(19)

(11)

EP 0 285 644 A1

(12)

(43) Date of publication: 12.10.1988 Bulletin 1988/41 (21) Application number: 87906828.0 (22) Date of filing: 14.10.1987

(51) International Patent Classification (IPC):  E06B 7/ 10( . ) (86) International application number: PCT/GB1987/000723 (87) International publication number: WO 1988/002805 (21.04.1988 Gazette 1988/09)

(84) Designated Contracting States: BE DE FR GB NL SE (30) Priority: 14.10.1986 GB 19860024588 02.07.1987 GB 19870015570 (71) Applicant: HAMILTON, John George Edinburgh EH10 7AP (GB)	(72) Inventor: HAMILTON, John George Edinburgh EH10 7AP (GB) (74) Representative: Fitzpatrick, Alan James  Fitzpatricks, 4 West Regent Street Glasgow G2 1RS, Scotland Glasgow G2 1RS, Scotland (GB)