초록 ▼

The hull of a boat includes an opening which is closed by a door attached to the hull with a hinge and capable of limited pivoting motion on the hinge with a substantially horizontal axis of the pivot. In its upright first extreme position the door comprises a part of the hull. In a second folded d

The hull of a boat includes an opening which is closed by a door attached to the hull with a hinge and capable of limited pivoting motion on the hinge with a substantially horizontal axis of the pivot. In its upright first extreme position the door comprises a part of the hull. In a second folded down extreme position the door is substantially parallel with the water surface and can act as a loading platform and also as a stabilizer against wave action in rough waters.

대표청구항 ▼

The invention claimed is: 1. A boat comprising: a hull having an opening for placement of a door; power means for moving the boat in water; a deck; a door disposed in the opening of the hull in an upright position wherein it serves as part of the hull, said door being attached to the hull with a hi

The invention claimed is: 1. A boat comprising: a hull having an opening for placement of a door; power means for moving the boat in water; a deck; a door disposed in the opening of the hull in an upright position wherein it serves as part of the hull, said door being attached to the hull with a hinge that enables the door to be folded downward on a substantially horizontal axis, and means for allowing the door to be folded downward whereby the door may occupy a second position basically parallel with the surface of the water in which the boat may float, said second position being flexible relative to the deck whereby the door in its second position can pivot up and down relative to the deck in response to wave action, said means being also adapted for returning the door to the upright position whereby the door in its folded down position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform. 2. A boat in accordance with claim 1 having a plurality of openings for placement of one door in each opening, a plurality of doors each of which is disposed on one opening, is attached to the hull with a hinge that enables the door to be folded downward on a substantially horizontal axis, and means for allowing each door to be folded downward whereby each door may occupy the second position substantially parallel with the surface of the water in which the boat may float, said second positions being flexible relative to the deck whereby the doors in their second positions can pivot up and down relative to the deck in response to wave action, said means being also adapted for returning each door to the upright position whereby each door in its folded down position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform. 3. A boat in accordance with claim 1 wherein the means comprises a winch and a cable mechanism. 4. A boat in accordance with claim 1 additionally comprising limiting cable means for limiting downward folding of the door beyond a predetermined angle relative to the deck. 5. A boat comprising: a hull having an opening for placement of a door; power means for moving the boat in water; a deck; a door disposed in the opening of the hull in an upright position wherein it serves as part of the hull said door being attached to the hull with a hinge that enables the door to be folded downward on a substantially horizontal axis, and means for allowing the door to be folded downward whereby the door may occupy a position basically parallel with the surface of the water in which the boat may float, said means being also adapted for returning the door to the upright position whereby the door in its folded down position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform the hinge being located below the level of the deck. 6. A boat comprising: a hull having an opening for placement of a door; power means for moving the boat in water; a deck; a door disposed in the opening of the hull in an upright position wherein it serves as part of the hull said door being attached to the hull with a hinge that enables the door to be folded downward on a substantially horizontal axis; means for allowing the door to be folded downward whereby the door may occupy a position basically parallel with the surface of the water in which the boat may float said means being also adapted for returning the door to the upright position whereby the door in its folded down position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform, and further comprising means for moving the door up and down relative to the level of the deck, at the option of an operator, when said door is in a folded down position. 7. A boat in accordance with claim 6 wherein the means for moving the door up and down comprises a winch and a cable mechanism. 8. A boat in accordance with claim 7 wherein the means for moving the door up and down comprises a hydraulic mechanism. 9. A boat comprising: a hull having an opening for placement of a door, said hull having a stepped out portion in the area of said opening; power means for moving the boat in water; a deck; a hinge having a nominally horizontal axis and being attached to the stepped out portion of the hull; a door attached to the hinge, said door being capable of a first extreme position wherein it is upright and closes the opening in the hull, and a second extreme position wherein the door is folded down in a nominally horizontal position thereby creating an opening in the hull; means for lowering the door from the first extreme position to the second extreme position whereby the door in its second extreme position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform said second extreme position being flexible relative to the deck whereby the door in its second position can pivot up and down relative to the deck in response to wave action. 10. A boat in accordance with claim 9 wherein the means for lowering the door comprise a winch attached to the hull, a cable attached to and capable of being wound on the winch, said cable also being attached to the door. 11. A boat in accordance with claim 10 further comprising a limiting cable attached to the hull and attached to the door whereby the door is prevented of pivoting farther than the second extreme position. 12. A boat in accordance with claim 9 wherein the means for lowering the door from the first extreme position to the second extreme position is driven by electric power. 13. A boat comprising: a hull having an opening for placement of a door; said hull having a stepped out portion in the area of said opening; power means for moving the boat in water; a deck; a hinge having a nominally horizontal axis and being attached to the stepped out portion of the hull; a door attached to the hinge, said door being capable of a first extreme position wherein it is upright and closes the opening in the hull, and a second extreme position wherein the door is folded down in a nominally horizontal position thereby creating an opening in the hull; means for lowering the door from the first extreme position to the second extreme position whereby the door in its second extreme position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform and means for moving the door up and down relative to the level of the deck, at the option of an operator, when said door is in its second extreme position. 14. A boat in accordance with claim 13 wherein the means for moving the door up and down comprises a winch and a cable mechanism. 15. A boat in accordance with claim 13 wherein the means for moving the door up and down comprises a hydraulic mechanism. 16. A boat in accordance with claim 13 wherein the means for moving the door up and down is driven by electric power. 17. In a boat having a hull, power means for moving the boat in water and a deck, the improvement comprising: a door placed into an opening in the hull; the hull having a stepped out portion in the area of said opening a hinge having a nominally horizontal axis and being attached to the stepped out portion of the hull, said door being attached to the hinge and capable of a first extreme position wherein it is upright and closes the opening in the hull, and a second extreme position wherein the door is folded down in a nominally horizontal position thereby creating an opening in the hull; means for lowering the door from the first extreme position to the second extreme position whereby the door in its second extreme position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform said second extreme position being flexible relative to the deck whereby the door in its second position can pivot up and down relative to the deck in response to wave action. 18. The improvement in accordance with claim 17 wherein the means for lowering the door comprise a winch attached to the hull, a cable attached to and capable of being wound on the winch, said cable also being attached to the door. 19. The improvement in accordance with claim 18 further comprising a limiting cable attached to the hull and attached to the door whereby the door is prevented of pivoting farther than the second extreme position. 20. The improvement in accordance with claim 18 wherein the means for lowering the door from the first extreme position to the second extreme position is driven by electric power. 21. In a boat having a hull, power means for moving the boat in water and a deck the improvement comprising: a door placed into an opening in the hull; the hull having a stepped out portion in the area of said opening a hinge having a nominally horizontal axis and being attached to the stepped out portion of the hull said door being attached to the hinge and capable of a first extreme position wherein it is upright and closes the opening in the hull; and a second extreme position wherein the door is folded down in a nominally horizontal position thereby creating an opening in the hull; means for lowering the door from the first extreme position to the second extreme position whereby the door in its second extreme position is capable of acting as a stabilizer for the boat against wave action and of serving as a loading platform; said means for lowering the door comprising a winch attached to the hull a cable attached to and capable of being wound on the winch; said cable also being attached to the door, and means for moving the door up and down relative to the level of the deck at the option of an operator when said door is in its second extreme position. 22. The improvement in accordance with claim 21 wherein the means for moving the door up and down comprises a winch and a cable mechanism. 23. The improvement in accordance with claim 21 wherein the means for moving the door up and down comprises a hydraulic mechanism. 24. A boat in accordance with claim 21 wherein the means for moving the door up and down is driven by electric power.