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| Number | Title | Issue Date |
| 5809922 | Transportation of submerged cargo A shipshaped vessel adapted to transport cargo, in an arrangement: to retard free fall of slurry kind cargo loading pivotally mounted clamshell bucket halves, to transport slurry in clamshell buckets immersed below sea surface, to moor above a ballast-lad... | 09/22/1998 |
| 5095851 | Method and apparatus for mariculture utilizing converted hopper barges or the like A new and unique method and apparatus for the farming of redfish and the like. The exemplary embodiment of the present invention teaches an apparatus comprising a converted hopper barge retrofitted to allow circulation of water surrounding the vessel with... | 03/17/1992 |
| 5012754 | Open-bottom gravel dump boat A hull construction of a cargo carrier vessel, with self-propelling capacity, capable of carrying earth, sand, quarried stones and so forth and of disposing of them from the bottom is disclosed. While the bottom (11) is released, the hold forms a double-h... | 05/07/1991 |
| 4644888 | Floating hopper barge with discharging trap doors in the bottom A hopper vessel for storing bulk material such as dredged material, has one or more holds. The holds in their bottom are provided with trap doors that open by moving downwardly below the bottom of the vessel. In shallow water, there is the risk that these... | 02/24/1987 |
| 4549497 | Device for underwater sealing ports or similar, notably the bottom traps from hopper barges There is described a device for underwater sealing ports or similar, whereby sliding panels are shifted along discharge openings, in which rubber sections are mounted about said discharge openings, in frames secured to a vessel side, and means are provide... | 10/29/1985 |
| 4548147 | Hopper barge with bottom flaps and a suction channel Hopper barge comprising one or more cargo spaces and a series of discharge openings in the bottom of the hold. Each opening comprises a bottom flap which in the downwards displaced position realizes a connection between the hold through the respective dis... | 10/22/1985 |
| 4502405 | Floating device comprising storage holds for bulk freight, such as a hopper dredge A floating device such as a hopper dredge having bottom valves (4-11) for discharging the holds (2), which holds according to the invention can be closed airtight and are provided with apparatus (18) to generate an overpressure within the holds (2), the b... | 03/05/1985 |
| 4287432 | Valve position detecting apparatus A hopper valve module is adapted to be removably mounted in the well of a hopper of a hopper dredge vessel and includes a housing and a valve member movable with respect to the housing for opening and closing the hopper outlet. A transmitter tube containi... | 09/01/1981 |
| 4173935 | Dump scow A barge or scow for transferring refuse from a collection site to a disposal site has an elongated open hold or cavity with a flat bottom sloping downward from a shallow end of the cavity to a deep end where a cargo-discharge gate is located. A number of ... | 11/13/1979 |
| 4120409 | Hopper barge having a bottom discharge opening closable by hopper doors Hopper barge comprising a hopper having at least one center keelson box and at least one bottom discharge opening closable by at least one swivelling hopper door, as well as a control mechanism for the hopper door, wherein along the longitudinal edge of t... | 10/17/1978 |
| 4104979 | Hopper barge having a bottom discharge opening closed by hopper doors A hopper barge comprising a hopper having at least one center keelson box and at least one bottom discharge opening closable by at least one swivelling hopper door, as well as a control mechanism for swivelling the hopper door, wherein the control mechani... | 08/08/1978 |
| 4084527 | Hopper barge bottom seal construction A hopper barge bottom seal construction comprises a barge having a first and second pivotal part which extend longitudinally and are oriented with their lower ends extending obliquely together but spaced apart at their lower ends. A seal is provided below... | 04/18/1978 |
| 3990379 | Dredging apparatus A marine dredging apparatus has a dredging aggregate that is connected to the surface by means of a plurality of articulatedly interconnected rigid pipe sections that can be wound up on a prismatic reel that in turn is disposed on, in or around a vessel. ... | 11/09/1976 |
