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(11)

EP 4 548 028 A1

(12)

(43) Date of publication: 07.05.2025 Bulletin 2025/19 (21) Application number: 23747992.8 (22) Date of filing: 14.07.2023

(51) International Patent Classification (IPC):  F28D 7/00(2006.01) F28F 27/02(2006.01) F28D 21/00(2006.01) F22B 1/18(2006.01) (52) Cooperative Patent Classification (CPC): F28D 7/0083; F28D 21/001; F28F 27/02; F28F 2250/06; F22B 1/18 (86) International application number: PCT/EP2023/025330 (87) International publication number: WO 2024/017498 (25.01.2024 Gazette 2024/04)

(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: 20.07.2022 IT 202200015270 (71) Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L. 50127 Florence (IT)	(72) Inventors: NASINI, Ernesto 50127 Florence, Firenze (IT) MERLO, Roberto 50127 Florence, Firenze (IT) GENNARI, Giovanni 50127 Florence, Firenze (IT) SANTINI, Marco 50127 Florence, Firenze (IT) (74) Representative: Illingworth-Law, William Illingworth  Baker Hughes 245 Hammersmith Chalk Hill Road London W6 8DW London W6 8DW (GB)