(19)

(11)

EP 0 824 623 A1

(12)

(43) Date of publication: 25.02.1998 Bulletin 1998/09 (21) Application number: 96913652.0 (22) Date of filing: 10.05.1996

(51) International Patent Classification (IPC):  E04D 13/ 158( . ) (86) International application number: PCT/GB1996/001124 (87) International publication number: WO 1996/035848 (14.11.1996 Gazette 1996/50)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.05.1995 GB 19950009530 05.01.1996 GB 19960000197 (71) Applicant: Schofield, Frederick, Andrew Newtonwards County Down BT23 4RY (GB)	(72) Inventor: Schofield, Frederick, Andrew Newtonwards County Down BT23 4RY (GB) (74) Representative: Earnshaw, Geoffrey Mark  Ansons, 240 Upper Newtownards Road Belfast BT4 3EU, Northern Ireland Belfast BT4 3EU, Northern Ireland (GB)