(19)

(11)

EP 3 833 892 A1

(12)

(43) Date of publication: 16.06.2021 Bulletin 2021/24 (21) Application number: 19769579.4 (22) Date of filing: 06.08.2019

(51) International Patent Classification (IPC):  F16J 9/20(2006.01) F16J 9/26(2006.01) (86) International application number: PCT/IB2019/056691 (87) International publication number: WO 2020/031088 (13.02.2020 Gazette 2020/07)

(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: 06.08.2018 IT 201800007888 (71) Applicant: Qin S.r.l. 16163 Genova (IT)	(72) Inventor: MARIANI, Massimo 16163 Genova (IT) (74) Representative: Plebani, Rinaldo et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)