Cutter head and suction dredger

Details Cutter head and suction dredger Cutter head and suction dredger

2007-02-28

2010-06-22

Beach, Thomas A (Department: 3671)

Excavating

Beneath a body of water

Rotary digger

C037S324000, C037S343000, C299S087100

Reexamination Certificate

active

07739812

ABSTRACT:
A cutter head for a cutter suction dredger to be mounted rotatably about a cutter head center axis with respect to a suction device for sucking up material cut loose by the cutter head from the bottom of a body of water, which cutter head includes a base ring, a boss spaced from the base ring in the direction of the center axis, and a plurality of arms which extend from the base ring to the boss and are distributed at regular intervals in the peripheral direction, each arm has a series of teeth located on the radially outermost parts of the arm and directed outwards at an angle with respect to the peripheral direction, the direction of rotation of the cutter head being set such that the teeth perform a cutting movement, with non-return mechanisms, preventing movement of cut material from the center axis to the exterior.

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