(19)

(11)

EP 0 344 164 A1

(12)

(43) Date of publication: 06.12.1989 Bulletin 1989/49 (21) Application number: 88900467.0 (22) Date of filing: 30.12.1987

(51) International Patent Classification (IPC):  E04B 9/ 28( . ) (86) International application number: PCT/GB1987/000924 (87) International publication number: WO 1988/005486 (28.07.1988 Gazette 1988/17)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.01.1987 GB 19870001001 (71) Applicant: GORDON, Donald George Folkestone, Kent CT20 2JP (GB)	(72) Inventor: GORDON, Donald George Folkestone, Kent CT20 2JP (GB) (74) Representative: Henningsson, Gunnar  AWAPATENT AB, Box 45086 S-104 30 Stockholm S-104 30 Stockholm (SE)