(19)

(11)

EP 0 396 546 A1

(12)

(43) Date of publication: 14.11.1990 Bulletin 1990/46 (21) Application number: 88907557.0 (22) Date of filing: 29.08.1988

(51) International Patent Classification (IPC):  B65G 51/ 02( . ) B07C 5/ 342( . ) (86) International application number: PCT/AU1988/000333 (87) International publication number: WO 1989/001832 (09.03.1989 Gazette 1989/06)

(84) Designated Contracting States: FR GB IT (30) Priority: 28.08.1987 AU 19870004049 (71) Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION Parkville, VIC 3052 (AU)	(72) Inventors: ABBOTT, Grahame, Michael Grovedale, VIC 3206 (AU) ALLEN, Lindsay, Alfred Highton, VIC 3216 (AU) JOHNSON, David, Michael Daylesford, VIC 3460 (AU) (74) Representative: Miller, Joseph  J. MILLER & CO. 34 Bedford Row, Holborn London WC1R 4JH London WC1R 4JH (GB)