(19)

(11)

EP 1 552 072 A1

(12)

(43) Date of publication: 13.07.2005 Bulletin 2005/28 (21) Application number: 03755659.4 (22) Date of filing: 03.10.2003

(51) International Patent Classification (IPC)7: E04B 1/24 (86) International application number: PCT/GB2003/004270 (87) International publication number: WO 2004/033811 (22.04.2004 Gazette 2004/17)

(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: 11.10.2002 GB 0223631 (71) Applicant: Burnden Holdings (UK) Limited Bolton BL3 2RB (GB)	(72) Inventors: McLean, Iain,Burnden Works Bolton BL3 2RB (GB) Burton, Tim,Burnden Works Bolton BL3 2RB (GB) (74) Representative: Brandon, Paul Laurence et al APPLEYARD LEES,15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)