(19)

(11)

EP 1 497 514 A1

(12)

(43) Date of publication: 19.01.2005 Bulletin 2005/03 (21) Application number: 03720730.5 (22) Date of filing: 25.04.2003

(51) International Patent Classification (IPC)7: E04H 1/00, E04H 1/02 (86) International application number: PCT/GB2003/001762 (87) International publication number: WO 2003/091513 (06.11.2003 Gazette 2003/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 25.04.2002 GB 0209506 (71) Applicants: Clamp, John Hubert Plymouth PL4 7NQ (GB) Horseman, Brian John Teignmouth TQ14 9SZ (GB)	(72) Inventors: Clamp, John Hubert Plymouth PL4 7NQ (GB) Horseman, Brian John Teignmouth TQ14 9SZ (GB) (74) Representative: Harrison, Ivor Stanley et al Withers & RogersGoldings House2 Hays Lane London SE1 2HW London SE1 2HW (GB)