(19)

(11)

EP 0 047 266 A1

(12)

(43) Date of publication: 17.03.1982 Bulletin 1982/11 (21) Application number: 81900547.0 (22) Date of filing: 02.03.1981

(51) International Patent Classification (IPC):  H01F 3/ 02( . ) H01F 27/ 245( . ) H01F 27/ 34( . ) H01F 38/ 10( . ) H01F 27/ 24( . ) H01F 27/ 26( . ) H01F 37/ 00( . ) (86) International application number: PCT/SE1981/000056 (87) International publication number: WO 1981/002648 (17.09.1981 Gazette 1981/22)

(84) Designated Contracting States: DE FR NL (30) Priority: 04.03.1980 SE 19800001690 (71) Applicant: Lumalampan Aktiebolag S-371 23 Karlskrona (SE)	(72) Inventors: BJÖRKMAN, Ake S-371 45 Karlskrona (SE) SIKANDER, Ake S-371 41 Karlskrona (SE) (74) Representative: Erixon, Bo  Kooperativa Förbundet (KF) Patent Department Box 15200 S-104 65 Stockholm S-104 65 Stockholm (SE)