(19)

(11)

EP 1 984 570 A1

(12)

(43) Date of publication: 29.10.2008 Bulletin 2008/44 (21) Application number: 07704844.5 (22) Date of filing: 09.02.2007

(51) International Patent Classification (IPC):  E01H 5/06(2006.01) E02F 3/815(2006.01) (86) International application number: PCT/FI2007/050074 (87) International publication number: WO 2007/090935 (16.08.2007 Gazette 2007/33)

(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: 10.02.2006 FI 20065102 (71) Applicant: Lametal OY FI-73100 Lapinlahti (FI)	(72) Inventor: MARTIKAINEN, Unto FI-74130 Iisalmi (FI) (74) Representative: Rahkonen, Erkki Juhani  Tampereen Patenttitoimisto Oy Hermiankatu 1 B 33720 Tampere 33720 Tampere (FI)