Open-bottom gravel dump boat
AssigneeMarusen Co., Ltd.
InventorToshifumi Mori
Life of this patent
Estimating the term…
Abstract
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-hull construction with side walls (12). A pair of right and left doors, each with an L-shaped section, is provided. The upper part of each door is connected by hinges to outsides of the side walls of said hold. The doors curve and extend along the released bottom. Cargo is carried in the hold (1). Furthermore, a door structure to dispose of cargo from the released bottom into the sea by releasing it to the right and left and equipment to open and close the pair of doors, located at the front and back of the door structure, is provided.
Claims10
A hopper barge hull construction comprising:
- a single body structure having a stem section, a stern section and a side wall section therebetween, said side wall section forming a hold having an outlet defined in a bottom portion thereof for discharge of cargo, the stem section and the stern section having a closed bottom and the outlet in the side wall section being located between the stem section and the stern section;
- a pair of L-shaped doors for closing the outlet in the side wall section, said doors being movable between an open position opening the outlet and a closed position closing the outlet, each door having a forward side adjacent the stem section and a rearward side adjacent the stern section each L-shaped door having a first leg which closes the opening when in the closed position, and a second leg positioned laterally outwardly of the side wall section;
- hinge means for pivotably attaching each of the doors of the pair of doors to the side wall section;
- and
- drive means for pivoting the doors between the open position and the closed position, said drive means being provided at least at one of a position near the forward and rearward sides of the pair of doors.
Dependencies are inferred from the claim text.