(19)

(11)

EP 0 506 678 A1

(12)

(43) Date of publication: 07.10.1992 Bulletin 1992/41 (21) Application number: 90916840.0 (22) Date of filing: 08.11.1990

(51) International Patent Classification (IPC):  E04B 5/ 48( . ) F24D 5/ 10( . ) E04C 2/ 52( . ) (86) International application number: PCT/SE1990/000726 (87) International publication number: WO 1991/007557 (30.05.1991 Gazette 1991/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 08.11.1989 SE 19890003732 14.09.1990 SE 19900002941 (71) Applicant: LEGALETT SVENSKA AB S-446 01 Aelvängen (SE)	(72) Inventor: V LSTAD, Ove, Charles N-4344 Kvernaland (NO) (74) Representative: Gulliksson, Jonas, et al  Ström & Gulliksson AB Studentgatan 1 P.O. Box 4188 S-203 13 Malmö S-203 13 Malmö (SE)