(19)

(11)

EP 4 824 348 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24861374.7 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  E01B 2/00(2006.01) E01B 26/00(2006.01) E01B 19/00(2006.01) (52) Cooperative Patent Classification (CPC): E01B 2/00; E01B 19/00; E01B 26/00 (86) International application number: PCT/PL2024/050100 (87) International publication number: WO 2025/127949 (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: 12.12.2023 PL 44707123 (71) Applicant: POLITECHNIKA WARSZAWSKA 00-661 Warszawa (PL)	(72) Inventors: RATKIEWICZ, Andrzej 05-822 Milanówek (PL) KUKULSKI, Jacek 05-870 Blonie (PL) (74) Representative: Augustyniak, Magdalena Anna et al Polservice Kancelaria Rzecznikow Patentowych sp. z o.o. Bobrowiecka 8 00-728 Warszawa 00-728 Warszawa (PL)