(19)

(11)

EP 0 843 762 A1

(12)

(43) Date of publication: 27.05.1998 Bulletin 1998/22 (21) Application number: 96926263.0 (22) Date of filing: 09.08.1996

(51) International Patent Classification (IPC):  E02B 15/ 04( . ) (86) International application number: PCT/AU1996/000502 (87) International publication number: WO 1997/007298 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.08.1995 AU 1995PN04754 (71) Applicant: INTERNATIONAL FLUID SEPARATION PTY. LIMITED East Hawthorn, VIC 3123 (AU)	(72) Inventor: CLARKE, Neville Berwick, VIC 3806 (AU) (74) Representative: Spall, Christopher John  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)