(19)

(11)

EP 4 211 404 A1

(12)

(43) Date of publication: 19.07.2023 Bulletin 2023/29 (21) Application number: 21783345.8 (22) Date of filing: 07.09.2021

(51) International Patent Classification (IPC):  F25B 7/00(2006.01) F25B 9/00(2006.01) F25B 30/06(2006.01) F25B 41/00(2021.01) F25B 25/00(2006.01) F25B 6/04(2006.01) F25B 40/00(2006.01) (52) Cooperative Patent Classification (CPC): F25B 7/00; F25B 25/005; F25B 2339/047; F25B 2400/23; F25B 9/008; F25B 6/04; F25B 41/00; F25B 30/06; F25B 40/00; F25B 2341/0012; F25B 2700/1931; F25B 2700/1933; F25B 2700/21161; F25B 2700/21171 (86) International application number: PCT/IB2021/058132 (87) International publication number: WO 2022/049563 (10.03.2022 Gazette 2022/10)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 07.09.2020 IT 202000021097 (71) Applicant: Hiref S.p.A. 35020 Tribano (IT)	(72) Inventors: MANTOVAN, Mauro deceased (IT) POLETTO, Fabio 35020 Tribano (PD) (IT) TARABOTTI, Andrea 35020 Tribano (PD) (IT) (74) Representative: Studio Torta S.p.A.  Via Viotti, 9 10121 Torino 10121 Torino (IT)