Compressed air dredge

Details Compressed air dredge Compressed air dredge

1979-05-02

1981-10-06

Crowder, Clifford D.

Excavating

Peat excavators

55DIG17, 137567, 417426, F04F 108, F04F 110, E02F 388

Patent

active

042927471

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.

REFERENCES:
patent: 3252270 (1966-05-01), Pall et al.
patent: 3982399 (1976-09-01), Rookey
Trane Refrigeration Manual, Chapter VI "Multiple Compressor Systems", pp. 17-20, Copyright 1946.

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