(19)

(11)

EP 1 218 895 A2

(12)

(88) Date of publication A3: 27.09.2001 (43) Date of publication: 03.07.2002 Bulletin 2002/27 (21) Application number: 00960851.4 (22) Date of filing: 18.09.2000

(51) International Patent Classification (IPC)7: H01F 13/00 (86) International application number: PCT/GB0003/594 (87) International publication number: WO 0120/621 (22.03.2001 Gazette 2001/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 16.09.1999 GB 9921963 (71) Applicant: Redcliffe Magtronics Limited Bristol BS4 5PS (GB)	(72) Inventors: Jones, David Geraint Rhys Bedminster,Bristol BS3 4QQ (GB) Lear, Mervyn Frederick Wick,Bristol BS30 5QZ (GB) (74) Representative: Milhench, Howard Leslie et al R.G.C. Jenkins & Co.26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)