(19)

(11)

EP 0 089 349 A1

(12)

(43) Date of publication: 28.09.1983 Bulletin 1983/39 (21) Application number: 82902752.0 (22) Date of filing: 28.09.1982

(51) International Patent Classification (IPC):  F22B 1/ 28( . ) F22B 37/ 54( . ) F22B 37/ 26( . ) (86) International application number: PCT/NO1982/000050 (87) International publication number: WO 1983/001101 (31.03.1983 Gazette 1983/08)

(84) Designated Contracting States: BE CH DE GB LI NL SE (30) Priority: 28.09.1981 NO 19810003278 (71) Applicant: LOVIK, Alf N-Oslo 11 (NO)	(72) Inventors: LOVIK, Alf N-Oslo 11 (NO) HEIEN, Sigurd N-1362 Billingstad (NO)