being defined between two adjacent first bar portions of the refining surface, and extending between opposing first and second radial edges of the refining surface. The refining surface further comprises a plurality of second grooves, each second groove being defined between two adjacent second bar portions of the refining surface forming each first bar portion, and extending between two adjacent second grooves. The first bar portions are wider than the second bar portions, and each second bar portion are between about 1 mm and about 3 mm wide. A blade segment of a refining member is also provided.