Patent · US Active

Blade element

US10953405B2 · kind B2 · utility

1Cited by

9References

13Claims

0Family size

Assignee

Valmet Technologies, Inc. · FI

Inventors

Christer Hedlund · Katrineholm, SE
Dino Muhic · Espoo, FI
Petteri Vuorio · Valkeakoski, FI
Anders Hawen · Tyresö, SE

Key dates

Filing date	Jun 6, 2016
Grant date	Mar 23, 2021
Priority date	—
Expiry date	Sep 17, 2037

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21D1/306
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A blade element (1) for a refiner for refining fibrous material comprises a refining surface (3) provided with blade bars (8, 10) and blade grooves (9, 11) there-between. The blade bars (8, 10) have side walls (8″, 8′″) facing away from one another. The side walls (8″, 8′″) of the at least one blade bar (8) comprise on both of its side walls (8″, 8′″) steps (14″, 14′″) which extend at least partly in the transversal direction relative to the side walls (8″, 8′″) of the blade bar (8) and away from one another.

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