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(11)

EP 3 911 905 A1

(12)

(43) Date of publication: 24.11.2021 Bulletin 2021/47 (21) Application number: 20708217.3 (22) Date of filing: 10.01.2020

(51) International Patent Classification (IPC):  F27B 14/04(2006.01) F27D 1/00(2006.01) F27B 5/16(2006.01) F27B 14/06(2006.01) F27B 5/14(2006.01) (52) Cooperative Patent Classification (CPC): F27D 1/0009; F27D 11/02; F27B 5/14; F27B 5/16 (86) International application number: PCT/PL2020/000001 (87) International publication number: WO 2020/149751 (23.07.2020 Gazette 2020/30)

(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: 15.01.2019 PL 42859019 (71) Applicant: Seco/Warwick S.A. 66-200 Swiebodzin (PL)	(72) Inventors: FUJAK, Wieslaw 66-210 Zbaszynek (PL) OSINSKI, Radoslaw 65-140 Zielona Góra (PL) PIECHOWICZ, Lukasz 66-200 Swiebodzin (PL) OLEJNIK, Józef 66-200 Swiebodzin (PL) KORECKI, Maciej 66-200 Swiebodzin (PL) (74) Representative: Gornicki, Pawel  Biuro Ochrony Wlasnosci Intelektualnej Patent-Service Ul. Rybojadzka 16 60-443 Poznan 60-443 Poznan (PL)