Patent · US Active

Blade segment for refiner

US11142869B2 · kind B2 · utility

2Cited by

7References

28Claims

0Family size

Assignee

Valmet Technologies, Inc. · FI

Inventors

Håkan Sjöström · Helsinki, FI
Marko Loijas · Valkeakoski, FI
Matti Kaarineva · Helsinki, FI
Tomi Iisakkila · Valkeakoski, FI
Markku Partanen · Valkeakoski, FI

Key dates

Filing date	May 10, 2018
Grant date	Oct 12, 2021
Priority date	—
Expiry date	Sep 17, 2039

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21D1/306
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A blade segment (4, 8, 8a, 8b) for a refiner comprises an inner end edge (20) and an outer end edge (21) and a first side edge (22) and a second side edge (23) opposite to the first side edge (22), the first side edge (22) and the second side edge (23) extending between the inner end edge (20) and the outer end edge (21), and a refining surface (29) comprising blade bars (27) and blade grooves (28) therebetween on a front surface (25) of the blade segment (4, 8, 8a, 8b). At least one side edge (22, 23) of the blade segment (4, 8, 8a, 8b) comprises at least one opening (14a, 14b, 14c, 14d, 14e, 14f, 14g) that extends from the side edge (22, 23) toward the opposite side edge (22, 23).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.