(19)

(11)

EP 1 946 329 A1

(12)

(43) Date of publication: 23.07.2008 Bulletin 2008/30 (21) Application number: 06784232.8 (22) Date of filing: 08.09.2006

(51) International Patent Classification (IPC):  G21C 7/20(2006.01) G21C 9/02(2006.01) H02K 49/04(2006.01) (86) International application number: PCT/SE2006/050319 (87) International publication number: WO 2007/055645 (18.05.2007 Gazette 2007/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 09.11.2005 SE 0502482 (71) Applicant: Westinghouse Electric Sweden AB 721 63 Västerås (SE)	(72) Inventor: STÅHL, Gunnar S-730 40 Kolbäck (SE) (74) Representative: Berglund, Stefan  Bjerkéns Patentbyra KB Östermalmsgatan 58 114 50 Stockholm 114 50 Stockholm (SE)