(19)

(11)

EP 0 713 555 A1

(12)

(43) Date of publication: 29.05.1996 Bulletin 1996/22 (21) Application number: 94923729.0 (22) Date of filing: 07.07.1994

(51) International Patent Classification (IPC):  E04B 7/ 22( . ) E04D 12/ 00( . ) E04D 1/ 34( . ) (86) International application number: PCT/EP1994/002293 (87) International publication number: WO 1995/003459 (02.02.1995 Gazette 1995/06)

(84) Designated Contracting States: BE GB IE NL (30) Priority: 24.07.1993 GB 19930015400 (71) Applicant: REDLAND TECHNOLOGIES LIMITED Reigate, Surrey RH2 0SJ (GB)	(72) Inventor: LAW, Frazer William Timothy Balham, London SW17 8JT (GB) (74) Representative: Grant, John Stephen Shirley  Redland PLC Redland House Reigate Surrey RH2 0SJ Reigate Surrey RH2 0SJ (GB)