(19)

(11)

EP 4 258 968 A1

(12)

(43) Date of publication: 18.10.2023 Bulletin 2023/42 (21) Application number: 21902770.3 (22) Date of filing: 08.12.2021

(51) International Patent Classification (IPC):  A47L 13/24(2006.01) A47L 13/252(2006.01) A47L 13/256(2006.01) A47L 13/25(2006.01) A47L 13/255(2006.01) A47L 13/46(2006.01) (52) Cooperative Patent Classification (CPC): A47L 13/24; A47L 13/46; A47L 13/255; A47L 25/005; A47L 13/17 (86) International application number: PCT/FI2021/050855 (87) International publication number: WO 2022/123118 (16.06.2022 Gazette 2022/24)

(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 Designated Validation States: KH MA MD TN (30) Priority: 09.12.2020 FI 20206269 (71) Applicant: Pirkanmaan Raikas Linja Oy 33250 Tampere (FI)	(72) Inventor: EEROLA, Kristian 33250 TAMPERE (FI) (74) Representative: Koivisto, Harri Kristian  Koivisto Patentit Oy Pyhäjärvenkatu 5 B 406 33200 Tampere 33200 Tampere (FI)