(19)

(11)

EP 0 228 446 A1

(12)

(43) Date of publication: 15.07.1987 Bulletin 1987/29 (21) Application number: 86904449.0 (22) Date of filing: 04.07.1986

(51) International Patent Classification (IPC):  B21D 51/ 44( . ) B65D 41/ 44( . ) (86) International application number: PCT/SE1986/000324 (87) International publication number: WO 1987/000511 (29.01.1987 Gazette 1987/03)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 16.07.1985 SE 19850003494 (71) Applicant: SJÖGREN, Börje S-141 41 Huddinge (SE)	(72) Inventor: SJÖGREN, Börje S-141 41 Huddinge (SE)