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(11)

EP 3 221 086 A1

(12)

(43) Date of publication: 27.09.2017 Bulletin 2017/39 (21) Application number: 15726314.6 (22) Date of filing: 15.04.2015

(51) International Patent Classification (IPC):  B24C 3/32(2006.01) B24C 9/00(2006.01) B24C 5/04(2006.01) (86) International application number: PCT/IB2015/052733 (87) International publication number: WO 2016/079599 (26.05.2016 Gazette 2016/21)

(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: 20.11.2014 IT PC20140018 (71) Applicant: Effegi Brega S.r.L. 29010 Sarmato (PC) (IT)	(72) Inventor: REBECCHI, Piero I-29010 Sarmato (PC) (IT) (74) Representative: Fisauli, Beatrice A. M.  Con Lor S.p.A Via Renato Fucini, 5 20133 Milano 20133 Milano (IT)