(19)

(11)

EP 4 680 885 A1

(12)

(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24713731.8 (22) Date of filing: 14.03.2024

(51) International Patent Classification (IPC):  F17D 1/04(2006.01) F17D 3/01(2006.01) (52) Cooperative Patent Classification (CPC): F17C 2265/068; F17D 1/04; F17D 3/01 (86) International application number: PCT/IB2024/052478 (87) International publication number: WO 2024/189568 (19.09.2024 Gazette 2024/38)

(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: 16.03.2023 IT 202300004986 (71) Applicant: ISIF S.r.l. 52028 Arezzo Terranuova Bracciolini (IT)	(72) Inventor: ODORI, Mauro 52026 Castelfranco Piandiscò (IT) (74) Representative: Ruzzu, Giammario  Via Gulli, 5 40068 San Lazzaro di Savena (BO) 40068 San Lazzaro di Savena (BO) (IT)