(19)

(11)

EP 2 237 705 A1

(12)

(43) Date of publication: 13.10.2010 Bulletin 2010/41 (21) Application number: 09702271.9 (22) Date of filing: 15.01.2009

(51) International Patent Classification (IPC):  A47D 13/02(2006.01) (86) International application number: PCT/GB2009/050028 (87) International publication number: WO 2009/090427 (23.07.2009 Gazette 2009/30)

(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 TR Designated Extension States: AL BA RS (30) Priority: 18.01.2008 GB 0800948 (71) Applicant: University Of Durham Durham DH1 3HP (GB)	(72) Inventor: REID, Vincent Durham DH1 3HP (GB) (74) Representative: Elsworth, Dominic Stephen et al Hargreaves Elsworth 6 Charlotte Square Newcastle-upon-Tyne NE1 4XF Newcastle-upon-Tyne NE1 4XF (GB)