(19)

(11)

EP 1 730 353 A1

(12)

(43) Date of publication: 13.12.2006 Bulletin 2006/50 (21) Application number: 05722216.8 (22) Date of filing: 16.03.2005

(51) International Patent Classification (IPC):  E01C 23/12(2006.01) (86) International application number: PCT/SE2005/000370 (87) International publication number: WO 2005/090684 (29.09.2005 Gazette 2005/39)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 24.03.2004 SE 0400753 (71) Applicant: Conjet AB S-136 25 Haninge (SE)	(72) Inventors: STRÖMDAHL, Carl, kesson S-12247 Enskede (SE) NILSSON, Kjell S-132 36 Saltsjö-Boo (SE)