(19)

(11)

EP 1 831 477 A1

(12)

(43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05817666.0 (22) Date of filing: 07.12.2005

(51) International Patent Classification (IPC):  E04C 5/06(2006.01) (86) International application number: PCT/FI2005/050449 (87) International publication number: WO 2006/061461 (15.06.2006 Gazette 2006/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 09.12.2004 FI 20045470 (71) Applicant: Teräspeikko Oy 15230 Lahti (FI)	(72) Inventor: TUOMINEN, Kari FI-15900 Lahti (FI) (74) Representative: Valkeiskangas, Tapio Lassi Paavali  Kolster Oy Ab Iso Roobertinkatu 23, P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)