(19)

(11)

EP 2 430 239 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 09840682.0 (22) Date of filing: 24.11.2009

(51) International Patent Classification (IPC):  E01B 25/00(2006.01) E01B 25/30(2006.01) (86) International application number: PCT/FI2009/000098 (87) International publication number: WO 2010/097498 (02.09.2010 Gazette 2010/35)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 24.02.2009 FI 20090069 (71) Applicant: Ollikainen, Pentti Markus 90150 Oulu (FI)	(72) Inventor: Ollikainen, Pentti Markus 90150 Oulu (FI) (74) Representative: Huhtanen, Ossi Jaakko  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)