(19)

(11)

EP 4 221 911 A1

(12)

(43) Date of publication: 09.08.2023 Bulletin 2023/32 (21) Application number: 21799168.6 (22) Date of filing: 08.09.2021

(51) International Patent Classification (IPC):  B21J 3/00(2006.01) B21J 9/02(2006.01) B21K 29/00(2006.01) B21D 37/18(2006.01) B30B 15/00(2006.01) (52) Cooperative Patent Classification (CPC): B21J 3/00; B21J 9/02; B30B 15/0088; B21K 29/00 (86) International application number: PCT/CZ2021/000042 (87) International publication number: WO 2022/053086 (17.03.2022 Gazette 2022/11)

(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: 08.09.2020 CZ 20200499 (71) Applicant: Skoda Auto A.S. 293 01 Mladá Boleslav (CZ)	(72) Inventor: GRÁF, Gustav 29301 Mlada Boleslav (CZ)