(19)

(11)

EP 2 318 591 A1

(12)

(43) Date of publication: 11.05.2011 Bulletin 2011/19 (21) Application number: 09766941.0 (22) Date of filing: 12.06.2009

(51) International Patent Classification (IPC):  E01C 23/12(2006.01) (86) International application number: PCT/SE2009/050731 (87) International publication number: WO 2009/154551 (23.12.2009 Gazette 2009/52)

(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 TR Designated Extension States: AL BA RS (30) Priority: 16.06.2008 SE 0801398 (71) Applicant: Conjet AB 136 25 Haninge (SE)	(72) Inventor: NILSSON, Kjell S-13236 Saltsjö-Boo (SE) (74) Representative: Aslund, G Roland  Avesta Patentbyrå KB P.O. Box 99 775 26 Krylbo 775 26 Krylbo (SE)