(19)

(11)

EP 4 479 635 A1

(12)

(43) Date of publication: 25.12.2024 Bulletin 2024/52 (21) Application number: 23709752.2 (22) Date of filing: 14.02.2023

(51) International Patent Classification (IPC):  F01L 1/18(2006.01) F01L 13/00(2006.01) F01L 1/26(2006.01) (52) Cooperative Patent Classification (CPC): F01L 2001/186; F01L 1/181; F01L 1/26; F01L 13/0015; F01L 13/0021; F01L 2013/101; F01L 2001/0537 (86) International application number: PCT/IB2023/051320 (87) International publication number: WO 2023/156899 (24.08.2023 Gazette 2023/34)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 15.02.2022 IT 202200002711 (71) Applicant: Piaggio & C. S.P.A. 56025 Pontedera Pisa (IT)	(72) Inventor: MARIOTTI, Walter 56025 Pontedera (PI) (IT) (74) Representative: Mannucci, Michele et al Ufficio Tecnico Ing. A. Mannucci S.r.l. Via della Scala, 4 50123 Firenze 50123 Firenze (IT)