(19)

(11)

EP 3 638 581 A1

(12)

(43) Date of publication: 22.04.2020 Bulletin 2020/17 (21) Application number: 18737986.2 (22) Date of filing: 07.06.2018

(51) International Patent Classification (IPC):  B63G 8/22(2006.01) B63G 8/40(2006.01) B63G 8/24(2006.01) (86) International application number: PCT/IB2018/054121 (87) International publication number: WO 2018/229611 (20.12.2018 Gazette 2018/51)

(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: 13.06.2017 IT 201700065613 (71) Applicant: Technology for Propulsion and Innovation S.r.l. 35121 Padova (IT)	(72) Inventor: BARATO, Francesco 35121 Padova (IT) (74) Representative: Feltrinelli, Secondo Andrea et al APTA S.r.l. Patent Department Via Ca' di Cozzi, 41 37124 Verona 37124 Verona (IT)