(19)

(11)

EP 3 935 240 A1

(12)

(43) Date of publication: 12.01.2022 Bulletin 2022/02 (21) Application number: 20711259.0 (22) Date of filing: 05.03.2020

(51) International Patent Classification (IPC):  E04H 1/12(2006.01) E04H 1/14(2006.01) E04B 1/343(2006.01) (52) Cooperative Patent Classification (CPC): E04H 1/125; E04B 1/8218; E04H 1/14 (86) International application number: PCT/GB2020/050520 (87) International publication number: WO 2020/178587 (10.09.2020 Gazette 2020/37)

(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: 06.03.2019 GB 201903025 (71) Applicant: Trieste Group One Ltd Hemel Hempstead, Hertfordshire HP2 7UB (GB)	(72) Inventor: PHILLIPS, Roger Hertfordshire HP2 7UB (GB) (74) Representative: Dolleymores  9 Rickmansworth Road Watford, Hertfordshire WD18 0JU Watford, Hertfordshire WD18 0JU (GB)