(19)

(11)

EP 2 516 775 A1

(12)

(43) Date of publication: 31.10.2012 Bulletin 2012/44 (21) Application number: 10838430.6 (22) Date of filing: 23.12.2010

(51) International Patent Classification (IPC):  E04H 4/16(2006.01) (86) International application number: PCT/AU2010/001742 (87) International publication number: WO 2011/075790 (30.06.2011 Gazette 2011/26)

(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: 24.12.2009 AU 2009906300 (71) Applicant: Poolrite Research Pty Ltd Mt Gravatt, Queensland 4122 (AU)	(72) Inventors: PALMER, Ross Mt Gravatt Queensland 4122 (AU) FIFIELD, Simon Mt Gravatt Queensland 4122 (AU) (74) Representative: Gervasi, Gemma et al Notarbartolo & Gervasi S.p.A. Corso di Porta Vittoria 9 20122 Milano 20122 Milano (IT)