(19)

(11)

EP 0 449 937 A1

(12)

(43) Date of publication: 09.10.1991 Bulletin 1991/41 (21) Application number: 90901075.0 (22) Date of filing: 21.12.1989

(51) International Patent Classification (IPC):  B30B 15/ 04( . ) (86) International application number: PCT/SE1989/000744 (87) International publication number: WO 1990/006843 (28.06.1990 Gazette 1990/15)

(84) Designated Contracting States: DE FR GB (30) Priority: 22.12.1988 SE 19880004631 (71) Applicant: HOVA SVETS AB S-540 70 Hova (SE)	(72) Inventor: SVENSSON, Hans S-542 02 Älgaras (SE) (74) Representative: Axelsson, Rolf, et al  Kransell & Wennborg AB Box 27834 S-115 93 Stockholm S-115 93 Stockholm (SE)