Blade segment of disc refiner

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United States of America Patent

PATENT NO 9765479
SERIAL NO

14741282

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Abstract

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A blade segment of a disc refiner for refining fibrous material has an inner circumference and an outer circumference as well as a first side edge and a second side edge which connect the inner circumference and the outer circumference. The side edges are curved, with one convex and the other concave. The segment has a refining surface with blade bars and grooves which define a pumping direction. The side edges of the blade segment curve in the vicinity of the inner circumference in the pumping direction, and in the vicinity of the outer circumference in a non-pumping direction.

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Patent Owner(s)

Patent OwnerAddress
VALMET TECHNOLOGIES INCKEILASATAMA 5 ESPOO FI-02150

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iisakkila, Tomi Valkeakoski, FI 5 6
Kaarineva, Matti Lempäälä, FI 8 36
Sjöström, Håkan Tampere, FI 7 6

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