Suction dredger with gas discharge chamber - has chamber maintaining water level above connection to intake pipe
NL8006053A
Suction dredger head with hinging visor - has valve controlling opening to outside depending on pressure difference
NL7904177A
Method for dredging substrate ground material and an apparatus for performing the method
NL7904079A
Floating hopper barge operating mechanism - lifts material to below water line and discharges from that level into hopper barge with underwater side access door(s)
NL7701257A
Process control device for use on a dredging equipment.
GB1510829A
Centrifugal pumps
GB1557203A
Cutting head for a cutter-suction dredger
DE2456784A1
Dredger for soft earth and sand - consists of suction pipe with cutting blade(s) at lower end and fluid outlets
NL7415416A
Rotary excavator head tooth - has front surface between plus and minus thirty degrees to rotor axis plane
