(19)

(11)

EP 1 608 486 A1

(12)

(43) Date of publication: 28.12.2005 Bulletin 2005/52 (21) Application number: 03775529.5 (22) Date of filing: 11.11.2003

(51) International Patent Classification (IPC)7: B24B 55/02, B24B 9/10 (86) International application number: PCT/GB2003/004885 (87) International publication number: WO 2004/087376 (14.10.2004 Gazette 2004/42)

(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: 01.04.2003 GB 0307512 26.08.2003 GB 0319862 (71) Applicant: Unova U.K. Limited Aylesbury,Buckinghamshire HP20 2RQ (GB)	(72) Inventors: COMLEY, Paul, Douglas Hitchin,Hertfordshire SG5 4HP (GB) PIERSE, Michael, George Bedford MK40 3TY (GB) (74) Representative: Nash, Keith Wilfrid et al KEITH W. NASH & Co., 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)