(19)

(11)

EP 4 515 057 A1

(12)

(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23728851.9 (22) Date of filing: 24.05.2023

(51) International Patent Classification (IPC):  E04G 21/32(2006.01) E04D 15/00(2006.01) (52) Cooperative Patent Classification (CPC): E04G 21/328; E04D 15/00; E04D 15/02 (86) International application number: PCT/GB2023/051351 (87) International publication number: WO 2023/237850 (14.12.2023 Gazette 2023/50)

(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: 08.06.2022 GB 202208362 (71) Applicant: Creber, John Lawrence Bradford, Yorkshire BD13 1PX (GB)	(72) Inventor: Creber, John Lawrence Bradford, Yorkshire BD13 1PX (GB) (74) Representative: Tomkinson, Alexandra  Bailey Walsh & Co LLP 1 York Place Leeds, LS1 2DR Leeds, LS1 2DR (GB)