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(11)

EP 3 169 481 A1

(12)

(43) Date of publication: 24.05.2017 Bulletin 2017/21 (21) Application number: 15751127.0 (22) Date of filing: 10.07.2015

(51) International Patent Classification (IPC):  B24B 7/18(2006.01) C21B 7/06(2006.01) B28D 1/00(2006.01) B24B 27/00(2006.01) B25J 11/00(2006.01) (86) International application number: PCT/NL2015/050504 (87) International publication number: WO 2016/010422 (21.01.2016 Gazette 2016/03)

(84) Designated Contracting States: 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 Designated Extension States: BA ME Designated Validation States: MA (30) Priority: 15.07.2014 NL 2013192 (71) Applicant: Cobra Carbon Grinding B.V. 1812 RB Alkmaar (NL)	(72) Inventors: BLEIJENDAAL, Nico NL-1812 RB Alkmaar (NL) ROBBEN, Marcus Antonius Johannes Maria NL-1812 RB Alkmaar (NL) SOONIUS, Jan NL-1812 RB Alkmaar (NL) (74) Representative: Van Breda, Jacobus  Octrooibureau Los & Stigter B.V. Weteringschans 96 1017 XS Amsterdam 1017 XS Amsterdam (NL)