(19)

(11)

EP 2 643 523 A1

(12)

(43) Date of publication: 02.10.2013 Bulletin 2013/40 (21) Application number: 10860083.4 (22) Date of filing: 22.11.2010

(51) International Patent Classification (IPC):  E01H 5/06(2006.01) (86) International application number: PCT/NO2010/000425 (87) International publication number: WO 2012/070943 (31.05.2012 Gazette 2012/22)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (71) Applicant: Tellefsdal AS 4993 Sundebru (NO)	(72) Inventor: ABRAHAMSEN, Erik NO-3770 Kragerø (NO) (74) Representative: Protector IP Consultants AS  Oscarsgate 20 0352 Oslo 0352 Oslo (NO)