Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
  • B63B15/0083—Masts for sailing ships or boats
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
  • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
  • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
  • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
  • B63B2001/123—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls interconnected by a plurality of beams, or the like members only
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
  • B63B2015/0016—Masts characterized by mast configuration or construction
  • B63B2015/005—Masts characterized by mast configuration or construction with means for varying mast position or orientation with respect to the hull

Definitions

• the present invention relates to a device for varying the capsizing torque of a multihull.
• heel reduction devices are known for monohulls, they continue to be the subject of developments aimed at enabling their application to multihulls and at increasing their performance, in particular with a view to greater safety. in navigation for this type of ship and many other advantages which will be described later.
• the object of the invention is to propose a device intended to vary the capsizing torque of a multihull in which the efforts to be exerted by the crew during the straightening of the multihull are also minimized.
• the subject of the present invention is a device intended to vary the capsizing torque of a multihull consisting of at least two floats connected together by at least two beams designated respectively front link beam and rear link beam, characterized in that it comprises a geometric platform supporting a mast and a crew nacelle and in that said platform is mounted to slide transverse on the multihull to allow, depending on the balance sought by the crew, the movement of the mast and the crew nacelle from one edge to the other of the multihull.
• the geometrical platform is provided with sliding means of the carriage type capable of cooperating with a transverse guide rail mounted integrally on each of the beams of the multihull.
• the geometric platform also comprises means allowing its movement, of the hoist and sheet type, cooperating with the floats of the multihull.
• the platform comprises a central habitable structure.
• the geometric platform comprises a transverse beam cooperating with the rear connecting beam and a mast located substantially at the level of the front connecting beam.
• said platform comprises three attachment points arranged in an isosceles triangle whose base is parallel to the transverse beam of the platform, these three attachment points each being connected by a guy wire to the upper part of the mast thus ensuring adequate maintenance of the latter.
• these three attachment points represent the ends of a rigid star-shaped structure, the branching zone of the branches of which corresponds to the positioning zone of the mast and two of the three attachment points of which are located on the transverse beam of the geometric platform.
• This star structure is advantageously covered with a trampoline ensuring the geometric platform the shape of an isosceles triangle.
• Another object of the present invention relates to a multihull consisting of at least two floats connected together by at least two beams respectively designated front connecting beam and rear connecting beam equipped with a device intended to vary the capsizing torque according to the any of the above features.
• the lateral sliding means of the platform consist of a carriage disposed at the front of the platform substantially in line with the mast cooperating with a guide rail mounted on the front connecting beam and two rear carriages cooperating between the platform beam and the rear connecting beam.
• the means of displacement of the platform on one side or the other of the ship consist of a fixed hoist with double pulley on each float designated left and right hoist, a hoist central also with double pulley secured to the beam of the mobile platform and a single-strand sheet arranged on the pulleys of the different hoists so that an effort in one direction causes the displacement of the platform in the opposite direction.
• FIG. 1 is a side view of a catamaran equipped with a device according to the present invention
• FIGS. 2 to 4 are top views of the catamaran of FIG. 1 respectively in the normal position, in the extreme right position and in the extreme left position of the device according to the invention
• FIGS. 5 and 6 are front views respectively according to the positions of FIGS. 2 and 4,
• FIG. 7 is a schematic perspective view of a catamaran equipped with a device according to the present invention.
• FIG. 8 is a schematic rear view of the catamaran according to Figure 1 on which is shown a mechanism for moving the device, and
• FIG. 1 to 6 the representation of a multihull in this case a catamaran 12 conventionally consisting of two floats 9 coupled by two transverse connecting beams designated in the following respectively front connecting beam 6 and rear 8.
• This catamaran 12 is advantageously equipped with a device 14 intended to vary its capsizing torque consisting of the vélique force and the anti-drift force, forces subjected to the boat when it is sailing.
• this device 14 comprises a geometric platform 15 supporting a mast 1 and a crew nacelle 10, this platform 15 being mounted to slide transversely on the multihull 12 to allow, depending on the balance sought by the crew, the displacement of the mast 1 and of the crew nacelle 10 from one edge to the other of the multihull, thereby increasing or decreasing the couple of forces tending to capsize the ship.
• this geometric platform 15 is provided with sliding means, described in more detail in the following description, of the carriages type 7 and 16 capable of cooperating each with a transverse guide rail, not shown, mounted integrally on each beams 6 and 8 of the multihull.
• the geometric platform 15 comprises a transverse beam 4 cooperating with the rear connecting beam 6 of the catamaran 12 and a mast 1 located substantially in line with the front connecting beam 8 of the ship.
• said platform 15 has three attachment points A, B and C advantageously arranged in an isosceles triangle whose base is parallel to the transverse beam 4 of the platform 15, these three attachment points A, B and C each connected by a guy wire 13 at the top of the mast 1.
• these three fixing points A, B and C represent the ends of a rigid structure 3 in the shape of a star, the branching zone of the branches of which corresponds to the positioning zone of the mast 1 and two of which B and C of the three fixing points are located on the transverse beam 4 of the geometrical platform 15, as shown in FIGS. 2 to 4.
• This rigid star-shaped structure 3 further supports the symmetrical arrangement of a nacelle 10 or folding seats allowing the crew to sit down, as can be seen in FIG. 1.
• the geometric platform 15 can take different forms such as those shown diagrammatically in FIGS. 9 and 10, namely two perpendicular beams 17 and 18 or an arrangement of rigid beams 19 having the shape of a rectangle separated by a longitudinal beam 20, one of the ends of which constitutes one A of the three fixing points for the shrouds 13.
• Each of these structures as well as the star structure 3 is also covered with a trampoline 21 in order to allow possible movements of the crew.
• This trampoline 21 arranged on the structure 3 in order to form an isosceles triangle offers a large displacement surface for sailors compared to a conventional catamaran. It will also be noted that this displacement surface can be further increased by placing between the front connecting beams 8 and rear 6 a second trampoline 26.
• the platform 15 may also include a central living structure, not shown.
• the lateral sliding means of the platform 15 advantageously consist, as mentioned above, of a carriage 7 disposed at the front of the platform 15 substantially in line with the mast 1 cooperating with a guide rail (not shown) mounted on the front connecting beam 8 and two rear carriages 16 cooperating between the beam 4 of the platform 15 and the rear connecting beam 6, as visible in FIGS. 7 and 8.
• the means for moving the platform 15 to one side or the other of the ship are, for example, made up of a fixed double pulley hoist on each float 9 designated left hoist 22 and right hoist 23, a central hoist 24 also with double pulley secured to the beam 4 of the mobile platform 15 and a single-strand sheet 25 arranged, as explained in FIG. 8, on the pulleys of the different hoists 22, 23 and 24 so that an effort in one direction causes the movement of the platform 15 in the opposite direction.
• the crew When sailing, the crew, generally made up of four people, may decide, depending on the external conditions, i.e. the intensity of the wind, to move the platform 15 laterally by pulling on one on the sides of the sheet 25 in the desired direction of movement, thus displacing the center of gravity of the vessel 12 and consequently causing a reduction in the float 9 located in the wind or even its exit from the water, which decreases the surface of friction in light wind. Conversely, it will weigh down the same float 9 during stronger winds, in order to find the balance allowing the multihull 12 to increase its speed while retaining a large sail area.
• the external conditions i.e. the intensity of the wind
• the lateral displacement of the platform 15 and therefore of the mast 1 makes it possible to position the center of gravity of the boat equipped with such a device above the Archimedes thrust, canceling out by consequently the capsizing couple.
• a novice navigator will have greater ease in straightening his boat.
• the device according to the present invention allows the platform 15 to move at least half its width.
• the device according to the present invention mounted on a multihull namely a catamaran or a trimaran allows the use of this type of ship to a wider audience by making it more stable and more comfortable. than a classic multihull.
• this device makes it possible to adjust the weight / power / balance ratios, with the aim: to increase the power in strong wind, to balance the weights according to the wind force, to increase the power in the wind low, to shift the center of gravity to allow self-righting, to navigate comfortably, and to increase crew safety.
• the mast 1 can include different sails without departing from the scope of the invention.
• the displacement of the geometric shape can be effected by means of hydraulic cylinders or the like.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Wind Motors (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
• Adjustment And Processing Of Grains (AREA)
• Threshing Machine Elements (AREA)
• Transmission Devices (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8857947

Family Applications (1)

Country Status (7)

Family Cites Families (6)

• 2000
  • 2000-12-20 FR FR0016695A patent/FR2818237A1/fr not_active Withdrawn
• 2001
  • 2001-12-14 AU AU2002219303A patent/AU2002219303A1/en not_active Abandoned
  • 2001-12-14 WO PCT/FR2001/003990 patent/WO2002049909A1/fr active IP Right Grant
  • 2001-12-14 DE DE60119384T patent/DE60119384D1/de not_active Expired - Lifetime
  • 2001-12-14 AT AT01271305T patent/ATE325032T1/de not_active IP Right Cessation
  • 2001-12-14 US US10/451,301 patent/US20040094080A1/en not_active Abandoned
  • 2001-12-14 EP EP01271305A patent/EP1353839B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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