(19)

(11)

EP 4 356 036 A1

(12)

(43) Date of publication: 24.04.2024 Bulletin 2024/17 (21) Application number: 22737507.8 (22) Date of filing: 08.07.2022

(51) International Patent Classification (IPC):  F16L 33/025(2006.01) F16L 33/207(2006.01) (52) Cooperative Patent Classification (CPC): F16L 33/025; F16L 33/2075; F16L 2201/10 (86) International application number: PCT/EP2022/069167 (87) International publication number: WO 2023/281093 (12.01.2023 Gazette 2023/02)

(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: 08.07.2021 LU 500410 (71) Applicant: Aliaxis Research & Technology 78990 Élancourt (FR)	(72) Inventors: ADELMAND, Hemin 78990 Élancourt (FR) TEIXEIRA PINTO, José 78990 Élancourt (FR) COMTE, Dominique 78990 Élancourt (FR) (74) Representative: Sonnenberg Harrison Partners  48, rue Saint-Honoré 75001 Paris 75001 Paris (FR)