(19)

(11)

EP 1 687 118 A1

(12)

(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04798452.1 (22) Date of filing: 08.11.2004

(51) International Patent Classification (IPC):  B24B 19/12(2006.01) B24B 53/053(2006.01) B24B 41/06(2006.01) (86) International application number: PCT/GB2004/004729 (87) International publication number: WO 2005/051596 (09.06.2005 Gazette 2005/23)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 21.11.2003 GB 0327104 (71) Applicant: Unova U.K. Limited Aylesbury, Buckinghamshire HP20 2RQ (GB)	(72) Inventor: GRAYSTON, Granville West Yorkshire BD20 7DS (GB) (74) Representative: Sharrock, Daniel John et al Keith W Nash & Co 90-92 Regent Street GB-Cambridge, CB2 1DP GB-Cambridge, CB2 1DP (GB)