(19)

(11)

EP 0 240 518 A1

(12)

(43) Date of publication: 14.10.1987 Bulletin 1987/42 (21) Application number: 86905678.0 (22) Date of filing: 24.09.1986

(51) International Patent Classification (IPC):  B63H 9/ 10( . ) (86) International application number: PCT/AU1986/000279 (87) International publication number: WO 1987/002003 (09.04.1987 Gazette 1987/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.09.1985 AU 19850002609 (71) Applicant: HUTTON, Paul Joseph Newport, NSW 2106 (AU)	(72) Inventor: VIDGEN, Victor, David Newport, NSW 2106 (AU)