(19)

(11)

EP 0 396 569 A1

(12)

(43) Date of publication: 14.11.1990 Bulletin 1990/46 (21) Application number: 88910069.0 (22) Date of filing: 21.11.1988

(51) International Patent Classification (IPC):  E04B 7/ 14( . ) E04H 15/ 18( . ) (86) International application number: PCT/GB1988/001020 (87) International publication number: WO 1989/004896 (01.06.1989 Gazette 1989/12)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 20.11.1987 GB 19870027185 21.09.1988 GB 19880022173 (71) Applicant: Evans, Leighton David Maesteg Glamorgan CF34 9EE (GB)	(72) Inventor: Evans, Leighton David Maesteg Glamorgan CF34 9EE (GB) (74) Representative: James, Michael John Gwynne, et al  Wynne-Jones, Lainé & James Morgan Arcade Chambers 33, St. Mary Street Cardiff Clamorgan CF1 2AB Cardiff Clamorgan CF1 2AB (GB)