(19)

(11)

EP 0 563 166 A1

(12)

(43) Date of publication: 06.10.1993 Bulletin 1993/40 (21) Application number: 92901576.0 (22) Date of filing: 20.12.1991

(51) International Patent Classification (IPC):  C06B 21/ 00( . ) F42B 33/ 00( . ) (86) International application number: PCT/NO1991/000158 (87) International publication number: WO 1992/011222 (09.07.1992 Gazette 1992/17)

(84) Designated Contracting States: BE CH DE ES FR GB GR IT LI NL SE (30) Priority: 21.12.1990 NO 19900005584 (71) Applicant: DYNO INDUSTRIER A.S. N-3475 Saetre (NO)	(72) Inventors: VESTRE, Jan Hans N-3400 Lier (NO) ODBERG, Paul-Johny N-3475 S tre (NO) (74) Representative: Prechtel, Jörg, Dipl.-Phys. Dr., et al  Patentanwälte H. Weickmann, Dr. K. Fincke F.A. Weickmann, B. Huber Dr. H. Liska, Dr. J. Prechtel, Dr. B. Böhm Postfach 86 08 20 D-81635 München D-81635 München (DE)