(19)

(11)

EP 1 651 385 A1

(12)

(43) Date of publication: 03.05.2006 Bulletin 2006/18 (21) Application number: 04716404.1 (22) Date of filing: 02.03.2004

(51) International Patent Classification (IPC):  B24B 3/33(1968.09) (86) International application number: PCT/SE2004/000283 (87) International publication number: WO 2004/080651 (23.09.2004 Gazette 2004/39)

(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 PL PT RO SE SI SK TR (30) Priority: 10.03.2003 SE 0300634 (71) Applicant: Atlas Copco Secoroc AB 737 25 Fagersta (SE)	(72) Inventor: LINDGREN, Hans S-932 37 Ursviken (SE) (74) Representative: Karlström, Lennart et al Noréns Patentbyra AB, Box 10198 100 55 Stockholm 100 55 Stockholm (SE)