(19)

(11)

EP 4 157 781 A2

(12)

(88) Date of publication A3: 02.12.2021 (43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 21800794.6 (22) Date of filing: 10.05.2021

(51) International Patent Classification (IPC):  B66C 13/00(2006.01) (52) Cooperative Patent Classification (CPC): B66C 19/02; B66C 5/06; E21D 11/00 (86) International application number: PCT/TR2021/050450 (87) International publication number: WO 2021/225557 (11.11.2021 Gazette 2021/45)

(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: 08.05.2020 TR 202007246 (71) Applicant: Yapiray Demiryolu Insaat Sistemleri Sanayi Ve Ticaret Anonim Sirketi Üsküdar/Istanbul (TR)	(72) Inventor: KOÇ, Enver Üsküdar/ stanbul (TR) (74) Representative: Yamankaradeniz, Kemal  Destek Patent Inc. Maslak Mah., Büyükdere Cad., No: 243, Kat: 13, Spine Tower, Sariyer, 34485 Istanbul 34485 Istanbul (TR)