(19)

(11)

EP 4 816 724 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 25704979.1 (22) Date of filing: 17.01.2025

(51) International Patent Classification (IPC):  F16L 11/04(2006.01) B29C 53/66(2006.01) B29C 70/50(2006.01) F16L 59/14(2006.01) B29C 53/32(2006.01) B29C 63/08(2006.01) F16L 11/11(2006.01) F16L 59/153(2006.01) (52) Cooperative Patent Classification (CPC): F16L 2011/047; F16L 11/042; F16L 11/045; F16L 11/11; F16L 59/153; F16L 59/143; B29D 23/001; B29C 44/324; B29C 44/321; B29C 44/334; B29C 53/62; B29C 53/22; B29C 53/58 (86) International application number: PCT/IB2025/050517 (87) International publication number: WO 2025/154012 (24.07.2025 Gazette 2025/30)

(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: GE KH MA MD TN (30) Priority: 19.01.2024 IT 202400000981 (71) Applicant: Ecotech S.r.l. 73100 Lecce (LE) (IT)	(72) Inventors: TONOLI, Lorenzo 73100 Lecce (IT) FARINA, Stefano Fedele 73100 Lecce (IT) (74) Representative: M. Zardi & Co S.A.  Via G. B. Pioda, 6 6900 Lugano 6900 Lugano (CH)