(19)

(11)

EP 0 663 036 A1

(12)

(43) Date of publication: 19.07.1995 Bulletin 1995/29 (21) Application number: 94908060.0 (22) Date of filing: 09.08.1993

(51) International Patent Classification (IPC):  E04D 1/ 16( . ) E04D 1/ 22( . ) (86) International application number: PCT/GB1993/001683 (87) International publication number: WO 1994/004774 (03.03.1994 Gazette 1994/06)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.08.1992 GB 19920016969 08.02.1993 GB 19930002436 (71) Applicant: GRIBBLE, Meirion Pontyclun Mid Glamorgan CF7 9QR (GB)	(72) Inventor: GRIBBLE, Meirion Pontyclun Mid Glamorgan CF7 9QR (GB) (74) Representative: Austin, Hedley William, et al  Urquhart-Dykes & Lord Alexandra House 1 Alexandra Road Swansea West Glamorgan SA1 5ED Swansea West Glamorgan SA1 5ED (GB)