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(11)

EP 4 522 339 A1

(12)

(43) Date of publication: 19.03.2025 Bulletin 2025/12 (21) Application number: 22728259.7 (22) Date of filing: 12.05.2022

(51) International Patent Classification (IPC):  B03B 5/52(2006.01) B08B 3/14(2006.01) B27N 3/18(2006.01) B27N 3/04(2006.01) B27N 1/02(2006.01) B08B 3/10(2006.01) B27N 1/00(2006.01) B27N 3/02(2006.01) B27N 3/00(2006.01) (52) Cooperative Patent Classification (CPC): B27N 1/00; B27N 3/18; B27N 3/02; B27N 3/04; B27N 3/007; B27N 3/14; B27N 1/029 (86) International application number: PCT/EP2022/062955 (87) International publication number: WO 2023/217378 (16.11.2023 Gazette 2023/46)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: DIEFFENBACHER GMBH MASCHINEN- UND ANLAGENBAU 75031 Eppingen (DE)	(72) Inventor: VON HAAS, Gernot 75031 Eppingen (DE) (74) Representative: Hartdegen, Helmut  Angerfeldstraße 12a 82205 Gilching 82205 Gilching (DE)