(19)

(11)

EP 4 007 872 A1

(12)

(43) Date of publication: 08.06.2022 Bulletin 2022/23 (21) Application number: 19780323.2 (22) Date of filing: 27.09.2019

(51) International Patent Classification (IPC):  F24S 10/40(2018.01) F24S 30/452(2018.01) F24S 30/00(2018.01) F24S 23/30(2018.01) F24S 40/80(2018.01) F24S 80/00(2018.01) (52) Cooperative Patent Classification (CPC): F24S 23/30; F24S 23/31; F24S 10/45; F24S 2030/115; F24S 40/85; F24S 30/455; F24S 60/30; F24S 2030/132; F24S 2030/16; F24S 20/50; F24S 2020/23; Y02E 10/44; Y02E 10/47; Y02P 90/50 (86) International application number: PCT/GB2019/052749 (87) International publication number: WO 2021/019198 (04.02.2021 Gazette 2021/05)

(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: 01.08.2019 GB 201910997 (71) Applicant: Larkfleet Limited Bourne, Lincolnshire PE10 0FF (GB)	(72) Inventors: SQUIRE, John Nottinghamshire NG23 7HD (GB) HICK, Karl Lincolnshire PE10 0FF (GB) (74) Representative: Morris, Jonathan Paul  Murgitroyd & Company Milton Keynes Studio H1B 297 Upper Fourth Street Witan Studios Milton Keynes MK9 1EH Milton Keynes MK9 1EH (GB)