(19)

(11)

EP 3 774 056 A1

(12)

(43) Date of publication: 17.02.2021 Bulletin 2021/07 (21) Application number: 19724611.9 (22) Date of filing: 11.04.2019

(51) International Patent Classification (IPC):  B02C 18/00(2006.01) B02C 23/10(2006.01) B02C 18/14(2006.01) B02C 23/14(2006.01) B02C 25/00(2006.01) B02C 18/18(2006.01) (86) International application number: PCT/IB2019/052984 (87) International publication number: WO 2019/198022 (17.10.2019 Gazette 2019/42)

(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: KH MA MD TN (30) Priority: 12.04.2018 IT 201800004456 (71) Applicant: Palmieri S.p.A. 40041 Gaggio Montano (BO) frazione Silla (IT)	(72) Inventor: PALMIERI, Silvano 40041 Gaggio Montano (BO), Frazione Silla (IT) (74) Representative: Brunacci, Marco  BRUNACCI & PARTNERS S.r.l. Via Scaglia Est, 19-31 41126 Modena 41126 Modena (IT)