(19)

(11)

EP 0 533 784 A1

(12)

(43) Date of publication: 31.03.1993 Bulletin 1993/13 (21) Application number: 91911372.0 (22) Date of filing: 14.06.1991

(51) International Patent Classification (IPC):  F41H 3/ 02( . ) (86) International application number: PCT/SE1991/000432 (87) International publication number: WO 1991/019950 (26.12.1991 Gazette 1991/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 14.06.1990 SE 19900002115 (71) Applicant: BARRACUDA TECHNOLOGIES AB S-594 00 Gamleby (SE)	(72) Inventor: WALLIN, Erik S-594 00 Gamleby (SE) (74) Representative: Winblad, Hans Peter, et al  H. Albihns Patentbyra AB, P.O. Box 3137 S-103 62 Stockholm S-103 62 Stockholm (SE)