EP 3423235 B1 20220824 - DEPRESSED CENTER GRINDING WHEEL
Title (en)
DEPRESSED CENTER GRINDING WHEEL
Title (de)
SCHLEIFSCHEIBE MIT ZURÜCKGESETZTER MITTE
Title (fr)
ROUE DE MEULAGE À CENTRE RENFONCÉ
Publication
Application
Priority
- US 201662302977 P 20160303
- US 2017019670 W 20170227
Abstract (en)
[origin: WO2017151498A1] A depressed center grinding wheel comprises an abrasive disc. The abrasive disc comprises a working layer, an intermediate layer, a back layer, and at least two reinforcing scrims. The working layer comprises first abrasive particles retained in a first binder material. The first abrasive particles include from 40 to 100 weight percent of first shaped abrasive particles. The back layer comprises second abrasive particles retained in a second binder material. The second abrasive particles include first crushed abrasive particles and are essentially free of shaped abrasive particles. The intermediate layer is disposed between the working layer and the back layer. The intermediate layer comprises third abrasive particles retained in a third binder material. The third abrasive particles include 25 to 75 weight percent of second shaped abrasive particles.
IPC 8 full level
CPC (source: EP KR US)
B24D 5/14 (2013.01 - EP KR US); B24D 7/14 (2013.01 - EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017151498 A1 20170908; CA 3016197 A1 20170908; CN 108778629 A 20181109; EP 3423235 A1 20190109; EP 3423235 B1 20220824; JP 2019511375 A 20190425; JP 7092435 B2 20220628; KR 20180120711 A 20181106; MX 2018010142 A 20181129; US 2019030684 A1 20190131
DOCDB simple family (application)
US 2017019670 W 20170227; CA 3016197 A 20170227; CN 201780014379 A 20170227; EP 17709891 A 20170227; JP 2018545997 A 20170227; KR 20187027643 A 20170227; MX 2018010142 A 20170227; US 201716077120 A 20170227