(19)

(11)

EP 2 625 350 A2

(12)

(88) Date of publication A3: 07.06.2012 (43) Date of publication: 14.08.2013 Bulletin 2013/33 (21) Application number: 11782190.0 (22) Date of filing: 05.10.2011

(51) International Patent Classification (IPC):  E04G 5/14(2006.01) (86) International application number: PCT/GB2011/051896 (87) International publication number: WO 2012/046049 (12.04.2012 Gazette 2012/15)

(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 (30) Priority: 06.10.2010 GB 201016793 (71) Applicant: Advanced Guard Limited Otley, Leeds LS21 3BB (GB)	(72) Inventor: BOWMAN, Mark Edward Harrogate Yorkshire HG3 1SU (GB) (74) Representative: Mohun, Stephen John  Mohun Intellectual Property Ltd. 13/14 Park Place Leeds LS1 2SJ Leeds LS1 2SJ (GB)