(19)

(11)

EP 2 707 554 A1

(12)

(43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 12713261.1 (22) Date of filing: 09.03.2012

(51) International Patent Classification (IPC):  E04C 2/04(2006.01) E04C 2/288(2006.01) E04B 2/84(2006.01) E04C 2/06(2006.01) E04C 5/06(2006.01) (86) International application number: PCT/GB2012/050528 (87) International publication number: WO 2012/120310 (13.09.2012 Gazette 2012/37)

(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 (30) Priority: 10.03.2011 GB 201104061 (71) Applicant: Holt, John Christopher Swindon, Wiltshire SN2 2PB (GB)	(72) Inventor: Holt, John Christopher Swindon, Wiltshire SN2 2PB (GB) (74) Representative: Hocking, Adrian Niall et al Albright Patents LLP Eagle Tower Montpellier Drive Cheltenham Gloucestershire GL50 1TA Cheltenham Gloucestershire GL50 1TA (GB)