(19)

(11)

EP 2 170 557 A1

(12)

(43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08779358.4 (22) Date of filing: 05.06.2008

(51) International Patent Classification (IPC):  B24B 55/10(2006.01) (86) International application number: PCT/SE2008/050676 (87) International publication number: WO 2008/153486 (18.12.2008 Gazette 2008/51)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 15.06.2007 SE 0701458 (71) Applicant: HTC Sweden AB 614 22 Söderköping (SE)	(72) Inventor: THYSELL, Håkan S-SE-614 34 Söderköping (SE) (74) Representative: Bokinge, Ole  Awapatent AB Junkersgatan 1 582 35 Linköping 582 35 Linköping (SE)