(19)

(11)

EP 1 049 841 A1

(12)

(43) Date of publication: 08.11.2000 Bulletin 2000/45 (21) Application number: 99956201.0 (22) Date of filing: 24.11.1999

(51) International Patent Classification (IPC)7: E04H 17/26 (86) International application number: PCT/GB9903/911 (87) International publication number: WO 0031/364 (02.06.2000 Gazette 2000/22)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 24.11.1998 GB 9825600 (71) Applicant: Hooper Industries Limited Wythall,NR Birmingham B47 6AJ (GB)	(72) Inventors: HOOPER, Stuart, George Wthall,NR Birmingham B47 6AJ (GB) STANLEY, Michael Trevor Wythall,NR Birmingham B47 6AJ (GB) (74) Representative: Adkins, Michael et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)