(19)

(11)

EP 1 226 319 A1

(12)

(43) Date of publication: 31.07.2002 Bulletin 2002/31 (21) Application number: 00976496.0 (22) Date of filing: 01.11.2000

(51) International Patent Classification (IPC)7: E04C 2/34 (86) International application number: PCT/SE0002/142 (87) International publication number: WO 0133/005 (10.05.2001 Gazette 2001/19)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 01.11.1999 SE 9903961 (71) Applicant: Avesta Polarit AB (publ) 103 27 Stockholm (SE)	(72) Inventor: CARLSSON, Leif S-465 91 Nossebro (SE) (74) Representative: Bjelkstam, Peter  Bergenstrahle & Lindvall AB,Box 17704 118 93 Stockholm 118 93 Stockholm (SE)