(19)

(11)

EP 2 640 898 A1

(12)

(43) Date of publication: 25.09.2013 Bulletin 2013/39 (21) Application number: 11791037.2 (22) Date of filing: 21.11.2011

(51) International Patent Classification (IPC):  E01C 23/06(2006.01) (86) International application number: PCT/GB2011/052283 (87) International publication number: WO 2012/066362 (24.05.2012 Gazette 2012/21)

(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: 20.11.2010 GB 201019732 (71) Applicant: Velocity UK Limited Tyne&Wear SR1 2NL (GB)	(72) Inventor: JACKSON, Richard Tyne and Wear SR1 2NL (GB) (74) Representative: Vinsome, Rex Martin  Urquhart-Dykes & Lord LLP 12th Floor Cale Cross House 156 Pilgrim Street Newcastle-upon-Tyne NE1 6SU Newcastle-upon-Tyne NE1 6SU (GB)