(19)

(11)

EP 3 724 548 A1

(12)

(43) Date of publication: 21.10.2020 Bulletin 2020/43 (21) Application number: 18799733.3 (22) Date of filing: 06.11.2018

(51) International Patent Classification (IPC):  F17C 13/00(2006.01) (86) International application number: PCT/EP2018/080302 (87) International publication number: WO 2019/115094 (20.06.2019 Gazette 2019/25)

(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: 15.12.2017 LU 100578 (71) Applicant: Luxembourg Patent Company S.A. 7440 Lintgen (LU)	(72) Inventor: SCHMITZ, Philippe 7303 Steinsel (LU) (74) Representative: Lecomte & Partners  76-78, rue de Merl 2146 Luxembourg 2146 Luxembourg (LU)