(19)

(11)

EP 0 406 270 A1

(12)

(43) Date of publication: 09.01.1991 Bulletin 1991/02 (21) Application number: 89903503.0 (22) Date of filing: 03.03.1989

(51) International Patent Classification (IPC):  E04B 7/ 02( . ) E04B 7/ 10( . ) (86) International application number: PCT/GB1989/000221 (87) International publication number: WO 1989/008172 (08.09.1989 Gazette 1989/21)

(84) Designated Contracting States: AT BE CH DE FR IT LI NL SE (30) Priority: 04.03.1988 GB 19880005183 (71) Applicant: BROWN, Graham Morayshire Scotland IV36 0ST (GB)	(72) Inventor: BROWN, Graham Morayshire Scotland IV36 0ST (GB) (74) Representative: Milhench, Howard Leslie, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)