Compressed air dredge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 6, 1981
Grant Date -
N/A
app pub date -
May 2, 1979
filing date -
May 8, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compressed air dredge for removing gravel, sand, mud or the like from the sea floor is provided of the type including a compressor which is installed on a dredging ship having a vertically-disposed feed pipe and which, via a compressed air line, blows compressed air into the bottom end of the feed pipe so as to provide the required suction force. The dredge is characterized by the provision of at least two vertically disposed feed pipes, each of which is coupled to a separate compressor and each of which is provided with a separate compressed air line. The compressed air lines are coupled together via a coupling line having shut-off means for establishing and closing-off communication between the two compressed air lines. The compressed air lines are also each provided with separate shut-off means disposed in the flow direction of the compressed air in the compressed air line, downstream of the coupling line, for establishing and closing off communication between the compressed air line and its associated feed pipe.
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