(19)

(11)

EP 3 906 386 A1

(12)

(43) Date of publication: 10.11.2021 Bulletin 2021/45 (21) Application number: 19748981.8 (22) Date of filing: 28.06.2019

(51) International Patent Classification (IPC):  F28F 3/00(2006.01) F28F 3/10(2006.01) F28F 3/08(2006.01) (52) Cooperative Patent Classification (CPC): F28F 3/083; F28F 3/10; F28F 3/005 (86) International application number: PCT/PL2019/000049 (87) International publication number: WO 2020/141983 (09.07.2020 Gazette 2020/28)

(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: 04.01.2019 PL 12794619 U (71) Applicant: Secespol Spólka Zo.o 82-100 Nowy Dwór Gdanski (PL)	(72) Inventors: SIEMIENCZUK, Bartlomiej 80-516 Gdansk (PL) MICIAK, Wojciech 82-300 Elblag (PL) (74) Representative: Czub, Krzysztof  Kancelaria Prawa Wlasnosci Przemyslowej i Prawa Autoskiego Teresa Czub & Krzysztof Czub Rzecznicy Patentowi Spólka Partnerska PO Box 12 80-700 Gdansk 2 80-700 Gdansk 2 (PL)