(19)

(11)

EP 1 644 583 A1

(12)

(43) Date of publication: 12.04.2006 Bulletin 2006/15 (21) Application number: 04774816.5 (22) Date of filing: 05.07.2004

(51) International Patent Classification (IPC):  E01C 13/08(1995.01) (86) International application number: PCT/NL2004/000478 (87) International publication number: WO 2005/003463 (13.01.2005 Gazette 2005/02)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 03.07.2003 US 485075 P (71) Applicant: Inventress B.V. 2324 HJ Leiden (NL)	(72) Inventor: BRANDON, Abraham, Wilhelmus NL-7971 AK Havelte (NL) (74) Representative: Jilderda, Anne Ayolt  Octrooibureau LIOC B.V., Postbus 13363 3507 LJ Utrecht 3507 LJ Utrecht (NL)