(19)

(11)

EP 2 142 839 A1

(12)

(43) Date of publication: 13.01.2010 Bulletin 2010/02 (21) Application number: 08737236.3 (22) Date of filing: 30.04.2008

(51) International Patent Classification (IPC):  F16L 59/06(2006.01) F16L 9/18(2006.01) (86) International application number: PCT/GB2008/050312 (87) International publication number: WO 2008/135780 (13.11.2008 Gazette 2008/46)

(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 (30) Priority: 03.05.2007 GB 0708560 (71) Applicant: Verderg Ltd Knaphill Surrey GU21 2EP (GB)	(72) Inventor: ROBERTS, Peter Knaphill Surrey GU21 2EP (GB) (74) Representative: Hyden, Martin Douglas  Rouse Patents 1st Floor 228-240 Banbury Road Oxford Oxfordshire OX2 7BY Oxford Oxfordshire OX2 7BY (GB)