(19)

(11)

EP 2 379 819 A2

(12)

(88) Date of publication A3: 14.04.2011 (43) Date of publication: 26.10.2011 Bulletin 2011/43 (21) Application number: 09803888.8 (22) Date of filing: 18.12.2009

(51) International Patent Classification (IPC):  E04B 1/80(2006.01) E04C 2/292(2006.01) (86) International application number: PCT/GB2009/051745 (87) International publication number: WO 2010/070358 (24.06.2010 Gazette 2010/25)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 18.12.2008 GB 0822997 (71) Applicant: Best, Frederick George Port Talbot SA12 8TT (GB)	(72) Inventor: Best, Frederick George Port Talbot SA12 8TT (GB) (74) Representative: Powell, Timothy John  Potter Clarkson LLP Park View House 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)