(19)

(11)

EP 4 025 474 A1

(12)

(43) Date of publication: 13.07.2022 Bulletin 2022/28 (21) Application number: 20764416.2 (22) Date of filing: 04.09.2020

(51) International Patent Classification (IPC):  B61L 15/00(2006.01) B61L 25/02(2006.01) (52) Cooperative Patent Classification (CPC): B61L 15/0081; B61L 15/0027; B61L 25/028 (86) International application number: PCT/EP2020/074763 (87) International publication number: WO 2021/043977 (11.03.2021 Gazette 2021/10)

(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: 04.09.2019 EP 19195436 (71) Applicant: Ovinto cvba 9880 Aalter (BE)	(72) Inventor: RONSE, Frederick 8300 Knokke-Heist (BE) (74) Representative: Brantsandpatents bvba  Pauline Van Pottelsberghelaan 24 9051 Ghent 9051 Ghent (BE)