(19)

(11)

EP 0 160 676 A1

(12)

(43) Date of publication: 13.11.1985 Bulletin 1985/46 (21) Application number: 84903939.0 (22) Date of filing: 31.10.1984

(51) International Patent Classification (IPC):  B63H 9/ 06( . ) (86) International application number: PCT/AU1984/000221 (87) International publication number: WO 1985/002158 (23.05.1985 Gazette 1985/12)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 07.11.1983 AU 19830002229 (71) Applicant: DERATZ, Stephen F. Narrabeen, NSW 2101 (AU)	(72) Inventor: DERATZ, Stephen F. Narrabeen, NSW 2101 (AU)