(19)

(11)

EP 0 056 365 A1

(12)

(43) Date of publication: 28.07.1982 Bulletin 1982/30 (21) Application number: 80901483.0 (22) Date of filing: 07.07.1980

(51) International Patent Classification (IPC):  B22D 11/ 04( . ) G01B 7/ 287( . ) (86) International application number: PCT/EP1980/000046 (87) International publication number: WO 1982/000195 (21.01.1982 Gazette 1982/03)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL (71) Applicant: VIAK AB S-961 00 Boden (SE)	(72) Inventors: GARPENDAHL, Gunnar S-184 00 Akersberga (SE) BRUCE, Ingrid S-114 59 Stockholm (SE) LUNDMARK,Ebbe S-961 00 Boden (SE) (74) Representative: Onn, Thorsten  AB Stockholms Patentbyra Zacco & Bruhn P.O. Box 23101 S-104 35 Stockholm S-104 35 Stockholm (SE)