(19)

(11)

EP 0 466 799 A1

(12)

(43) Date of publication: 22.01.1992 Bulletin 1992/04 (21) Application number: 90906400.0 (22) Date of filing: 04.04.1990

(51) International Patent Classification (IPC):  F42B 12/ 16( . ) (86) International application number: PCT/SE1990/000223 (87) International publication number: WO 1990/012272 (18.10.1990 Gazette 1990/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 06.04.1989 SE 19890001202 (71) Applicant: AB BOFORS S-691 80 Bofors (SE)	(72) Inventors: BRATTSTRÖM, Leif S-691 47 Karlskoga (SE) LINDEN, Sven-Erik S-713 00 Nora (SE) (74) Representative: Olsson, Gunnar, et al  AKZO NOBEL SERVICES AB IoD Box 11551 S-100 61 Stockholm S-100 61 Stockholm (SE)