(19)

(11)

EP 2 606 486 A2

(12)

(88) Date of publication A3: 01.11.2012 (43) Date of publication: 26.06.2013 Bulletin 2013/26 (21) Application number: 11758543.0 (22) Date of filing: 16.08.2011

(51) International Patent Classification (IPC):  G10D 1/08(2006.01) (86) International application number: PCT/GB2011/051543 (87) International publication number: WO 2012/022969 (23.02.2012 Gazette 2012/08)

(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: 30.12.2010 GB 201022091 17.08.2010 GB 201013760 (71) Applicant: Weatherill, David Northallerton, County Durham DL6 3BJ (GB)	(72) Inventor: Weatherill, David Northallerton, County Durham DL6 3BJ (GB) (74) Representative: Elsworth, Dominic Stephen  Hargreaves Elsworth Cooper's Studios 14-18 Westgate Road Newcastle-upon-Tyne NE1 3NN Newcastle-upon-Tyne NE1 3NN (GB)