(19)

(11)

EP 3 079 964 A1

(12)

(43) Date of publication: 19.10.2016 Bulletin 2016/42 (21) Application number: 14869354.2 (22) Date of filing: 11.12.2014

(51) International Patent Classification (IPC):  B61F 5/52(2006.01) B61F 3/02(2006.01) (86) International application number: PCT/FI2014/050984 (87) International publication number: WO 2015/086907 (18.06.2015 Gazette 2015/24)

(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 (30) Priority: 11.12.2013 FI 20136244 (71) Applicant: Helsingin Kaupungin liikennelaitos -liikelaitos 00099 Helsingin kaupunki (FI)	(72) Inventor: HEIKKILÄ, Ollipekka FI-00099 Helsigin kaupunki (FI) (74) Representative: Kolster Oy Ab  Iso Roobertinkatu 23 PO Box 148 00121 Helsinki 00121 Helsinki (FI)