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(11)

EP 3 887 073 A1

(12)

(43) Date of publication: 06.10.2021 Bulletin 2021/40 (21) Application number: 19797293.8 (22) Date of filing: 06.11.2019

(51) International Patent Classification (IPC):  B21D 26/08(2006.01) B21D 26/10(2006.01) B21D 26/053(2011.01) B21D 53/92(2006.01) B21D 26/12(2006.01) C22C 21/06(2006.01) B21D 26/06(2006.01) (52) Cooperative Patent Classification (CPC): B21D 26/06; B21D 26/053; C22C 21/06; B21D 53/92; C22F 1/047 (86) International application number: PCT/EP2019/080345 (87) International publication number: WO 2020/108932 (04.06.2020 Gazette 2020/23)

(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: 26.11.2018 EP 18208368 (71) Applicant: Airbus SAS 31700 Blagnac (FR)	(72) Inventors: BÜRGER, Achim 56070 Koblenz (DE) MEYER, Philippe 56070 Koblenz (DE) BACH, Andreas Harald 56070 Koblenz (DE) RUMPF, Philipp Daniel 56070 Koblenz (DE) SPANGEL, Sabine Maria 56070 Koblenz (DE) (74) Representative: Cabinet Le Guen Maillet  3, impasse de la Vigie CS 71840 35418 Saint-Malo Cedex 35418 Saint-Malo Cedex (FR)