(19)

(11)

EP 0 929 726 A1

(12)

(43) Date of publication: 21.07.1999 Bulletin 1999/29 (21) Application number: 97944025.0 (22) Date of filing: 06.10.1997

(51) International Patent Classification (IPC):  E04B 1/ 348( . ) E04H 3/ 02( . ) (86) International application number: PCT/GB1997/002742 (87) International publication number: WO 1998/015695 (16.04.1998 Gazette 1998/15)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 04.10.1996 GB 19960020758 02.05.1997 GB 19970009066 (71) Applicant: Hamstead Securities Limited London W11 4QR (GB)	(72) Inventors: DOWNIE, Donald, Milne London W11 4QR (GB) WOOD, Martin, Nicholas Buckinghamshire HP23 6NQ (GB) (74) Representative: Shaw, Laurence, et al  5th Floor, Metropolitan House, 1 Hagley Road, Edgbaston Birmingham B16 8TG Birmingham B16 8TG (GB)