(19)

(11)

EP 2 136 955 A1

(12)

(43) Date of publication: 30.12.2009 Bulletin 2009/53 (21) Application number: 08741848.9 (22) Date of filing: 18.04.2008

(51) International Patent Classification (IPC):  B23D 57/00(2006.01) B28D 1/00(2006.01) (86) International application number: PCT/SE2008/000274 (87) International publication number: WO 2008/130305 (30.10.2008 Gazette 2008/44)

(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 (30) Priority: 20.04.2007 SE 0700970 (71) Applicant: Tractive AB 781 70 Borlänge (SE)	(72) Inventor: JOHNSEN, Anders S-781 93 Borlänge (SE) (74) Representative: Janson, Ronny  Ehrner & Delmar Patentbyrå AB Box 10316 100 55 Stockholm 100 55 Stockholm (SE)