(19)

(11)

EP 1 603 785 A1

(12)

(43) Date of publication: 14.12.2005 Bulletin 2005/50 (21) Application number: 04714833.3 (22) Date of filing: 26.02.2004

(51) International Patent Classification (IPC)7: B61L 1/20 (86) International application number: PCT/GB2004/000739 (87) International publication number: WO 2004/076256 (10.09.2004 Gazette 2004/37)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 28.02.2003 GB 0304633 (71) Applicant: CDSRAIL Limited Fareham,Hampshire PO15 7AG (GB)	(72) Inventor: FOX, Simon William Aldershot,Hampshire GU11 3EL (GB) (74) Representative: Pratt, Richard Wilson et al D Young & Co, 120 Holborn London EC1N 2DY London EC1N 2DY (GB)