(19)

(11)

EP 2 349 572 A1

(12)

(43) Date of publication: 03.08.2011 Bulletin 2011/31 (21) Application number: 09785635.5 (22) Date of filing: 14.09.2009

(51) International Patent Classification (IPC):  B02C 4/12(2006.01) B02C 4/08(2006.01) B02C 4/02(2006.01) B02C 4/30(2006.01) (86) International application number: PCT/GB2009/051181 (87) International publication number: WO 2010/032037 (25.03.2010 Gazette 2010/12)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 19.09.2008 GB 0817132 (71) Applicant: Mmd Design&consultancy Limited Somercotes, Derbyshire DE55 4NJ (GB)	(72) Inventor: POTTS, Alan Somercotes Derbyshire DE55 4NJ (GB) (74) Representative: Wilson, Peter  Murgitroyd & Company 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)