(19)

(11)

EP 4 824 332 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24827912.7 (22) Date of filing: 09.12.2024

(51) International Patent Classification (IPC):  D03D 1/00(2006.01) D03D 15/533(2021.01) (52) Cooperative Patent Classification (CPC): D03D 1/0088; D03D 15/533; D10B 2401/16; D10B 2401/18; D10B 2403/02431 (86) International application number: PCT/IB2024/062379 (87) International publication number: WO 2025/126015 (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: 11.12.2023 IT 202300026316 (71) Applicant: Jakob Müller AG Frick 5070 Frick (CH)	(72) Inventor: ENGESSER, Bernhard 5070 Frick (CH) (74) Representative: Tansini, Elio Fabrizio  Bugnion S.p.A. Viale Lancetti 17 20158 Milano 20158 Milano (IT)