(19)

(11)

EP 1 807 573 A1

(12)

(43) Date of publication: 18.07.2007 Bulletin 2007/29 (21) Application number: 05796971.9 (22) Date of filing: 10.10.2005

(51) International Patent Classification (IPC):  E02D 31/00(2006.01) (86) International application number: PCT/GB2005/003878 (87) International publication number: WO 2006/038029 (13.04.2006 Gazette 2006/15)

(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: 08.10.2004 GB 0422333 (71) Applicant: ABG Limited Meltham HD9 4DS (GB)	(72) Inventor: BAMFORTH, Alan Holmfirth HD9 4DZ (GB) (74) Representative: Harrison Goddard Foote  Belgrave Hall, Belgrave Street Leeds, LS2 8DD Leeds, LS2 8DD (GB)