(19)

(11)

EP 4 256 154 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21827208.6 (22) Date of filing: 01.12.2021

(51) International Patent Classification (IPC):  E04G 21/32(2006.01) E04G 5/16(2006.01) E04G 7/26(2006.01) E04G 7/14(2006.01) E04G 25/00(2006.01) E04G 1/15(2006.01) E04G 1/12(2006.01) E04G 7/20(2006.01) E04G 5/02(2006.01) (52) Cooperative Patent Classification (CPC): E04G 21/3204; E04G 1/153; E04G 21/3261; E04G 1/152; E04G 5/16; E04G 2025/006; E04G 7/26; E04G 7/20; E04G 7/14; E04G 5/02 (86) International application number: PCT/GB2021/053132 (87) International publication number: WO 2022/118012 (09.06.2022 Gazette 2022/23)

(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: 01.12.2020 GB 202018914 (71) Applicant: J. Mac Safety Systems Limited Stockton-on-Tees, Durham TS18 2PH (GB)	(72) Inventor: MCCARTHY, Luis Durham TS18 2PH (GB) (74) Representative: Wilson Gunn  Blackfriars House The Parsonage 5th Floor Manchester M3 2JA Manchester M3 2JA (GB)