(19)

(11)

EP 0 993 554 A1

(12)

(43) Date of publication: 19.04.2000 Bulletin 2000/16 (21) Application number: 98914704.6 (22) Date of filing: 16.04.1998

(51) International Patent Classification (IPC)7: F04C 29/04, F04D 29/24, F04D 29/58 (86) International application number: PCT/AU9800/264 (87) International publication number: WO 9848/172 (29.10.1998 Gazette 1998/43)

(84) Designated Contracting States: BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 18.04.1997 AU PO006297 (71) Applicant: Barnes, John Eastman Ashmore, Qld 4214 (AU)	(72) Inventor: Barnes, John Eastman Ashmore, Qld 4214 (AU) (74) Representative: Barnfather, Karl Jon, Dr. et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)