(19)

(11)

EP 0 663 860 A1

(12)

(43) Date of publication: 26.07.1995 Bulletin 1995/30 (21) Application number: 93922129.0 (22) Date of filing: 05.10.1993

(51) International Patent Classification (IPC):  B21D 5/ 14( . ) (86) International application number: PCT/SE1993/000805 (87) International publication number: WO 1994/007622 (14.04.1994 Gazette 1994/09)

(84) Designated Contracting States: AT BE DE DK FR GB IT NL (30) Priority: 05.10.1992 SE 19920002912 (71) Applicant: BJÖRK, Reidar S-465 31 Nossebro (SE)	(72) Inventor: RAGNMARK, Lars-Olof S-441 33 Alingsas (SE) (74) Representative: Lindberg, Klas Valter Bo, et al  AWAPATENT AB, Södra Hamngatan 37-41, P.O. Box 11394 S-404 28 Göteborg S-404 28 Göteborg (SE)