(19)

(11)

EP 3 829 405 A1

(12)

(43) Date of publication: 09.06.2021 Bulletin 2021/23 (21) Application number: 19749164.0 (22) Date of filing: 02.08.2019

(51) International Patent Classification (IPC):  A47L 5/22(2006.01) A47L 5/30(2006.01) A47L 5/26(2006.01) A47L 9/32(2006.01) (86) International application number: PCT/EP2019/070944 (87) International publication number: WO 2020/025819 (06.02.2020 Gazette 2020/06)

(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: 02.08.2018 GB 201812610 (71) Applicant: Grey Technology Limited Warndon, Worcester WR4 9FB (GB)	(72) Inventors: GREY, Nicholas Gerald Warndon, Worcester WR4 9FB (GB) JONES, Jonathan Warndon, Worcester WR4 9FB (GB) (74) Representative: Gee, Steven William  Fairfield IP Limited 1 South Lynn Gardens London Road Shipston on Stour, Warwickshire CV36 4ER Shipston on Stour, Warwickshire CV36 4ER (GB)