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(11)

EP 3 866 978 A1

(12)

(43) Date of publication: 25.08.2021 Bulletin 2021/34 (21) Application number: 19748645.9 (22) Date of filing: 13.06.2019

(51) International Patent Classification (IPC):  B02C 4/02(2006.01) B02C 4/28(2006.01) B02C 4/32(2006.01) B02C 4/42(2006.01) B02C 4/30(2006.01) (86) International application number: PCT/CZ2019/000027 (87) International publication number: WO 2020/007382 (09.01.2020 Gazette 2020/02)

(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: 05.07.2018 CZ 20180336 (71) Applicant: PSP Engineering A.S. 750 02 Prerov (CZ)	(72) Inventors: KOSINA, Ivan Brodek u Prerova (CZ) PAVLÍK, Jan 751 31 Lipník nad Becvou (CZ) BURGET, Michal 779 00 Olomouc (CZ) (74) Representative: Halaxová, Eva  TETRAPAT Halaxová & Halaxová Ztracená 8 772 00 Olomouc 772 00 Olomouc (CZ)