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(11)

EP 4 473 175 A1

(12)

(43) Date of publication: 11.12.2024 Bulletin 2024/50 (21) Application number: 23707271.5 (22) Date of filing: 06.02.2023

(51) International Patent Classification (IPC):  E04H 17/00(2006.01) E01F 13/02(2006.01) E04H 17/18(2006.01) (52) Cooperative Patent Classification (CPC): E04H 17/009; E04H 17/18; E01F 13/02 (86) International application number: PCT/EP2023/052879 (87) International publication number: WO 2023/148387 (10.08.2023 Gazette 2023/32)

(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: 04.02.2022 GB 202201487 17.08.2022 US 202217890169 31.08.2022 US 202217900154 15.12.2022 GB 202218928 (71) Applicant: SHPB Ltd Coventry, Warwickshire CV8 3ES (GB)

(72) Inventor: HAWTHORNTHWAITE, Steven Coventry Warwickshire CV8 3ES (GB) (74) Representative: Sanger, Phillip Simon  GWIP Ltd Highdown House 11 Highdown Road Leamington Spa Warwickshire, CV31 1XT Warwickshire, CV31 1XT (GB)