(19)
(11) EP 1 609 916 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.04.2006 Bulletin 2006/14

(43) Date of publication A2:
28.12.2005 Bulletin 2005/52

(21) Application number: 05016382.3

(22) Date of filing: 17.07.1998
(51) International Patent Classification (IPC): 
E02F 3/92(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.07.1997 BE 9700625

(62) Application number of the earlier application in accordance with Art. 76 EPC:
98870161.1 / 0892116

(71) Applicant: "Dredging International"
B-2070 Zwijndrecht (BE)

(72) Inventor:
  • Vandycke, Stefaan
    8450 Bredene (BE)

(74) Representative: Luys, Marie-José A.H. et al
Gevers & Vander Haeghen, Holidaystraat 5
1831 Diegem
1831 Diegem (BE)

   


(54) Drag head for a trailing suction hopper dredger and process for dredging by means of this drag head


(57) This invention concerns a drag head for a trailing suction hopper dredger which essentially consists of a structure connected to a suction pipe, with a visor (2) rotating around an horizontal axis (6), in which a series of teeth (10) are applied for breaking up the sand, which are arranged along a line which extends perpendicularly with respect to the direction of motion of the drag head, and a first series of jet pipes (9) for injecting water under high pressure, which are arranged along a line parallel to the line and in front of said teeth, wherein at least one second series of jet pipes (12,12') is provided along a line parallel to and behind the line of said teeth
Figure 1.







Search report