(19)

(11)

EP 3 966 381 A1

(12)

(43) Date of publication: 16.03.2022 Bulletin 2022/11 (21) Application number: 19726923.6 (22) Date of filing: 08.05.2019

(51) International Patent Classification (IPC):  D06B 11/00(2006.01) B24B 31/14(2006.01) (52) Cooperative Patent Classification (CPC): D06B 11/0096 (86) International application number: PCT/EP2019/061843 (87) International publication number: WO 2020/224776 (12.11.2020 Gazette 2020/46)

(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: Dogan, Nurettin Vedat 71065 Sindelfingen (DE)	(72) Inventor: Dogan, Nurettin Vedat 71065 Sindelfingen (DE) (74) Representative: Witte, Weller & Partner Patentanwälte mbB  Postfach 10 54 62 70047 Stuttgart 70047 Stuttgart (DE)