(19)

(11)

EP 1 794 391 A1

(12)

(43) Date of publication: 13.06.2007 Bulletin 2007/24 (21) Application number: 05771800.9 (22) Date of filing: 17.08.2005

(51) International Patent Classification (IPC):  E04H 3/28(2006.01) (86) International application number: PCT/GB2005/003227 (87) International publication number: WO 2006/027546 (16.03.2006 Gazette 2006/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 10.09.2004 GB 0420073 (71) Applicant: Michell, Andrew 16 Melville Road London SW13 9RJ (GB)	(72) Inventor: Michell, Andrew 16 Melville Road London SW13 9RJ (GB) (74) Representative: Chapman, Helga Claire  Chapman Molony Renshaw Barns Upper Woodford Salisbury Wiltshire SP4 6FA Salisbury Wiltshire SP4 6FA (GB)