(19)

(11)

EP 0 963 314 A1

(12)

(43) Date of publication: 15.12.1999 Bulletin 1999/50 (21) Application number: 98905151.0 (22) Date of filing: 27.02.1998

(51) International Patent Classification (IPC):  B63C 11/ 48( . ) B63G 8/ 00( . ) B63C 11/ 49( . ) B63C 11/ 38( . ) (86) International application number: PCT/AU1998/000132 (87) International publication number: WO 1998/038084 (03.09.1998 Gazette 1998/35)

(84) Designated Contracting States: DE ES FR GB GR IT PT (30) Priority: 27.02.1997 AU 1997PO05377 (71) Applicants: HBS Herf R & D Pty. Ltd. Toowoomba, QLD 4350 (AU) PD Technology Management Pty. Ltd. Avalon, NSW 2107 (AU)	(72) Inventor: RICHARDSON, Donald, George Clontarf, NSW 2093 (AU) (74) Representative: Gallafent, Richard John, et al  GALLAFENT & CO., 9 Staple Inn London WC1V 7QH London WC1V 7QH (GB)