(19)

(11)

EP 1 828 658 A1

(12)

(43) Date of publication: 05.09.2007 Bulletin 2007/36 (21) Application number: 05811593.2 (22) Date of filing: 02.12.2005

(51) International Patent Classification (IPC):  F16L 15/00(2006.01) (86) International application number: PCT/GB2005/004625 (87) International publication number: WO 2006/061577 (15.06.2006 Gazette 2006/24)

(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: 06.12.2004 GB 0426628 24.12.2004 GB 0428350 08.10.2005 GB 0520476 (71) Applicant: HGDS Inc. Las Vegas NV 89106-3812 (US)	(72) Inventor: HIGNETT, Ian, Harold Norfolk NR30 3PD (GB) (74) Representative: Harrison, Paul Richard et al Novagraaf Norwich Limited Willow Lane House Willow Lane Norwich NR2 1EU Norwich NR2 1EU (GB)