(19)

(11)

EP 4 824 356 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24905012.1 (22) Date of filing: 13.12.2024

(51) International Patent Classification (IPC):  E02F 9/28(2006.01) E21C 27/30(2006.01) E02F 3/40(2006.01) F16B 1/00(2006.01) (52) Cooperative Patent Classification (CPC): E02F 9/2833; E02F 9/2858; E02F 9/2883; E02F 3/413; E02F 9/2866 (86) International application number: PCT/US2024/060161 (87) International publication number: WO 2025/129092 (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 US 202363609744 P (71) Applicant: Joy Global Surface Mining Inc Milwaukee, Wisconsin 53204 (US)	(72) Inventor: RESTUM, David Oak Creek, Wisconsin 53154 (US) (74) Representative: Appleyard Lees IP LLP  G Mill Dean Clough Industrial Park Halifax HX3 5AH Halifax HX3 5AH (GB)