(19)

(11)

EP 4 824 384 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24820602.1 (22) Date of filing: 03.12.2024

(51) International Patent Classification (IPC):  E21B 7/02(2006.01) B62D 11/00(2006.01) E21B 44/00(2006.01) G05D 1/00(2024.01) (52) Cooperative Patent Classification (CPC): E21B 7/02; E21B 44/00; B62D 11/003; G05D 2107/90; G05D 2105/05; G05D 2109/10; G05D 1/43 (86) International application number: PCT/EP2024/084475 (87) International publication number: WO 2025/124994 (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: 14.12.2023 US 202318539392 (71) Applicant: SANDVIK MINING AND CONSTRUCTION OY 33330 Tampere (FI)	(72) Inventors: PELTOMAA, Toni 33311 Tampere (FI) SAHLMAN, Mika 33311 Tampere (FI) (74) Representative: Sandvik  Sandvik Mining and Construction Oy Patent Department PL 100 33311 Tampere 33311 Tampere (FI)