(19)

(11)

EP 0 615 414 A1

(12)

(43) Date of publication: 21.09.1994 Bulletin 1994/38 (21) Application number: 93900840.0 (22) Date of filing: 04.12.1992

(51) International Patent Classification (IPC):  H01F 7/ 02( . ) (86) International application number: PCT/US1992/010446 (87) International publication number: WO 1994/006319 (31.03.1994 Gazette 1994/08)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.09.1992 US 19920944711 06.11.1992 US 19920971609 06.11.1992 US 19920972033 (71) Applicant: RANDOLPH-RAND CORPORATION New York, New York 10016 (US)	(72) Inventors: RICEMAN, Robert, G. West Caldwell, NJ 07006 (US) MEDINA, Mitchell, A. New York, NY 10016 (US) (74) Representative: Strehl Schübel-Hopf Groening & Partner  Maximilianstrasse 54 D-80538 München D-80538 München (DE)