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(11)

EP 4 739 439 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24746428.2 (22) Date of filing: 26.06.2024

(51) International Patent Classification (IPC):  B05B 1/04(2006.01) F28D 7/16(2006.01) F28F 25/06(2006.01) F28F 9/22(2006.01) F28D 3/02(2006.01) F28D 21/00(2006.01) F28D 3/04(2006.01) (52) Cooperative Patent Classification (CPC): B05B 1/044; B05B 1/046; F28F 25/06; F28D 21/0017; F28D 3/02; F28D 7/16; F28F 2009/224; F28D 3/04 (86) International application number: PCT/IB2024/056190 (87) International publication number: WO 2025/008713 (09.01.2025 Gazette 2025/02)

(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: 04.07.2023 IT 202300013911 (71) Applicant: Wieland Provides Srl 04100 Latina LT (IT)	(72) Inventors: PROVENZIANI, Franco 04100 Latina LT (IT) PITRELLI, Paolo 04100 Latina LT (IT) PAGANO, Luca 80131 Napoli NA (IT) (74) Representative: Papa, Elisabetta et al Società Italiana Brevetti S.p.A Piazza di Pietra, 39 00186 Roma 00186 Roma (IT)