(19)

(11)

EP 4 022 130 A1

(12)

(43) Date of publication: 06.07.2022 Bulletin 2022/27 (21) Application number: 20799812.1 (22) Date of filing: 13.08.2020

(51) International Patent Classification (IPC):  E01C 13/02(2006.01) E01C 13/08(2006.01) (52) Cooperative Patent Classification (CPC): E01C 13/02; E01C 13/083 (86) International application number: PCT/HU2020/050038 (87) International publication number: WO 2021/038256 (04.03.2021 Gazette 2021/09)

(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 (30) Priority: 27.08.2019 HU 1900303 (71) Applicant: Pataki, Mihaly 6000 Kecskemet (HU)	(72) Inventor: Pataki, Mihaly 6000 Kecskemet (HU) (74) Representative: Farkas, Tamas  Danubia Patent & Law Office LLC P.O.B. 198 1368 Budapest 1368 Budapest (HU)