(19)

(11)

EP 0 123 674 A1

(12)

(43) Date of publication: 07.11.1984 Bulletin 1984/45 (21) Application number: 82902028.0 (22) Date of filing: 17.05.1982

(51) International Patent Classification (IPC):  G11B 21/ 08( . ) H02K 33/ 18( . ) G11B 5/ 55( . ) (86) International application number: PCT/US1982/000663 (87) International publication number: WO 1983/004130 (24.11.1983 Gazette 1983/27)

(84) Designated Contracting States: DE FR GB NL (71) Applicant: DISCTRON, INC. Milpitas, CA 95035 (US)	(72) Inventor: WRIGHT, Harold T. San Carlos, CA 94070 (US) (74) Representative: Godsill, John Kenneth, et al  Haseltine Lake & Co. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)