(19)

(11)

EP 4 377 041 A1

(12)

(43) Date of publication: 05.06.2024 Bulletin 2024/23 (21) Application number: 22748097.7 (22) Date of filing: 25.07.2022

(51) International Patent Classification (IPC):  B23K 20/12(2006.01) B23K 37/02(2006.01) B23K 37/053(2006.01) B23K 101/06(2006.01) (52) Cooperative Patent Classification (CPC): B23K 20/1245; B23K 20/129; B23K 2101/06; B23K 37/0531; B23K 37/0536 (86) International application number: PCT/IB2022/056832 (87) International publication number: WO 2023/007343 (02.02.2023 Gazette 2023/05)

(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: 29.07.2021 IT 202100020342 (71) Applicant: Esatechnologies AG 4600 Olten (SO) (CH)	(72) Inventors: BRACHER, Roger 4600 Olten (SO) (CH) SCHAFER, Jean Louis 4600 Olten (SO) (CH) (74) Representative: Burchielli, Riccardo et al Barzano & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)