Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Reexamination Certificate
2007-03-20
2007-03-20
Francis, Faye (Department: 3725)
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
C241S296000
Reexamination Certificate
active
10560660
ABSTRACT:
A refining surface for a refiner intended for defibrating lignocellulose-containing materials, the refiner having at least two refining surfaces arranged coaxially relative to each other, at least one of which rotates around a shaft, and between which the material to be defibrated is fed. The refining surfaces define grooves and between them ridges, at least part of the refining surface ridges being formed of at least two different ridge parts connected to each other in such a way that one ridge part is farther ahead in the rotation direction of the refining surface than the other ridge part. Further, at least in some ridge parts, the front wall in the rotation direction of the refining surface is over at least part of its length substantially inclined.
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International Search Report for PCT/FI2004/000360 completed Oct. 18, 2004.
Written Opinion of the International Searching Authority form PCT/FI2004/000360 mailed Oct. 20, 2004.
Office Action issued in Finnish Priority Appl. No. 20030917 dated Feb. 3, 2004.
Kaarineva Matti
Vuorio Petteri
Alston & Bird LLP
Francis Faye
Metso Paper Inc.
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