(19)

(11)

EP 1 973 812 A1

(12)

(43) Date of publication: 01.10.2008 Bulletin 2008/40 (21) Application number: 06820702.6 (22) Date of filing: 22.12.2006

(51) International Patent Classification (IPC):  B65G 11/20(2006.01) B65G 65/40(2006.01) (86) International application number: PCT/GB2006/050477 (87) International publication number: WO 2007/072084 (28.06.2007 Gazette 2007/26)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 23.12.2005 GB 0526383 (71) Applicant: University of Greenwich Park Row Greenwich London SE10 9LS (GB)	(72) Inventor: FARNISH, Richard Chatham ME4 4TB (GB) (74) Representative: Blake, John Henry Francis  Brookes Batchellor LLP 102-108 Clerkenwell Road London EC1M 5SA London EC1M 5SA (GB)