(19)

(11)

EP 0 045 762 A1

(12)

(43) Date of publication: 17.02.1982 Bulletin 1982/07 (21) Application number: 81900437.0 (22) Date of filing: 20.02.1981

(51) International Patent Classification (IPC):  B63B 21/ 20( . ) B63B 21/ 29( . ) (86) International application number: PCT/GB1981/000024 (87) International publication number: WO 1981/002413 (03.09.1981 Gazette 1981/21)

(84) Designated Contracting States: FR GB (30) Priority: 21.02.1980 GB 19800006129 (71) Applicant: BRUPAT LIMITED Douglas Isle of Man (GB)	(72) Inventor: BRUCE, Peter Douglas Isle of Man (GB) (74) Representative: Wotherspoon, Graham, et al  FITZPATRICKS 4 West Regent Street Glasgow G2 1RS Scotland Glasgow G2 1RS Scotland (GB)