(19)

(11)

EP 4 823 791 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24827939.0 (22) Date of filing: 13.12.2024

(51) International Patent Classification (IPC):  B23K 37/02(2006.01) B63B 75/00(2020.01) B21C 37/08(2006.01) B23P 15/00(2006.01) B23K 9/028(2006.01) B23K 26/242(2014.01) B23K 37/053(2025.01) F03D 13/25(2016.01) B23P 23/06(2006.01) B21D 51/04(2006.01) B23K 26/06(2014.01) B23K 26/282(2014.01) (52) Cooperative Patent Classification (CPC): B23P 23/06; B23P 15/00; B21D 51/04; E02B 2017/0091; B63B 35/003; B21D 5/01; B21D 5/12; B21D 5/10; B21D 17/02 (86) International application number: PCT/NL2024/050667 (87) International publication number: WO 2025/127929 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 13.12.2023 NL 2036515 (71) Applicant: Sif Holding N.V. 6041 TA Roermond (NL)	(72) Inventor: KURSTJENS, Michel Antoin Marie 6041 TA Roermond (NL) (74) Representative: V.O.  P.O. Box 87930 2508 DH Den Haag 2508 DH Den Haag (NL)