(19)

(11)

EP 1 943 396 A1

(12)

(43) Date of publication: 16.07.2008 Bulletin 2008/29 (21) Application number: 06779482.6 (22) Date of filing: 20.09.2006

(51) International Patent Classification (IPC):  E04C 2/38(2006.01) (86) International application number: PCT/GB2006/003474 (87) International publication number: WO 2007/042748 (19.04.2007 Gazette 2007/16)

(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: 08.10.2005 GB 0520482 (71) Applicant: Henley Technology Ltd. Isle of Man IM1 1JA (GB)	(72) Inventor: WINDOW, John Leicestershire LE16 7EU (GB) (74) Representative: Marshall, John Grahame  Serjeants 25 The Crescent, King Street Leicester LE1 6RX Leicester LE1 6RX (GB)