Patent ID: 6145223
Filing Date: 2000-11-14
Classification: E02F

Abstract:
A dredging apparatus for performing work on a seabed, said dredging apparatus comprising:a drive motor;a pumping device;an ejector having a pipe bend portion with a first end connected to an outlet of said pumping device and a second narrowed outlet end forming a nozzle and passing down and into a pressure portion of said ejector, wherein said drive motor operates the pumping device and said pumping device delivers a forced water flow to said pressure portion of said ejector to maintain an axially extending waterjet towards an outlet end of said ejector;a suction pipe connected to an inlet end of said ejector, upstream of said pressure portion of said ejector, said suction pipe having an inlet portion for sucking in materials on the seabed, wherein said materials are sucked into said pressure portion of said ejector upstream of said axially extending waterjet;an outlet transfer pipe connected to said outlet end of said ejector, wherein said suction pipe, said ejector pressure portion and said outlet transfer pipe form a continuous bore for transferring materials from one location on a seabed to a second location and,wherein said ejector, the pumping device, and the drive motor form an integral unit.