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:
Jul. 15, 2003
Filed:
Sep. 10, 2001
Applicant:
Inventor:
Nils Virving, Hässelby, SE;
Assignee:
Valmet Fibertech AB, , SE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C 7/12 ;
U.S. Cl.
CPC ...
B02C 7/12 ;
Abstract
Refining elements for use in a disk refiner are provided, in which the refining elements include an outer surface with a plurality of raised bars separated by grooves, the raised bars including an upper surface having a first longitudinal edge and at least one step defining a second longitudinal edge at an intermediate height between the first longitudinal edge and the outer surface of the refining element.