(19)

(11)

EP 3 810 366 A1

(12)

(43) Date of publication: 28.04.2021 Bulletin 2021/17 (21) Application number: 19742487.2 (22) Date of filing: 18.06.2019

(51) International Patent Classification (IPC):  B24B 27/00(2006.01) B24B 9/00(2006.01) B24B 9/10(2006.01) B24B 47/22(2006.01) B24B 9/06(2006.01) (86) International application number: PCT/IB2019/055082 (87) International publication number: WO 2019/244021 (26.12.2019 Gazette 2019/52)

(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: 19.06.2018 IT 201800006453 (71) Applicant: Soltek S.r.l. 56012 Calcinaia (PI) (IT)	(72) Inventor: SIGNORINI, Giuliano 56025 Pontedera (PI) (IT) (74) Representative: Firmati, Leonardo  IXNEA S.r.l. Via Quirico Baldinucci, 14a 59100 Prato 59100 Prato (IT)