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EP 4 313 443 A1

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(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 21715544.9 (22) Date of filing: 25.03.2021

(51) International Patent Classification (IPC):  B22D 1/00(2006.01) B22D 11/115(2006.01) B22D 11/103(2006.01) B22D 41/00(2006.01) (52) Cooperative Patent Classification (CPC): B22D 1/00; B22D 11/103; B22D 41/00; B22D 11/115; B22D 11/118 (86) International application number: PCT/EP2021/057678 (87) International publication number: WO 2022/199817 (29.09.2022 Gazette 2022/39)

(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 (71) Applicant: ABB SCHWEIZ AG 5400 Baden (CH)	(72) Inventors: YANG, Hongliang 72482 Västerås (SE) RYDHOLM, Bengt 72223 Västerås (SE) TENG, Lidong 72246 Västerås (SE) ZIELINSKA, Monika 33-111 Koszyce Wielkie (PL) (74) Representative: Zimmermann & Partner Patentanwälte mbB  Postfach 330 920 80069 München 80069 München (DE)