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Title:
A BOAT
Document Type and Number:
WIPO Patent Application WO/2011/159156
Kind Code:
A2
Abstract:
A boat comprising a hull and a wing-shaped section extending outward from said hull, which is characterised in that the wing-shaped section is provided with several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming an enveloping flexible outer wall of the wing-shaped section between a first position, in which the wing-shaped section generates a force on the boat in a first direction, and a second position, in which the wing-shaped section generates a force on the boat in a second direction opposite the first direction.

Inventors:
BINKHORST, Marcel, Adriann (Ridderspoort 48, TG Zwaag, NL-1689, NL)
Application Number:
NL2011/050431
Publication Date:
December 22, 2011
Filing Date:
June 15, 2011
Export Citation:
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Assignee:
BINKHORSTDESIGN BEHEER BV (Ridderspoor 48, TG Zwaag, NL-1689, NL)
BINKHORST, Marcel, Adriann (Ridderspoort 48, TG Zwaag, NL-1689, NL)
International Classes:
B63B39/06
Domestic Patent References:
WO2010050905A22010-05-06
Foreign References:
JPS5755284A1982-04-02
FR2344441A11977-10-14
Attorney, Agent or Firm:
HOOIVELD, Arjen, Jan, Winfried (Sweelinckplein 1, GK Den Haag, NL-2517, NL)
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Claims:
A boat comprising a hull and a wing-shaped section extending outward from said hull, characterised in that the wing-shaped section is provided with several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming an enveloping flexible outer wall of the wing-shaped section between a first position, in which the wing-shaped section generates a force on the boat in a first direction, and a second position, in which the wing-shaped section generates a force on the boat in a second direction opposite the first direction.

A boat according to claim 1, wherein the wing-shaped section is also deformable to a third (intermediate) position, in which the wing-shaped section generates neither a force in the first direction nor a force in the second direction on the boat.

A boat according to claim 1 or 2, wherein the boat is provided with computer-controlled control means, which control the deformation of the wing-shaped section.

A boat according to claim 1, 2 or 3, wherein the wing-shaped section can be steplessly deformed between said first and said second position.

A boat according to any one of the preceding claims 1 - 4, wherein the wing-shaped section forms a downwardly extending rudder, wherein the wing-shaped section is located below the water surface while sailing, wherein the wing-shaped section is deformable, depending on a steering direction of the boat, between the first position, in which the wing-shaped section generates a lateral force to starboard while sailing, and the second position, in which the wing-shaped section generates a lateral force to port while sailing, whilst the wing-shaped section is also deformable to the (intermediate) third position, in which the wing-shaped section generates neither a lateral force to starboard nor a lateral force to port while sailing.

A boat according to claim 5, wherein the boat is provided with the control means that control the deformation of the wing-shaped section in dependence on the steering direction of the boat.

A boat according to any one of the preceding claims 1 - 6, whose hull is provided on either side thereof with wing-shaped sections that extend sideways from the hull, which wing-shaped sections form stabilisers and which counteract an inclination of the boat caused by the forces of the wind, wherein said wing-shaped sections are located below the water surface while sailing, each wing-shaped section being deformable, in dependence on the inclination of the boat caused by the forces of the wind, between the first position, in which the wing-shaped section generates an upward force while sailing, and the second position, in which each wing-shaped section generates a downward force while sailing, whilst each wing-shaped section is also deformable to the (intermediate) third position, in which the wing-shaped section generates neither an upward force nor a downward force while sailing. A boat according to claim 7, wherein the starboard wing-shaped section and the port wing-shaped section are in the third position in the situation in which the boat neither heels over to starboard nor to port while sailing.

A boat according to claim 7 or 8, wherein the starboard wing-shaped section is in the first position and the port wing-shaped section is in the second position in the situation in which the boat heels over to starboard while sailing .

A boat according to claim 7, 8 or 9, wherein the starboard wing-shaped section is in the second position and the port wing-shaped section is in the first position in the situation in which the boat heels over to port while sailing .

A boat according to any one of the preceding claims 7 - 10, wherein the boat is provided with the control means that control the deformation of the wing-shaped sections in dependence on the inclination of the boat caused by the forces of the wind.

A boat according to any one of the preceding claims 1 - 11, wherein the wing-shaped section has a round wing nose, seen in sectional view, which faces toward a bow of the boat.

A boat according to any one of the preceding claims 1 - 12, wherein the wing-shaped section has a flat wing tail, seen in sectional view, which faces toward a stern of the boat.

A rudder which extends downward from a hull of a boat, characterised in that the rudder comprises a wing-shaped section, which wing-shaped section comprises several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming the enveloping flexible outer wall of the wing-shaped section, in dependence on the steering direction of the boat, between a first position, in which the wing-shaped section generates a lateral force to starboard, and a second position, in which the wing-shaped section generates a lateral force to port, whilst the wing-shaped section is also deformable to an (intermediate) third position, in which the wing-shaped section generates neither a lateral force to starboard nor a lateral force to port while sailing.

A stabiliser which counteracts an inclination of the sailboat caused by forces of the wind in a sail thereof, characterised in that the stabiliser comprises a wing-shaped section, which wing-shaped section comprises several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming an enveloping flexible outer wall of the wing-shaped section between a first position in dependence on the inclination of the boat caused by wind forces, between a first position, in which the wing-shaped section generates an upward force, and the second position, in which each wing-shaped section generates a downward force while sailing, whilst the wing-shaped section is also deformable to the

(intermediate) third position, in which the wing-shaped section generates neither an upward force nor a downward force while sailing.

Description:
A BOAT

The invention relates to a boat comprising a hull and a wing-shaped section extending outward from said hull.

The invention relates to any type of boat, i.e. motorboats, sailboats, submarines, etc. If the boat is a sailboat, it will furthermore comprise a mast extending upward from a deck, to which a sail is connected.

Such a boat in the form of a sailboat is known from the prior art, as in particular formed by International patent publication WO 2010/050905 (Tomaz Grom) . A sailboat is powered by the wind, which blows in the sail or sails of the sailboat. The dimensions and the shape of the sailboat, in combination with the type of wind, determine the total required area of the sail or sails. The wind-powered sailboat can reach its highest speed if an optimum is found as regards the dimensions and the shape of the sailboat on the one hand and the dimensions and the configuration of the sail or the sails on the other hand. In the case of motorboats such an optimum is not of importance, since motorboats are driven by a motor. A rudder extending into the water, however, has a braking effect in motorboats as well as in sailboats because of its resistance in the water, and thus adversely affects the speed of the boat.

The object of the invention is to improve the prior art, i.e. to provide a boat in which the above drawbacks are eliminated. In order to accomplish that object, a boat of the kind described in the introduction is according to the invention characterised in that the wing-shaped section is provided with several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming an enveloping flexible outer wall of the wing-shaped section between a first position, in which the wing-shaped section generates a force on the boat in a first direction, and a second position, in which the wing-shaped section generates a force on the boat in a second direction opposite the first direction. The eccentrically driven shafts therefore abut against the flexible outer wall of the wing-shaped section with their outer surface, so that rotation of the shafts will directly result in a change in the shape of the outer wall of the wing-shaped section (the "skin" of the section) . Preferably, the wing-shaped section is also deformable to a third (intermediate) position, in which the wing-shaped section generates neither a force in the first direction nor a force in the second direction on the boat. The boat is in particular provided with

computer-controlled control means, which control the

deformation of the wing-shaped section, preferably steplessly so. In another preferred variant other types of control means are used, for example manually controlled control means.

The shafts may be hydraulically, pneumatically, electrically or mechanically driven. The wing-shaped section in particular has a round wing nose, seen in cross-sectional view, which faces toward a bow of the boat, as well as a flat wing tail, which faces toward a stern of the boat . In a preferred embodiment of the boat according to the invention, the wing-shaped section forms a downwardly extending rudder, wherein the wing-shaped section is located below the water surface while sailing, wherein the wing-shaped section is deformable , depending on a steering direction of the boat, between the first position, in which the wing-shaped section generates a lateral force to starboard while sailing, and the second position, in which the wing-shaped section generates a lateral force to port while sailing, whilst the wing-shaped section is also deformable to the (intermediate) third position, in which the wing-shaped section generates neither a lateral force to starboard nor a lateral force to port while sailing. In said "neutral" position, no lateral force at all is generated, therefore. The deformability leads to a reduced resistance of the rudder in the water while sailing. As a result, fuel can be saved and/or a higher speed can be attained while sailing.

It is noted that the term "steering direction" is also understood to mean the degree to which the boat is being steered to starboard or to port {"right/left").

The boat is preferably provided with the control means that control the deformation of the wing-shaped section in dependence on the steering direction of the boat. In other words, such a control arrangement provides a deformation of the wing-shaped section and, as a result thereof, the generation of lateral forces that make it possible to steer the boat to starboard, to port or straight ahead.

In another preferred embodiment of a boat according to the invention, the hull is provided on either side thereof with wing-shaped sections that extend sideways from the hull, which wing-shaped sections form stabilisers and which counteract an inclination of the boat caused by the forces of the wind, wherein said wing-shaped sections are located below the water surface while sailing, each wing-shaped section being deformable, in dependence on the inclination of the boat caused by the forces of the wind, between the first position, in which the wing-shaped section generates an upward force while sailing, and the second position, in which each wing-shaped section generates a downward force while sailing, whilst each wing-shaped section is also deformable to the (intermediate) third position, in which the wing-shaped section generates neither an upward force nor a downward force while sailing.

As indicated in the foregoing, a wind-powered sailboat can reach its highest speed if an optimum is found as regards the dimensions and the shape of the sailboat on the one hand and the dimensions and the configuration of the sail or the sails on the other hand. However, the wind force will cause the sailboat to heel over and push it sideways while sailing (this effect is also referred to as "lateral drift"), as a result of which the sailboat will get off course. It will be understood that any inclination of the sailboat while sailing will have a negative effect on the speed of the sailboat, as the effective area of the sail or sails on which the wind can exert its force will be reduced as a result of said inclination. In the aforesaid international patent publication WO 2010/050905 it is proposed to equip the sailboat with fins functioning as stabilisers on either side of the hull, which fins extend sideways from the hull. Said fins function to stabilise the sailboat, therefore, that is, they must counteract the aforesaid inclination of the sailboat caused by the forces of the wind in a sail or sails thereof. Said prior art sailboat furthermore comprises a keel. Such a keel functions to counteract the aforesaid phenomenon of lateral drift, whilst in many cases the keel is weighted. The sailboat will thus have a greater stability because of the weight increase at the location of the bottom of the sailboat. The additional weight of the keel results in a greater resistance in the water, however, as a result of which the speed of the sailboat is reduced. Ά drawback of the sailboat according to the aforesaid international patent publication WO 2010/050905 is that the stabilising effect achieved by the fins proposed therein has been found to be insufficient in practice. Another drawback is the fact that said fins experience a relatively high resistance in the water, which further reduces the speed of the sailboat.

While sailing, the wing-shaped sections according to the invention generate a force in upward or downward direction on the sailboat, depending on whether the convex surface of the wing-shaped sections faces toward the water surface or away therefrom, so that the above-explained inclination of the sailboat is effectively counteracted. Thus, a stable sailboat is provided, which will hardly heel over, if at all, as a result of the forces of the wind blowing in the sail or the sails while sailing, without this having an adverse effect on the speed of the sailboat.

In a preferred embodiment of a boat according to the invention, the starboard wing-shaped section and the port wing-shaped section are in the third position in the situation in which the boat neither heels over to starboard nor to port while sailing. In this position the sailboat need not be stabilised by the wing-shaped sections, since it does not exhibit any inclination, so that the mast of the sailboat takes up an upright position relative to the water surface.

In another preferred embodiment of a boat according to the invention, the starboard wing-shaped section is in the first position and the port wing-shaped section is in the second position in the situation in which the boat heels over to starboard while sailing. Stabilisation of the sailboat exhibiting an inclination to the starboard side thus takes place by an upward force on the starboard side and a downward force on the port side.

In another preferred embodiment of a boat according to the invention, the starboard wing-shaped section is in the second position and the port wing-shaped section is in the first position in the situation in which the boat heels over to port while sailing. Stabilisation of the sailboat exhibiting an inclination to the port side is now realised by an upward force on the port side and a downward force on the starboard side.

In another preferred embodiment of the boat according to the invention, the boat is provided with the computer-controlled control means that control the deformation of the wing-shaped sections in dependence on the inclination of the boat caused by the forces of the wind. In other words, such a control arrangement provides a deformation of the wing-shaped section and, as a result thereof, a generation of upward and downward forces that make it possible to stabilise the sailboat in situation in which the sailboat heels over to starboard or to port.

The invention also relates to a rudder which extends downward from a hull of a boat, which is characterised in that the rudder comprises a wing-shaped section, which wing-shaped section comprises several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming the enveloping flexible outer wall of the wing-shaped section, in dependence on the steering direction of the boat, between a first position, in which the wing-shaped section generates a lateral force to starboard, and a second position, in which the wing-shaped section generates a lateral force to port, whilst the wing-shaped section is also deformable to an (intermediate) third position, in which the wing-shaped section generates neither a lateral force to starboard nor a lateral force to port while sailing. The invention also relates to an elevator in particular for a submarine, which elevator comprises a wing-shaped section as described in the foregoing, but which is capable of being deformed so as to generate forces, for example in horizontal direction.

The invention also relates to a stabiliser which counteracts an inclination of the sailboat caused by forces of the wind in a sail thereof, which is characterised in that the stabiliser comprises a wing-shaped section, which wing-shaped section comprises several eccentrically driven shafts having mutually different, circular cross-sections, which shafts jointly define the contour of the wing-shaped section and which, by rotating, are capable of deforming an enveloping flexible outer wall of the wing-shaped section between a first position in dependence on the inclination of the boat caused by wind forces, between a first position, in which the wing-shaped section generates an upward force, and the second position, in which each wing-shaped section generates a downward force while sailing, whilst the wing-shaped section is also deformable to the (intermediate) third position, in which the wing-shaped section generates neither an upward force nor a downward force while sailing.

The invention will now be explained in more detail with reference to figures illustrated in a drawing, in which

- Figure 1 is a side view of a prior art sailboat,

- Figures 2 and 3 are a schematic rear view and a schematic perspective view, respectively, of a sailboat according to the invention, with figure 2 only showing the stern of the sailboat;

- Figure 4 shows several schematic side views of a wing-shaped section as used in the sailboat of figures 2 and 3;

- Figure 5 is a schematic perspective view of a rudder according to the invention as used in the sailboat of figure 1; and

— Figure 6 shows several schematic top plan views of a wing shaped section as used in the rudder of figure 2.

In figure 1 there is shown a sailboat 1 according to the prior art, which sailboat 1 has a hull 2, a mast 4 extending upward from a deck 3, to which two sails 5, 6 are connected, as well as two keels 7, 8 extending downward from the hull 2. As already explained in the foregoing, the wind force will cause the sailboat 1 to heel over and push it sideways. As a result, the sailboat will be driven off course. As a result of said heeling over, the effective area of the sails 5, 6 on which the wind can exert its force is reduced. This has an adverse effect on the attainable speed of the sailboat 1.

In figures 2 and 3, like parts of the sailboat 1 according to the invention are indicated by the same numerals. With reference to the left-hand drawing in figure 2, the sailboat 1 is propelled by the wind W, which blows in the direction indicated by the arrows. This will cause the sailboat 1 to heel over to starboard. The sailboat 1 can be stabilised, i.e. the inclination of the sailboat 1 can be counteracted, by generating and upward force F2 on the starboard side and a downward force F3 on the port side. In the right-hand drawing of figure 2, the opposite situation is shown, viz. the situation in which the sailboat 1 is propelled by a wind that blows in the opposite direction as indicated by the arrows. The sailboat 1 will now heel over to port . The inclination can in that case be compensated by generating a downward force F3 on the starboard side and an upward force F on the port side. In other words, in each case a moment of force is generated for stabilising the sailboat 1. According to the invention, said stabilisation is realised by two wings 9, 10, which extend sideways on either side of the hull 2. As shown, the wings 9, 10 are located below the water surface 11.

Figure 3 is a more detailed, perspective view of the right-hand drawing of figure 2, in which only the stern of the sailboat 1 is shown. The sailboat 1 is propelled with a forward force Fl by the wind W. While sailing, the wings 9, 10 generate a force F2, F3 in upward or downward direction on the sailboat 1, depending on whether the convex surface 12, 13 of the wings 9, 10 faces towards the water surface 11 or away therefrom. In the situation shown in figure 3 this means that the convex surface 12 of the wing 9 on the port side faces upward and that the convex surface 13 on the starboard side faces downwards. This is shown in detail cross-sectional view to the left and to the right of figure 3. As shown, the round wing knows of the two wings 9, 10 faces towards a bow of the sailboat 1, and the flat wing tail of the two wings 9, 10 faces toward a stern of the sailboat 1.

In a preferred variant, in order to obviate the need to connect the wings 9, 10 in a correct orientation of their convex surfaces 12, 13 to the holder 2 of the sailboat 1, the wings 9, 10 are deformable. This is shown in figure 4. The wings 9, 10 are deformable between a first position A, in which the wing 9, 10 generates an upward force F2 (the convex surface 12, 13 thereof faces toward the water surface 11 in that position) , and a second position C, in which the wing 9, 10 generates an downward force F3 (the convex surface 12, 13 thereof faces away from the water surface 11 in that position) . The wing 9, 10 is in particular also deformable to an (intermediate) further position B, in which the wing 9, 10 generates neither an upward force F2 nor a downward force F3. The deformation is effected by electronically actuated, eccentrically driven shafts 14, which abut against the flexible outer wall 16 of the wing 9, 10 with their outer surface 15. As shown, rotation of the shafts 14 in the direction of the arrows will thus directly result in a change in the shape of the outer wall 16 of the wing 9, 10.

In figures 5 and 6 corresponding parts of the sailboat 1 according to the invention are indicated by the same numerals. With reference to figure 5, the rudder 17 has the shape of a wing 10. While sailing, the wing 10 generates a force on the sailboat 1 in lateral direction either to starboard or to port, or straight ahead, depending on whether the convex surface of the wing 10 is directed to starboard (A) or port (B) or is present both on the starboard side and on the port side (C) . In other words, in case (A) the sailboat will steer in starboard direction, in case (B) it will steer in port direction and in case (C) it will steer straight ahead. As shown, the round wing nose of the wing 10 faces toward a bow of the sailboat 1 and the flat wing tail of the wing 10 faces toward a stern of the sailboat 1.

With reference to figure 6, the wing 10 is deformable between a first position A, in which the wing 10 generates a lateral force F2 (the convex surface thereof faces toward the starboard side in that position) , and a second position C, in which the wing, 10 generates a lateral force F3 (the convex surface thereof faces toward the port side in that position) . The wing 10 is also deformable to an (intermediate) third position B, in which the wing 10 generates neither a lateral force F2 nor a lateral force F3. The deformation is effected by driven, eccentric shafts 11, which abut against the flexible outer wall 13 of the wing 10 with their outer surface 12. Rotation of the shafts 11 will thus directly result in a change in the shape of the outer wall 13 of the wing 10.

The invention is not limited to the embodiments as described above, but it also extends to other preferred variants that fall within the scope defined in the appended claims. Thus it will be apparent to those skilled in the art that the invention is not limited to the use thereof in a sailboat, but that it can be used in any type of boat, motorboats included.