(19)

(11)

EP 4 522 826 A1

(12)

(43) Date of publication: 19.03.2025 Bulletin 2025/12 (21) Application number: 23728620.8 (22) Date of filing: 11.05.2023

(51) International Patent Classification (IPC):  E04F 15/02(2006.01) E04F 15/024(2006.01) (52) Cooperative Patent Classification (CPC): E04F 2015/02094; E04F 15/02044; E04F 15/0247; E04F 15/02452; E04F 2201/043; E04F 2201/0517 (86) International application number: PCT/EP2023/062604 (87) International publication number: WO 2023/217962 (16.11.2023 Gazette 2023/46)

(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: 11.05.2022 GB 202206904 26.09.2022 GB 202214004 (71) Applicant: Ryno Ltd. Cranleigh Surrey GU6 8NQ (GB)	(72) Inventors: DOUGLAS, Andrew Aberdeen AB22 9AB (GB) WHITE, Caleb Ellon AB41 8NQ (GB) (74) Representative: Sanger, Phillip Simon  GWIP Ltd t/a Grey Wolf IP 1 Mill Street Leamington Spa, Warwickshire CV31 1ES Leamington Spa, Warwickshire CV31 1ES (GB)