(19)

(11)

EP 1 812 136 A1

(12)

(43) Date of publication: 01.08.2007 Bulletin 2007/31 (21) Application number: 05800838.4 (22) Date of filing: 04.10.2005

(51) International Patent Classification (IPC):  B01D 35/28(2006.01) B01D 39/00(2006.01) B07B 1/52(2006.01) E03F 5/14(2006.01) (86) International application number: PCT/NZ2005/000255 (87) International publication number: WO 2006/038821 (13.04.2006 Gazette 2006/15)

(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: 04.10.2004 NZ 53572704 (71) Applicant: Power-Glides Screens Limited Castor Bay, Auckland (NZ)	(72) Inventors: BURGESS, George Castor Bay, Auckland, 1309 (NZ) BURGESS, Brian Blockhouse Bay, Auckland, 1007 (NZ) (74) Representative: Dixon, Philip Matthew et al i.p. 21 Limited, Norwich Research Park, Colney Norwich, Norfolk NR4 7UT Norwich, Norfolk NR4 7UT (GB)