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EP 4 314 647 A1

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(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22720518.4 (22) Date of filing: 30.03.2022

(51) International Patent Classification (IPC):  F23B 10/02(2011.01) F23B 90/06(2011.01) F23C 9/00(2006.01) F23N 5/00(2006.01) F23B 50/06(2006.01) F23C 6/04(2006.01) F23G 5/027(2006.01) (52) Cooperative Patent Classification (CPC): F23B 10/02; F23B 50/06; F23B 90/06; F23C 6/04; F23C 9/00; F23C 2202/50; F23G 5/0276; F23G 2201/40; F23G 2206/10; F23G 2209/26; F23G 2900/00001; F23G 2900/50002; F23N 5/006 (86) International application number: PCT/IT2022/050078 (87) International publication number: WO 2022/208566 (06.10.2022 Gazette 2022/40)

(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: 30.03.2021 IT 202100007769 (71) Applicant: PALAZZETTI LELIO SPA I-33080 Porcia (PN) (IT)	(72) Inventors: DE PICCOLI, Matteo 33078 San Vito al Tagliamento (IT) COLAUTTI, Michele 33097 Spilimbergo (IT) (74) Representative: Petraz, Gilberto Luigi et al GLP S.r.l. Viale Europa Unita, 17133100 Udine Viale Europa Unita, 17133100 Udine (IT)