(19)

(11)

EP 4 771 335 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24765115.1 (22) Date of filing: 30.08.2024

(51) International Patent Classification (IPC):  G01B 5/00(2006.01) G01B 11/04(2006.01) B23Q 17/22(2006.01) (52) Cooperative Patent Classification (CPC): G01B 11/04; G01B 5/0009; G01B 21/047; B23Q 17/2233 (86) International application number: PCT/EP2024/074315 (87) International publication number: WO 2025/046085 (06.03.2025 Gazette 2025/10)

(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: 31.08.2023 FI 20235972 (71) Applicant: Rockroth Oy 04150 Martinkylä (FI)	(72) Inventor: STENROTH, Andreas 04150 MARTINKYLÄ (FI) (74) Representative: Heinonen & Co  Attorneys-at-Law Ltd P.O.Box 671 00101 Helsinki 00101 Helsinki (FI)