(19)

(11)

EP 1 853 764 A2

(12)

(88) Date of publication A3: 19.10.2006 (43) Date of publication: 14.11.2007 Bulletin 2007/46 (21) Application number: 06716657.9 (22) Date of filing: 10.02.2006

(51) International Patent Classification (IPC):  E01B 1/00(2006.01) (86) International application number: PCT/NL2006/050023 (87) International publication number: WO 2006/088366 (24.08.2006 Gazette 2006/34)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 16.02.2005 NL 1028299 (71) Applicants: Koninklijke BAM Groep N.V. 3981 AZ Bunnik (NL) Pfleiderer Infrastrukturtechnik GmbH & Co. KG 92318 Neumarkt (DE)	(72) Inventor: WINTER, Theo NL-2496 VW Den Haag (NL) (74) Representative: van Westenbrugge, Andries  Nederlandsch Octrooibureau Postbus 29720 2502 LS Den Haag 2502 LS Den Haag (NL)