(19)

(11)

EP 1 000 232 A1

(12)

(43) Date of publication: 17.05.2000 Bulletin 2000/20 (21) Application number: 98916656.6 (22) Date of filing: 24.04.1998

(51) International Patent Classification (IPC)7: F02B 33/10, F02B 75/24, F02B 75/28, F02B 75/40 (86) International application number: PCT/AU9800/300 (87) International publication number: WO 9849/434 (05.11.1998 Gazette 1998/44)

(84) Designated Contracting States: DE FR GB IT SE (30) Priority: 24.04.1997 AU PO641097 (71) Applicant: Mitchell, William Richard Sylvania Waters, NSW 2224 (AU)	(72) Inventor: Mitchell, William Richard Sylvania Waters, NSW 2224 (AU) (74) Representative: Vuillermoz, Bruno  Cabinet Laurent & CharrasB.P. 3220, rue Louis Chirpaz 69131 Ecully Cédex 69131 Ecully Cédex (FR)