(19)

(11)

EP 1 123 443 A1

(12)

(43) Date of publication: 16.08.2001 Bulletin 2001/33 (21) Application number: 99952664.3 (22) Date of filing: 19.10.1999

(51) International Patent Classification (IPC)7: E01C 11/04, E02D 27/01, E04F 15/14 (86) International application number: PCT/FI9900/865 (87) International publication number: WO 0023/653 (27.04.2000 Gazette 2000/17)

(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: 20.10.1998 FI 982269 10.12.1998 FI 982675 (71) Applicant: Teräspeikko Oy 15230 Lahti (FI)	(72) Inventors: KINNUNEN, Jorma FIN-15800 Lahti (FI) TUOMINEN, Kari FIN-15900 Lahti (FI) VARVIKKO, Kimmo 15240 Lahti (FI) PULKKANEN, Juha FIN-15700 Lahti (FI) (74) Representative: Peltonen, Antti Sakari et al Kolster Oy Ab,Iso Roobertinkatu 23,P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)