(19)

(11)

EP 0 817 944 A1

(12)

(43) Date of publication: 14.01.1998 Bulletin 1998/03 (21) Application number: 96906686.0 (22) Date of filing: 28.03.1996

(51) International Patent Classification (IPC):  F24F 12/ 00( . ) F24F 1/ 00( . ) F28C 3/ 08( . ) (86) International application number: PCT/AU1996/000176 (87) International publication number: WO 1996/032611 (17.10.1996 Gazette 1996/46)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 12.04.1995 AU 1995PN02370 28.04.1995 AU 1995PN02640 (71) Applicant: Eco Air Limited Taren Point, NSW 2229 (AU)	(72) Inventor: URCH, John Francis Cronulla, NSW 2230 (AU) (74) Representative: Sanderson, Michael John, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)