(19)

(11)

EP 4 007 855 A1

(12)

(43) Date of publication: 08.06.2022 Bulletin 2022/23 (21) Application number: 20776254.3 (22) Date of filing: 02.08.2020

(51) International Patent Classification (IPC):  F04B 1/1136(2020.01) (52) Cooperative Patent Classification (CPC): F04B 1/1136 (86) International application number: PCT/SK2020/050009 (87) International publication number: WO 2021/025628 (11.02.2021 Gazette 2021/06)

(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: 02.08.2019 SK 500572019 (71) Applicant: Up-Steel, S.R.O. 914 43 Horné Srnie (SK)	(72) Inventors: URBAN, Lubos 914 21 Horné Srnie (SK) PAVLACKA, Ján Dubnica nad Váhom (SK) (74) Representative: Kubinyi, Peter  Piaristicka 9 911 01 Trencin 911 01 Trencin (SK)