(19)

(11)

EP 4 058 338 A1

(12)

(43) Date of publication: 21.09.2022 Bulletin 2022/38 (21) Application number: 20804544.3 (22) Date of filing: 11.11.2020

(51) International Patent Classification (IPC):  B61L 27/00(2022.01) (52) Cooperative Patent Classification (CPC): B61L 27/53; B61L 27/57; B61L 27/40 (86) International application number: PCT/EP2020/081802 (87) International publication number: WO 2021/094401 (20.05.2021 Gazette 2021/20)

(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: 15.11.2019 CH 14482019 (71) Applicant: Schweizerische Bundesbahnen SBB 3000 Bern 65 (CH)	(72) Inventors: GEHRIG, Urs 4054 Basel (CH) GASSNER, Sonja 5400 Baden (CH) (74) Representative: Rentsch Partner AG  Kirchenweg 8 Postfach 8034 Zürich 8034 Zürich (CH)