(19)

(11)

EP 2 637 971 A1

(12)

(43) Date of publication: 18.09.2013 Bulletin 2013/38 (21) Application number: 11839510.2 (22) Date of filing: 14.11.2011

(51) International Patent Classification (IPC):  C02F 1/00(2006.01) C02F 9/00(2006.01) E04H 4/16(2006.01) C02F 103/42(2006.01) (86) International application number: PCT/AU2011/001472 (87) International publication number: WO 2012/061906 (18.05.2012 Gazette 2012/20)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 12.11.2010 AU 2010905059 (71) Applicant: Poolrite Research Pty Ltd Mt Gravatt, Queensland 4122 (AU)	(72) Inventors: PALMER, Ross Leslie Mt Gravatt, Queensland 4122 (AU) KELLY, Aaron Mt Gravatt, Queensland 4122 (AU) ANDERSON, Stuart Bruce Mt Gravatt East, Queensland 4122 (AU) (74) Representative: Gervasi, Gemma et al Notarbartolo & Gervasi S.p.A. Corso di Porta Vittoria 9 20122 Milano 20122 Milano (IT)