(19)

(11)

EP 0 898 472 A1

(12)

(43) Date of publication: 03.03.1999 Bulletin 1999/09 (21) Application number: 97917181.0 (22) Date of filing: 24.04.1997

(51) International Patent Classification (IPC):  A61F 5/ 02( . ) A61F 5/ 37( . ) (86) International application number: PCT/AU1997/000251 (87) International publication number: WO 1997/039704 (30.10.1997 Gazette 1997/46)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 24.04.1996 AU 1996PN09480 13.05.1996 AU 1996PN09790 13.11.1996 AU 1996PN03596 18.03.1997 AU 1996PO05707 (71) Applicant: CHARTERS, John Dumergue Midland, W.A. 6056 (AU)	(72) Inventor: CHARTERS, John Dumergue Midland, W.A. 6056 (AU) (74) Representative: Ouzman, Beverley Nicola Claire, et al  Murgitroyd and Company, 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)