(19)

(11)

EP 2 198 092 A2

(12)

(88) Date of publication A3: 05.11.2009 (43) Date of publication: 23.06.2010 Bulletin 2010/25 (21) Application number: 08830395.3 (22) Date of filing: 11.09.2008

(51) International Patent Classification (IPC):  E02D 3/12(2006.01) E02F 7/00(2006.01) (86) International application number: PCT/IB2008/002545 (87) International publication number: WO 2009/034469 (19.03.2009 Gazette 2009/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 11.09.2007 AU 2007904914 P (71) Applicant: Aqs Holdings Limited Maldon Essex CM9 8GX (GB)	(72) Inventor: ARMSTRONG, Andrew Maldon, Essex CM9 8GX (GB) (74) Representative: Walder, Jeremy Thomas et al Sanderson & Co., 34, East Stockwell Street Colchester, Essex CO1 1ST Colchester, Essex CO1 1ST (GB)