(19)

(11)

EP 0 648 303 A1

(12)

(43) Date of publication: 19.04.1995 Bulletin 1995/16 (21) Application number: 93913747.0 (22) Date of filing: 10.06.1993

(51) International Patent Classification (IPC):  B28B 1/ 52( . ) B28B 19/ 00( . ) E04C 2/ 24( . ) E04C 2/ 296( . ) B28B 13/ 02( . ) B32B 13/ 02( . ) E04C 2/ 288( . ) (86) International application number: PCT/SE1993/000518 (87) International publication number: WO 1993/025778 (23.12.1993 Gazette 1993/30)

(84) Designated Contracting States: BE CH DE DK ES FR GB IE IT LI NL PT (30) Priority: 17.06.1992 SE 19920001859 17.06.1992 SE 19920001860 (71) Applicant: Bäckman, Sture S-733 39 Sala (SE)	(72) Inventors: BÄCKMAN, Sture S-733 39 Sala (SE) ERIKSSON, Sture S-744 31 Heby (SE) MILLER, Arvo S-182 35 Danderyd (SE) (74) Representative: Rosenquist, Per Olof, et al  Bergenstrahle & Lindvall AB, P.O. Box 17704 S-118 93 Stockholm S-118 93 Stockholm (SE)