(19)

(11)

EP 1 766 758 A2

(12)

(88) Date of publication A3: 21.12.2006 (43) Date of publication: 28.03.2007 Bulletin 2007/13 (21) Application number: 05760256.7 (22) Date of filing: 10.06.2005

(51) International Patent Classification (IPC):  H02K 23/16(2006.01) (86) International application number: PCT/US2005/020758 (87) International publication number: WO 2005/124976 (29.12.2005 Gazette 2005/52)

(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 MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 10.06.2004 US 578511 P 09.06.2005 US 149101 (71) Applicant: INTERNATIONAL RECTIFIER CORPORATION El Segundo, CA 90245 (US)	(72) Inventors: ESKRITT, James, B. Halifax, Nova Scotia B3N 1Y2 (CA) KUEHNER, Joel, E. Upper Sackville, Nova Scotia B4E 3B7 (CA) (74) Representative: Schindelmann, Peter  c/o Maiwald Patentanwalts GmbH Elisenhof Elisenstraße 3 D-80335 München D-80335 München (DE)