(19)

(11)

EP 4 214 378 A2

(12)

(88) Date of publication A3: 28.04.2022 (43) Date of publication: 26.07.2023 Bulletin 2023/30 (21) Application number: 21794904.9 (22) Date of filing: 14.09.2021

(51) International Patent Classification (IPC):  E04G 1/06(2006.01) E04G 7/32(2006.01) E04G 7/28(2006.01) E04G 7/30(2006.01) E04G 7/14(2006.01) E04G 5/14(2006.01) (52) Cooperative Patent Classification (CPC): E04G 1/06; E04G 7/301; E04G 7/307; E04G 7/32; E04G 7/14; E04G 7/28; E04G 5/14 (86) International application number: PCT/GB2021/052376 (87) International publication number: WO 2022/058721 (24.03.2022 Gazette 2022/12)

(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: 15.09.2020 GB 202014474 (71) Applicant: Dunbar, Lee Wirral, Merseyside CH43 2JS (GB)	(72) Inventor: Dunbar, Lee Wirral, Merseyside CH43 2JS (GB) (74) Representative: Prichard, Leslie Stephen  Culverstons 20 Dawlish Road Wirral, Merseyside CH61 2XP Wirral, Merseyside CH61 2XP (GB)