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(11)

EP 3 880 927 A1

(12)

(43) Date of publication: 22.09.2021 Bulletin 2021/38 (21) Application number: 19816844.5 (22) Date of filing: 13.11.2019

(51) International Patent Classification (IPC):  E06B 3/32(2006.01) E06B 1/52(2006.01) E04H 1/12(2006.01) E05B 65/06(2006.01) E06B 3/36(2006.01) E06B 3/70(2006.01) E05B 63/24(2006.01) (52) Cooperative Patent Classification (CPC): E04H 1/1266; E05B 65/06; E05B 63/0069; E06B 1/526; E06B 3/325; E05B 65/10; E06B 2003/7055 (86) International application number: PCT/GB2019/053223 (87) International publication number: WO 2020/099873 (22.05.2020 Gazette 2020/21)

(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: 13.11.2018 GB 201818506 (71) Applicant: RSBP Ltd Newstead Industrial Estate Trentham Stoke On Trent ST4 8HX (GB)	(72) Inventor: REES, Martin Trentham Stoke on Trent ST4 8HX (GB) (74) Representative: Scintilla Intellectual Property Ltd  The Centrum Building 38 Queen Street Glasgow G1 3DX Glasgow G1 3DX (GB)