(19)

(11)

EP 1 163 404 A1

(12)

(43) Date of publication: 19.12.2001 Bulletin 2001/51 (21) Application number: 00917553.0 (22) Date of filing: 10.03.2000

(51) International Patent Classification (IPC)7: E04C 3/18 (86) International application number: PCT/SE0000/469 (87) International publication number: WO 0055/445 (21.09.2000 Gazette 2000/38)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU Designated Extension States: AL LT LV MK RO SI (30) Priority: 15.03.1999 SE 9900918 (71) Applicant: Industriellt Utvecklingscenter Dalarna AB 781 27 Borlänge (SE)	(72) Inventor: LINDGREN, Kenneth S-784 37 Borlänge (SE) (74) Representative: Hedman, Anders et al Aros Patent AB P.O. Box 1544 751 45 Uppsala 751 45 Uppsala (SE)