(19)

(11)

EP 1 774 228 A1

(12)

(43) Date of publication: 18.04.2007 Bulletin 2007/16 (21) Application number: 05762386.0 (22) Date of filing: 27.07.2005

(51) International Patent Classification (IPC):  F24F 12/00(2006.01) (86) International application number: PCT/AU2005/001097 (87) International publication number: WO 2006/010205 (02.02.2006 Gazette 2006/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 27.07.2004 AU 2004904194 22.09.2004 AU 2004905481 22.09.2004 AU 2004905482 (71) Applicant: Air Change Pty Ltd Caringbah, NSW 2229 (AU)	(72) Inventor: URCH, John, Francis Cronulla, NSW 2230 (AU) (74) Representative: Marles, Alan David  Stevens, Hewlett & Perkins 1 St Augustine's Place Bristol BS1 4UD Bristol BS1 4UD (GB)