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(11)

EP 4 065 913 A1

(12)

(43) Date of publication: 05.10.2022 Bulletin 2022/40 (21) Application number: 20824682.7 (22) Date of filing: 10.12.2020

(51) International Patent Classification (IPC):  F27B 3/08(2006.01) F27B 3/18(2006.01) F27B 3/10(2006.01) (52) Cooperative Patent Classification (CPC): F27B 3/085; F27B 3/183; F27B 3/10; F27B 3/18 (86) International application number: PCT/IB2020/061745 (87) International publication number: WO 2021/116969 (17.06.2021 Gazette 2021/24)

(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: 11.12.2019 IT 201900023667 (71) Applicant: DANIELI & C. OFFICINE MECCANICHE S.P.A. 33042 Buttrio (UD) (IT)	(72) Inventors: PRIMAVERA, Alessandra 33040 Faedis (UD) (IT) DELLA NEGRA, Angelico 33040 Povoletto (UD) (IT) MARCONI, Gianfranco 33100 Udine (UD) (IT) (74) Representative: Münchow, Vera Ute Barbara  C/o Adexe Srl Corso Porta Nuova, 131 37122 Verona (VR) 37122 Verona (VR) (IT)