(19)

(11)

EP 2 643 528 A2

(12)

(88) Date of publication A3: 07.03.2013 (43) Date of publication: 02.10.2013 Bulletin 2013/40 (21) Application number: 11811362.0 (22) Date of filing: 28.11.2011

(51) International Patent Classification (IPC):  E02D 29/055(2006.01) (86) International application number: PCT/GB2011/001657 (87) International publication number: WO 2012/069796 (31.05.2012 Gazette 2012/22)

(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: 26.11.2010 GB 201020097 07.12.2010 GB 201020699 (71) Applicant: Thomson, James 1215 Geneva 15 (CH)	(72) Inventor: Thomson, James 1215 Geneva 15 (CH) (74) Representative: Wood, Graham  Bailey Walsh & Co LLP 5 York Place, Leeds LS1 2SD Leeds LS1 2SD (GB)