Wave compensating system for suction dredgers

Details Wave compensating system for suction dredgers Wave compensating system for suction dredgers

1974-09-23

1976-04-13

Crowder, Clifford D.

Excavating

Peat excavators

37 72, 175 5, 188314, 254172, 2541757, 267125, E02F 388

Patent

active

039494969

ABSTRACT:
A suction dredger, comprising a vessel and a suspension conveying conduit provided with a pump and having a nozzle suspended by means of at least one cable of a lifting device on the vessel is improved for preventing breaking of the cable or damage of other dredger parts. To this aim the lifting device comprises a cable length variator delivering cable and each time hauling essentially all delivered cable in work condition with a high cable tension being lower than the inadmissible cable tension, but being higher than a predetermined low cable tension, in order to prevent an inadmissible cable tension during a downward ground reaction upon the nozzle.

REFERENCES:
patent: 3512281 (1970-05-01), Hadjidakis
patent: 3579872 (1971-05-01), Jantzen
patent: 3596070 (1971-07-01), McCool et al.
patent: 3606854 (1971-09-01), Van Lunteren
patent: 3653635 (1972-04-01), Bates, Jr. et al.
patent: 3681862 (1972-08-01), De Koning et al.
patent: 3734564 (1973-05-01), McKay et al.
patent: 3739503 (1973-06-01), Barker et al.

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