(19)

(11)

EP 3 397 913 A1

(12)

(43) Date of publication: 07.11.2018 Bulletin 2018/45 (21) Application number: 16831590.1 (22) Date of filing: 22.12.2016

(51) International Patent Classification (IPC):  F28D 7/10(2006.01) F28D 7/02(2006.01) (86) International application number: PCT/PL2016/000154 (87) International publication number: WO 2017/116251 (06.07.2017 Gazette 2017/27)

(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: MA MD (30) Priority: 31.12.2015 PL 41568415 (71) Applicant: AIC S.A. 81-577 Gydnia (PL)	(72) Inventor: SZCZEPANSKI, Krzysztof 83-110 Tczew (PL) (74) Representative: Kwapich, Anna  Kancelaria Patentowa Ul. Marusarzowny 4/69 80-288 Gdansk 80-288 Gdansk (PL)