(19)

(11)

EP 4 237 718 A1

(12)

(43) Date of publication: 06.09.2023 Bulletin 2023/36 (21) Application number: 21887278.6 (22) Date of filing: 25.10.2021

(51) International Patent Classification (IPC):  F16K 31/12(2006.01) F16K 31/122(2006.01) F16K 37/00(2006.01) F16K 31/00(2006.01) F16K 31/126(2006.01) (52) Cooperative Patent Classification (CPC): F16K 37/0041; F16K 37/0025; F16K 37/0033; F16K 3/0254; F16K 27/044; F16K 27/12; F16K 27/07; B61D 7/26; B61D 7/02; B61D 7/32 (86) International application number: PCT/US2021/056508 (87) International publication number: WO 2022/093720 (05.05.2022 Gazette 2022/18)

(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: 02.11.2020 US 202063108717 P (71) Applicant: Amsted Rail Company, Inc. Chicago, IL 60606 (US)	(72) Inventors: LIDGETT, Justin M. Forney, Texas 75126 (US) MARTIN, Andrew H. Chester, Pennsylvania 19380 (US) TAILLON, Armand P. Barrington, Illinois 60010 (US) WEINER, Evan Chicago, IL 60606 (US) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)