(19)

(11)

EP 4 423 432 A1

(12)

(43) Date of publication: 04.09.2024 Bulletin 2024/36 (21) Application number: 22817300.1 (22) Date of filing: 28.10.2022

(51) International Patent Classification (IPC):  F24B 1/02(2006.01) F24B 13/00(2006.01) F24B 1/195(2006.01) (52) Cooperative Patent Classification (CPC): F24B 1/02; F24B 1/1957; F24B 13/004 (86) International application number: PCT/GB2022/052744 (87) International publication number: WO 2023/073378 (04.05.2023 Gazette 2023/18)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 28.10.2021 GB 202115508 (71) Applicant: Hestia Concepts Ltd Canterbury, Kent CT4 6JB (GB)	(72) Inventor: THOMAS, Samuel Haydn Andrew Canterbury Kent CT4 6JB (GB) (74) Representative: Fry, David John  Agile IP LLP Airport House Purley Way Croydon, Greater London CR0 0XZ Croydon, Greater London CR0 0XZ (GB)