(19)

(11)

EP 0 992 043 A1

(12)

(43) Date of publication: 12.04.2000 Bulletin 2000/15 (21) Application number: 98910972.3 (22) Date of filing: 25.03.1998

(51) International Patent Classification (IPC)7: H01F 41/06 (86) International application number: PCT/JP9801/295 (87) International publication number: WO 9949/482 (30.09.1999 Gazette 1999/39)

(84) Designated Contracting States: DE GB IT (71) Applicant: NITTOKU ENGINEERING Co., Ltd. Urawa-shi,Saitama 336-0022 (JP)	(72) Inventor: NOJI, Kaoru,Nittoku Engineering Co., Ltd., Iino-machi, Date-gun,Fukushima 960-1300 (JP) (74) Representative: Carter, Stephen John et al Mewburn EllisYork House23 Kingsway London WC2B 6HP London WC2B 6HP (GB)