Telescopic mast for a sail-powered vessel

Abstract

The invention relates to a telescopic mast device (1) for a sail-powered vessel, the telescopic mast device (1) being erected along a specific elongation axis (O1) and including: - a stationary section (11) intended to be positioned above an upper deck (42) of the vessel; - a plurality of movable sections (10, 10A, 10B) coaxial with the stationary section (11), each upper movable section (10, 10A, 10B)—referred to as upper section (10B)—being slidably mounted in the movable section (10, 10A, 10B), which is directly lower—referred to as lower section (10A)—relative to the specific elongation axis (O1) of the mast; - angular indexing elements (2) configured to constrain a rotation of each upper section (10B) with respect to the lower movable section (10, 10A, 10B) located opposite, relative to the specific elongation axis (O1), the angular indexing elements (2) including at least one indexing shim (22) secured to an upper portion (102) of the upper section (10B), the at least one indexing shim (22) collaborating with at least one indexing rail (21) secured to the lower section (10A) located opposite the at least one indexing shim (22).

Description

[0001] Description

[0002] Title of the invention: Telescopic mast for a sail-powered vessel

[0003]

[0001] The technical context of the present invention is that of devices equipping wind-powered vessels. More particularly, the invention relates to a telescopic mast for a wind-powered vessel.

[0004] [2] In the current state of the art, and particularly with regard to known sail-powered vessels, certain situations require dismantling the mast of such sail-powered vessels, for example, to tow them or to allow them to pass under a low bridge. Such situations lead to complex maneuvers that are not feasible for everyone.

[0005] [3] We also know of sail-powered vessels equipped with inflatable sails. Such inflatable sails have a double skin with an aerodynamic profile resembling that of an airplane wing. Known inflatable sails thus define an internal cavity between a first skin layer forming the lower surface (intrados) and a second skin layer forming the upper surface (extrados). The internal cavity is inflated and kept under positive pressure to maintain the aerodynamic profile of such an inflatable sail.

[0006] [4] Such inflatable sails are - in a known manner - associated with telescopic masts which allow the sail to be lowered or, on the contrary, raised and thus allow sail-powered vessels to be adapted to different wind conditions. The known telescopic masts are erected along an axis of self-elongation and comprise a fixed section intended to be positioned above or below an upper deck, and a plurality of movable sections coaxial with the fixed section, each upper movable section - called the upper section - being mounted to slide within the movable section directly below it - called the lower section - relative to the mast's axis of self-elongation.

[0007] [5] Thus, each movable section can slide relative to the directly adjacent movable section by means of a lifting system—automatic, synchronized, or asynchronous—which is not addressed here in the context of the present invention. [6] The drawbacks of known masts lie in the presence of residual mobility between the different movable sections, particularly during the mast deployment or retraction phases. This residual mobility takes, for example, the form of torsional play around the elongation axis of the known masts, leading to the appearance of torsional forces between the different movable sections. Consequently, this residual mobility can lead to blockages during the deployment or retraction phases of the known masts.

[0008] [7] The present invention aims to provide a new telescopic mast device to address at least largely the previous problems and to lead to further advantages.

[0009] [8] Another aim of the invention is to reduce the internal mobilities of the telescopic mast device, and in particular its torsional play between the different moving sections.

[0010] [9] Another object of the invention is to make such a telescopic mast device more robust.

[0011]

[0010] Another object of the invention is to make such a telescopic mast device more reliable.

[0012]

[0011] According to a first aspect of the invention, at least one of the aforementioned objectives is achieved with a telescopic mast device for a sail-powered vessel, the telescopic mast device being erected along its own axis of extension and comprising:

[0013]

[0012] - a fixed section intended to be attached to an upper deck of the ship;

[0014]

[0013] - a plurality of movable sections coaxial with the fixed section, each upper movable section - called upper section - being mounted sliding in the directly lower movable section - called lower section - relative to the proper axis of elongation of the mast;

[0015]

[0014] - angular indexing elements configured to limit the amplitude of a rotation between an upper section and a lower moving section located opposite it, relative to the axis of proper elongation.

[0016]

[0015] In the telescopic mast device according to the first aspect of the invention, the angular indexing elements comprise at least one indexing wedge attached to an upper part of the upper section, at least one indexing wedge collaborating with at least one indexing rail attached to the lower section located opposite said at least one indexing wedge.

[0017]

[0016] In the context of the present invention, the adjective radial refers to a direction perpendicular to the axis of proper elongation. The adjective longitudinal refers to a direction parallel to the axis of proper elongation. Consequently, the adjectives superior and inferior refer, relative to the axis of proper elongation, to a high position and a low position, respectively.

[0018]

[0017] In the context of the present invention, the fixed section is intended to be fixed by embedding it to the upper deck of the ship, above or below it.

[0019]

[0018] In the context of the present invention, each moving section takes the form of a hollow cylindrical bearing surface extending straight parallel to the axis of natural elongation. Each moving section is preferably delimited by a circular profile. This advantageous configuration simplifies the manufacturing processes of these moving sections and reduces their manufacturing costs. The hollow cylindrical bearing surface of a moving section is delimited by an inner contour and an outer contour. The thickness of the moving section—measured along a direction perpendicular to the axis of natural elongation and between the inner and outer contours—is advantageously constant along the axis of natural elongation. In other words, each moving section preferably has a constant thickness.In contrast, all the moving sections forming the telescopic mast assembly are either of the same thickness or of different thicknesses. In the latter case, the upper sections may be thinner than the lower sections.

[0020]

[0019] Furthermore, the telescopic mast device according to the invention comprises a plurality of movable sections, all engaged concentrically in pairs. Thus, each movable section is simultaneously a lower section for the directly superior movable section and an upper section for the directly below it. Therefore, the technical characteristics described below with reference to a lower or upper section are cumulatively found on each movable section of the telescopic mast device according to the invention, with the exception of the last movable section located at the free end of said telescopic mast device, opposite the fixed section. Naturally, in order to allow such a sliding and concentric assembly, the dimensions of the hollow cylindrical bearing surfaces forming each movable section are adapted to one another.In general, the hollow cylindrical span of an upper section has a larger radial dimension than that of a lower section. Furthermore, along the axis of proper elongation, the hollow cylindrical span of a moving section has an invariant cross-section or several segments, each segment exhibiting a specific radial elongation – for example, bulges or narrower segments.

[0021]

[0020] In the context of the present invention, the angular indexing elements prevent rotation of each upper section relative to the directly adjacent lower moving section, relative to its own axis of extension. In other words, the angular indexing elements define a single angular configuration between the lower section and the directly adjacent upper section, in order to prevent torsional movement between them, relative to the own axis of extension of the telescopic mast device. In the context of the present invention, the angular indexing elements are mounted on all or part of the moving sections. In the context of the present invention, the angular indexing elements are configured to prevent relative rotation between two adjacent moving sections when the mast is in its deployed configuration.Complementarily or alternatively, the angular indexing elements are configured to prevent relative rotation between two adjacent moving sections when the mast is being deployed or retracted. Preferably, during this transitional phase of deployment or retraction of the telescopic mast device according to the configured invention, the angular indexing elements are configured to limit relative rotation between two adjacent moving sections to an amplitude less than or equal to a predetermined threshold, for example, equal to a few degrees, preferably equal to 0.1°, preferably also equal to 0.01° or 0.001° with respect to the extension axis of said telescopic mast device.

[0021] Thus, the telescopic mast device according to the first aspect of the invention solves the technical problem in that the use of angular indexing elements on the moving sections makes it possible to better constrain said moving sections to each other and to reduce or even eliminate their internal mobility with respect to rotation around their own axis of extension. This advantageous configuration makes the telescopic mast device according to the first aspect of the invention more robust and reliable, reducing the risk of failure or breakage during intensive use and, for example, during the deployment or retraction phases of the telescopic mast device in high wind conditions.

[0022]

[0022] The telescopic mast device according to the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:

[0023]

[0023] - according to a first embodiment of the invention, at least one indexing shim is formed from the same material as the corresponding moving section. In the context of the present invention, “formed from the same material” means that the at least one indexing shim and the moving section are produced by the same manufacturing process and that they cannot be separated from one another without one or both being wholly or partially damaged or destroyed. Alternatively, according to a second embodiment of the invention, the at least one indexing shim is attached to the corresponding moving section;

[0024]

[0024] - Each movable section comprises, at one upper end, a paddle extending perpendicularly to said movable section. The paddle allows for the shaping of a sail intended to equip the telescopic mast device. Each paddle has at least one indexing wedge attached and fixed securely to the paddle by means of fastening means. In the context of the present invention, the paddle takes the form of a platform extending from and on either side of the considered movable section. Each paddle extends predominantly in a plane perpendicular to its own axis of elongation. Each paddle is preferably made of a composite material, such as, for example, one containing carbon fibers and / or glass fibers.

[0025] - The means for attaching at least one indexing shim to the indexing shim include at least one screw for attaching said indexing shim and interacting with said indexing shim. In particular, the indexing shim is integral with a flange mounted around the moving section. The flange is preferably made of a rigid material that ensures precise, reliable, and robust attachment of the corresponding indexing shim. For this purpose, the flange is made of a metallic material with a high modulus of elasticity, or of a composite material, such as, for example, one reinforced with carbon fibers and / or glass fibers. The flange is preferably bonded to the moving section, and the corresponding indexing shim is securely attached to the flange, notably by bolting. The attachment means include, for example, fixing screws that interact with the indexing shim and the indexing shim;

[0025]

[0026] - The telescopic mast device includes means for indexing at least one indexing wedge with the indexing arm. By way of non-limiting example, the means for indexing at least one indexing wedge with the indexing arm include conical centering pins allowing for the precise positioning of said indexing wedge on the arm. Alternatively, the indexing means include, for example, a centering pin interacting with at least one indexing wedge and the indexing arm, and indexing openings provided both on the arm and on at least one indexing wedge, said centering pin passing through the openings to achieve such centering. Centering at least one indexing arm is essential for the subsequent functional and reliable interaction of said indexing wedge with the moving section;

[0026]

[0027] - at least one indexing wedge has a coupling span that extends parallel to the axis of natural elongation, between the upper and lower sections. The coupling span thus extends radially between the lower and upper sections, allowing for angular indexing of two adjacent moving sections. As a non-limiting example, the length of the coupling span – measured parallel to the axis of natural elongation – is between 5 cm and 20 cm, preferably 11.5 cm. More generally, the coupling span has a length between 5% and 20% of the length of the moving section to which it is attached. This advantageous configuration provides a sufficient coupling length between two adjacent moving sections to achieve good angular indexing and limit the risk of the moving sections jamming when the telescopic mast extends or retracts;

[0027]

[0028] - The coupling surface has a cylindrical portion offering a surface complementary to the shape and dimensions of the lower section opposite it. Thus, the coupling surface has a cylindrical shape opposite the upper moving section which slides within the lower moving section on which at least one indexing shim is mounted. This cylindrical shape makes it possible to exploit an existing radial space between the upper and lower sections to achieve angular indexing between them;

[0028]

[0029] In particular, the coupling span takes the form of a portion of a hollow cylinder. This coupling span further includes a groove extending parallel to the axis of natural extension. The groove is configured to accommodate the adjacent indexing rail with minimal torsional play. Torsional play is defined here as play along a circumferential contour of the moving section and around the axis of natural extension of the telescopic mast device. For example, in the case of a circular moving section, the torsional play is measured around a circular profile centered on the axis of natural extension and passing through the groove and the indexing rail. The torsional play here corresponds to a residual torsional movement of the upper section relative to the lower section when the upper section is engaged and locked in rotation relative to the lower section.In other words, it corresponds to the existing - and tolerated - residual torsion between two successive moving sections of the telescopic mast device according to the invention, particularly during the deployment or folding phases of the telescopic mast device;

[0029]

[0030] - the shape and dimensions of the groove are complementary to the shape and dimensions of the indexing rail, so that the indexing rail can be inserted into the groove, by longitudinal sliding along its own axis of elongation, without torsional play or with minimal torsional play. The torsional play is less than 500 pm, preferably between 100 pm and 300 pm, for example equal to 200 pm;

[0031] - according to an example of an embodiment, in a plane perpendicular to the axis of proper elongation, the groove of the coupling bearing has a rectangular or trapezoidal shape. Consequently, in a plane perpendicular to the axis of proper elongation, the indexing rail has a rectangular or trapezoidal shape;

[0030]

[0032] - at least one indexing wedge comprises a support plate extending perpendicularly to the axis of natural elongation, the support plate being supported against the racket and fixed securely to the racket by the fastening means. The support plate facilitates the interaction between the indexing wedge and the associated racket, and more particularly with the collar to which said indexing wedge is fixed. The support plate extends radially outwards, relative to the axis of natural elongation, the coupling span extending at one end of said support plate proximal to the axis of natural elongation;

[0031]

[0033] - The indexing rail is configured to cooperate with the indexing wedge groove by engaging complementary shapes, this cooperation enabling the relative translation of the indexing rail with respect to the groove along its own axis of elongation. In the context of the present invention, the telescopic mast device comprises one or more indexing rails. However, it is necessary and sufficient to retain only one indexing rail to simplify and lighten the telescopic mast device. Each at least one indexing rail extends projecting from the moving section along a generatrix of said moving section parallel to its own axis of elongation. Each at least one indexing rail extends between an upper and a lower edge of the moving section. Advantageously, the at least one indexing rail extends along the entire length of a given moving section, relative to its own axis of elongation.

[0032]

[0034] - At least one indexing rail comprises a first guide section which, in conjunction with at least one indexing wedge located opposite it, exhibits a first circumferential clearance, and a second guide section which, in conjunction with at least one indexing wedge located opposite it, exhibits a second circumferential clearance less than the first circumferential clearance. This advantageous configuration allows for two different angular indexing situations depending on the use of the telescopic mast device. In particular, the second guide section is located below the first guide section, relative to the axis of natural extension. This advantageous configuration allows for a first radial clearance when the telescopic mast device is being extended, and a second radial clearance when the telescopic mast device is fully extended.In this case, angular indexing is performed more strictly when the telescopic mast device is fully extended than when it is in the process of being extended;

[0033]

[0035] - possibly, the first radial set is identical to the second radial set. In this case, the angular indexing is carried out under the same conditions when the telescopic mast device is being unfolded and when it is fully unfolded;

[0034]

[0036] - by way of non-limiting example, at the level of the first guide part, the circumferential play between at least one indexing rail and at least one corresponding indexing shim is greater than 1°. At the level of the second guide part, the circumferential play between at least one indexing rail and at least one corresponding indexing shim is less than 1°;

[0035]

[0037] - according to a first embodiment of the invention, relative to the axis of proper elongation, the profile of at least one indexing rail is constant along the first and second guide sections. In other words, each at least one indexing rail has a constant profile along the moving section, and in particular at the level of the first section;

[0036]

[0038] - possibly, relative to its own axis of elongation, the profile of at least one indexing rail differs depending on the section considered. In particular, at least one indexing rail has a third guide section located between the first and second guide sections, said at least one indexing rail having, along this third guide section, in conjunction with at least one indexing wedge located opposite it, a variable circumferential clearance. In other words, along the third guide section, relative to its own axis of elongation, the profile of at least one indexing rail is variable. In other words again, each at least one indexing rail has a variable profile along the third guide section of the moving segment.Thus, in this third section, the angular indexing between the lower and upper sections is progressive, with the torsional clearance becoming increasingly tight as the telescopic mast assembly approaches its fully extended configuration. Advantageously, along the third guide section, the circumferential clearance between at least one indexing rail and at least one opposing indexing wedge varies from a circumferential clearance value measured at the first guide section to a circumferential clearance value measured at the second guide section.

[0037]

[0039] - To this end, along the third guide section, the variation of the profile of at least one indexing rail is monotonic and / or linear. Generally, along the third guide section, at least one dimension of the profile of at least one indexing rail increases towards a lower edge of the moving section. More specifically, along the third guide section, a dimension of at least one indexing rail, taken perpendicular to the axis of proper elongation, increases towards a lower edge of the moving section. More precisely, along the third guide section, a circumferential cross-section of the profile of at least one indexing rail, taken along a circumferential chord of the moving section and perpendicular to the axis of proper elongation, has a dimension that increases towards a lower edge of the moving section.Thus, along the third part of the guide, the profile of at least one indexing rail has a trapezoidal profile;

[0038]

[0040] - According to a first embodiment, each at least one indexing rail is formed from a single material along with its corresponding moving section. In the context of the present invention, "formed from a single material" means that the indexing rail and its corresponding moving section are produced by the same manufacturing process and cannot be separated from one another without one or both being wholly or partially damaged or destroyed. Alternatively, according to a second embodiment, each at least one indexing rail is attached and fixed securely to its corresponding moving section, for example by gluing or welding;

[0039]

[0041] - According to a preferred embodiment of the invention, the telescopic mast device comprises a single indexing wedge associated with a single indexing rail. In this case, both the angular indexing wedge and the indexing rail are mounted on a rear face of the telescopic mast device according to the invention. Alternatively, the telescopic mast device comprises several indexing wedges associated with several indexing rails, each indexing wedge interacting with one of the indexing rails. In this latter case, the indexing wedges are angularly and regularly distributed around the axis of natural extension, and the indexing rails are angularly and regularly distributed around said axis of natural extension;

[0040]

[0042] The telescopic mast device includes axial centering elements for a lower and an upper section. In the context of the present invention, these axial centering elements reduce or even eliminate the radial play between a lower section and the directly adjacent upper section, which is mounted to slide within said lower section. The radial play is measured in a direction perpendicular to the axis of natural extension. The axial centering elements thus prevent a pivoting effect of the upper section relative to the lower section, with respect to a pivot axis intersecting the axis of natural extension of the telescopic mast device, which would otherwise lock the telescopic mast device. Furthermore, the centering elements secure the upper and lower sections together when—at the very least—the telescopic mast device conforming to the first aspect of the invention is extended.In the context of the present invention, the axial centering elements are mounted on all or part of the moving sections. Subsequently, the axial centering elements make it possible to reduce or even eliminate a relative rotational movement between two adjacent moving sections, relative to the natural extension axis of the telescopic mast device according to the invention.

[0041]

[0043] - The axial centering elements comprise at least one lower shim associated with a lower portion of the upper section, the lower shim being located on an outer face of the upper section and radially supported against an inner face of the lower section. Preferably, the axial centering elements comprise at least two lower shims associated with a lower portion of the upper section, the lower shims being angularly and regularly distributed around the axis of natural elongation. All the lower shims are located on the outer face of the upper section and radially supported against the inner face of the opposing lower section. Thus, each lower shim extends within the free radial space available between two adjacent moving sections.Each lower shim allows for adjusting the outside diameter of a given upper section—measured at its lower end and at the level of at least one of its lower shims—to the inside diameter of the associated lower section, thereby reducing or even eliminating radial play between said lower and upper sections. The combination of the lower shim(s) with the centering plates and centering profiles ensures proper alignment of the upper section as it slides within the lower section during the extension or retraction of the telescopic mast device according to the invention. In other words, the lower shims optimize the centering and alignment of the moving sections relative to each other during any operating configuration of the telescopic mast device.

[0042]

[0044] - at least one lower shim is attached to the lower part of the upper section. This advantageous configuration allows for precise adjustments to the dimensions and thickness of each lower shim, minimizing or even eliminating radial play with the adjacent lower section. In particular, at least one lower shim is housed in a recess machined into the lower part of the upper section. This advantageous configuration allows for a predetermined location for each lower shim;

[0043]

[0045] - at least one lower wedge is made of a composite material, such as, for example, Teflon® and / or Kevlar® and / or carbon fiber and / or fiberglass. Alternatively, at least one lower wedge is made of a plastic material with high crush resistance—to withstand radial forces between the two adjacent moving sections—while offering a low coefficient of friction to allow smooth sliding with the opposing lower section. For example, each lower wedge is made of High-Density Polyethylene (HDPE), for example, HDPE1000. This advantageous configuration facilitates the sliding of each lower wedge with the opposing lower section during the extension or retraction of the telescopic mast device according to the invention.

[0044]

[0046] According to a second aspect of the invention, a maritime vehicle is proposed comprising:

[0047] - at least one hull;

[0045]

[0048] - at least one telescopic mast device conforming to the first aspect of the invention or according to any of its improvements and whose fixed section is integral with at least one hull and rotatably mounted to said at least one hull.

[0046]

[0049] In the context of the present invention, the marine vehicle conforming to the third aspect of the invention can be of any type, whether or not it is equipped with a complementary non-sail propulsion system, such as, for example, an electric motor or a combustion engine. Advantageously, the marine vehicle is of the monohull or multihull type. In particular, according to a preferred embodiment of the invention, the marine vehicle is of the catamaran type.

[0047]

[0050] The maritime vehicle conforming to the second aspect of the invention preferably comprises a sail, and in particular an inflatable sail, attached to the telescopic mast device, so that external forces acting on the sail - and preferably on the inflatable sail - such as, for example, wind pressure on the lower edge of said sail, are transmitted to the telescopic mast device and then to the hull to which the fixed section of the telescopic mast device is attached.

[0048]

[0051] Preferably, the inflatable sail extends around the telescopic mast device, so that the movable sections of the telescopic mast device are located in a central area of ​​the airtight envelope of the inflatable sail, said inflatable sail being securely attached to the cleats of each movable section.

[0049]

[0052] Various embodiments of the invention are envisaged, incorporating, according to all their possible combinations, the different optional features described herein.

[0050]

[0053] Other features and advantages of the invention will become apparent from the following description on the one hand, and from several illustrative and non-limiting examples of embodiments given with reference to the attached schematic drawings on the other hand, in which:

[0054] [Fig.1] illustrates a three-dimensional view of an example of an embodiment of a telescopic mast device conforming to the first aspect of the invention, said telescopic mast device being configured in an unfolded configuration;

[0051]

[0055] [Fig.2] illustrates a cross-sectional profile view of the telescopic mast device shown in FIGURE 1;

[0052]

[0056] [Fig.3] illustrates a side cross-sectional view of the telescopic mast device shown in FIGURE 1 in a folded configuration;

[0053]

[0057] [Fig.4] illustrates a three-dimensional detail view of a lower part of a movable section of the telescopic mast device shown in FIGURE 1;

[0054]

[0058] [Fig.5] illustrates a cross-sectional view of the lower part of the movable section shown in FIGURE 4;

[0055]

[0059] [Fig.6] illustrates a three-dimensional cross-sectional view of an upper part of a movable section of the telescopic mast device shown in FIGURE 1;

[0056]

[0060] [Fig.7] illustrates a cross-sectional view of the upper part of the movable section shown in FIGURE 6;

[0057]

[0061] [Fig.8] illustrates a three-dimensional and transparent view of the interface between a lower section and an upper section of the telescopic mast device shown in FIGURE 1 and in unfolded configuration;

[0058]

[0062] [Fig.9] illustrates a three-dimensional view of the interface between a lower section and an upper section;

[0059]

[0063] [Fig.10] illustrates an example of the realization of a maritime vehicle conforming to the second aspect of the invention.

[0060]

[0064] Of course, the features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may include only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from prior art.

[0065] In particular, all the variants and embodiments described can be combined with each other if there are no technical obstacles to this combination.

[0061]

[0066] In the figures, elements common to several figures retain the same reference.

[0062]

[0067] With reference to FIGURES 1 to 9, the invention relates to a telescopic mast device 1 for a sail-powered vessel, the telescopic mast device 1 being erected along a proper elongation axis 01 and comprising:

[0063]

[0068] - a fixed section 11 intended to be positioned above an upper deck 42 of the ship;

[0064]

[0069] - a plurality of movable sections 10, 10A, 10B coaxial with the fixed section 11, each upper movable section 10, 10A, 10B - called upper section 10B - being mounted sliding in the directly lower movable section 10, 10A, 10B - called lower section 10A - relative to the proper elongation axis 01 of the mast.

[0065]

[0070] As can be seen in particular in Figures 1, 2, 3, and 5, each movable section 10, 10A, 10B takes the form of a hollow cylindrical span extending straight parallel to the axis of natural elongation 01. The hollow cylindrical span of a movable section 10, 10A, 10B is delimited by an inner contour and an outer contour. The thickness of the movable section 10, 10A, 10B—measured along a direction perpendicular to the axis of natural elongation 01—is constant along the axis of natural elongation 01 of a given movable section 10, 10A, 10B.

[0066]

[0071] The movable sections 10, 10A, 10B all extend in a straight line and are mounted one inside the other. The movable sections 10, 10A, 10B are thus dimensioned to be able to slide into one another in order to allow the telescopic mast device 1 to be extended – to hoist the sail of a marine vehicle 4 equipped with such a telescopic mast device 1 – or to be retracted – to lower the sail of said marine vehicle 4. The lower sections have larger cross-sections – taken perpendicular to the axis of elongation 01 – than the upper sections in order to accommodate said upper sections inside.

[0072] Each movable section 10, 10A, 10B is advantageously made of a composite material that provides both very high rigidity and minimizes the mass of such a telescopic mast device 1 according to the invention. For example, each movable section 10, 10A, 10B may include a carbon fiber and / or glass fiber reinforcement. Each movable section 10, 10A, 10B is preferably produced by filament winding.

[0067]

[0073] The dimensions of the movable sections 10, 10A, 10B along the axis of proper elongation 01 can be chosen according to the desired effects. In the example illustrated in FIGURE 1, all the movable sections 10, 10A, 10B have different lengths.

[0068]

[0074] Starting from the bottom, the first section is the fixed section 11. The fixed section 11 establishes the mechanical link between the telescopic mast device 1 according to the invention and a hull 41 of the marine vehicle 4 intended to be equipped with it. Preferably, the fixed section 11 is mounted to rotate relative to the hull 41 in order to easily orient the sail and the telescopic mast device 1 according to the direction of the wind blowing in the sail. Indeed, according to a particularly advantageous embodiment of the invention, the sail associated with the telescopic mast device 1 according to the invention is of the rigid or inflatable type, said rigid or inflatable sail being held securely attached to said telescopic mast device 1. Thus, to orient the rigid or inflatable sail in a given direction, it is sufficient to rotate the telescopic mast device 1 according to the invention, which then rotates the sail associated with it.It is then understood that it is necessary that all the moving sections 10, 10A, 10B of the telescopic mast device 1 be all coupled in rotation when the telescopic mast device 1 is deployed, via a rotational coupling with minimal play or, preferably, zero play and that, when the telescopic mast device 1 is being deployed or folded, that the angular play be reduced so as not to constrain the telescopic mast device 1 and / or that the moving sections 10, 10A, 10B are not all too pivoted relative to each other during these transient states.

[0069]

[0075] To this end, as shown in Figures 1, 2, 3, 6, and 7, at the level of an upper part 102, each movable section 10, 10A, 10B comprises a paddle 12 extending in a direction perpendicular to the axis of natural elongation 01. The paddle 12 thus forms a platform for connecting and shaping the sail associated with the telescopic mast device 1 according to the invention. Each paddle 12 is advantageously made of a composite material that provides both very high rigidity and minimizes its mass. For example, each paddle 12 may include a carbon fiber and / or glass fiber reinforcement. Each paddle 12 is mounted and securely fixed to the upper part 102 of one of the movable sections 10, 10A, 10B by any means of fastening, and in particular by riveting or fastening screws.

[0070]

[0076] As shown in Figures 8 and 9, the means for attaching a racket 12 to the upper part 102 of its movable section 10, 10A, 10B include, in particular, a collar 120 extending peripherally around said upper part 102. The collar 120 thus forms a peripheral rim extending from the movable section 10, 10A, 10B. The collar 120 therefore forms a mounting platform both for the racket 12 associated with the movable section 10, 10A, 10B, and also for various mounting and adjustment elements of the movable sections 10, 10A, 10B relative to each other. The collar 120 is either formed from the same material as the corresponding movable section 10, 10A, 10B, or attached to said movable section 10, 10A, 10B and fixed to it by any means. Each 120 collar is advantageously formed from a composite material which allows both very high rigidity and minimal mass.For example, each collar 120 may contain a carbon fiber and / or fiberglass reinforcement. The racket 12 is then securely attached to the collar 120, for example by bolting.

[0071]

[0077] As mentioned previously, in order to facilitate the translational movement of the upper moving sections 10, 10A, 10B in the lower moving sections 10, 10A, 10B, and in order to maintain a certain angular alignment between the different moving sections 10, 10A, 10B, the telescopic mast device 1 includes angular indexing elements 2 configured to limit the amplitude of a rotation between an upper section 10B and a lower moving section 10, 10A, 10B located opposite, relative to the proper elongation axis 01.

[0072]

[0078] The angular indexing elements 2 thus allow for defining a single angular configuration between the lower section 10A and the directly adjacent upper section 10B when the telescopic mast device 1 is deployed, and for defining a limited number of angular configurations between the lower section 10A and the directly adjacent upper section 10B when the telescopic mast device 1 is being deployed or retracted. The angular indexing elements 2 therefore prevent relative rotational movement between two adjacent moving sections 10, 10A, 10B when the telescopic mast device is deployed, as it is important that the telescopic mast device 1 be able to transmit torque around its own elongation axis 01 throughout its entire elongation in order to correctly orient the associated sail.In addition, the angular indexing elements 2 thus make it possible, when the telescopic mast device is being deployed or retracted, to avoid an excessively large rotational movement between two adjacent mobile sections 10, 10A, 10B, because it is important to maintain optimal angular alignment between two adjacent mobile sections 10, 10A, 10B, although it is then possible to tolerate a greater angular play during these transitional phases of the telescopic mast device 1. The angular indexing elements 2 are mounted on each mobile section 10, 10A, 10B.

[0073]

[0079] Advantageously, the angular indexing elements 2 allow for the blocking of relative rotation between two adjacent moving sections 10, 10A, 10B when the telescopic mast device 1 is configured in its extended position. By "blocking rotation," it is understood that two moving sections 10, 10A, 10B are coupled in rotation, such that it is not possible to rotate them relative to each other around the axis of natural extension 01. More generally, the angular indexing elements 2 allow for the reduction of internal mobility between two adjacent moving sections 10, 10A, 10B to a minimal angular amplitude when the telescopic mast device 1 is configured in its extended position, such as, for example, less than 1°.

[0074]

[0080] Complementarily or alternatively, the angular indexing elements 2 allow for blocking relative rotation between two adjacent movable sections 10, 10A, 10B when the telescopic mast device 1 is being extended or retracted, that is, when the movable sections 10, 10A, 10B are in translational motion relative to each other, and for any intermediate configuration between the extended and retracted configurations of the telescopic mast device 1 according to the invention. More generally, the angular indexing elements 2 allow for reducing internal mobility between two adjacent movable sections 10, 10A, 10B to a minimum angular amplitude when the telescopic mast device 1 is configured in any intermediate configuration chosen between the extended and retracted configurations, such as, for example, less than 1°.

[0075]

[0081] According to the invention, the minimum angular amplitude for the residual rotation remaining between two adjacent movable sections 10, 10A, 10B when the angular indexing elements 2 are engaged can be identical whether the telescopic mast device 1 is fully extended or during its extension or retraction. Alternatively, the minimum angular amplitude for the residual rotation remaining between two adjacent movable sections 10, 10A, 10B when the angular indexing elements 2 are engaged can be different between the fully extended configuration of the telescopic mast device 1 and the intermediate configurations of said telescopic mast device 1 when it is being extended or retracted.In this case, the angular indexing elements 2 are preferably configured to allow a residual rotation amplitude of two adjacent moving sections 10, 10A, 10B when the telescopic mast device 1 is configured in its unfolded configuration less than that of said two adjacent moving sections 10, 10A, 10B when the telescopic mast device 1 is being unfolded or folded.

[0076]

[0082] As seen in FIGURES 1, 2, 4, 6 and 8, the angular indexing elements 2 comprise at least one indexing wedge 22 attached to an upper part 102 of the upper section 10B, at least one indexing wedge 22 collaborating with at least one indexing rail 21 attached to the lower section 10A located opposite said at least one indexing wedge 22. In the embodiment illustrated in the FIGURES, the telescopic mast device 1 comprises a single angular indexing wedge 22 collaborating by engagement of complementary shapes with a single indexing rail 21.

[0077]

[0083] The indexing rail 21 extends along the upper section 10B and parallel to the axis of natural elongation 01. The indexing rail 21 projects outward from said upper section 10B. Thus, the indexing rail 21 extends within a radial gap located between the two adjacent moving sections 10, 10A, 10B. The indexing rail 21 extends from the lower part 101 of the moving section 10, 10A, 10B on which it is mounted and towards the upper part 102 of said moving section 10, 10A, 10B. The indexing rail 21 can take any shape. It can be, for example, a dovetail or a rail with a rectangular cross-section.

[0078]

[0084] The indexing rail 21 is preferably attached to and fixed rigidly to the corresponding moving section 10, 10A, 10B. For this purpose, the indexing rail 21 advantageously extends over a base in the form of a portion of a hollow cylinder complementary to the shape and dimensions of the corresponding moving section 10, 10A, 10B. In other words, the base on which the indexing rail 21 is formed takes the form of a curved plate reproducing the geometry of the cylindrical bearing surface forming the moving section 10, 10A, 10B onto which the centering profile 32 is assembled.

[0079]

[0085] The indexing rail 21 – via its base where applicable – is assembled onto the corresponding moving section 10, 10A, 10B by any means of fastening. Preferably, the invention favors screwless assemblies to ensure greater stability and prevent unforeseen deformation resulting from vibrations or fatigue of the various parts. By way of non-limiting example, the indexing rail 21 is bonded or welded to the corresponding moving section 10, 10A, 10B.

[0080]

[0086] Advantageously, in order to allow rotational coupling - relative to the proper elongation axis 01 - of all the moving sections 10, 10A, 10B together, each moving section 10, 10A, 10B comprises both an angular indexing rail 21 and an angular indexing wedge 22.

[0081]

[0087] As can be seen particularly in FIGURES 6 to 9, the indexing wedge 22 comprises:

[0082]

[0088] - a coupling span 312 which extends parallel to the axis of proper elongation 01 and in the radial interval located between the upper section 10B and the lower section 10A; and

[0083]

[0089] - a support plate 311 which extends perpendicularly to the axis of proper elongation 01, the support plate 311 being placed against the racket 12 and fixed securely to the racket 12 - and in particular to the corresponding collar 120 - by means of fixing.

[0090] The support plate 311 extends radially outwards relative to the natural elongation axis 01, with the coupling span 312 extending from one end of said support plate 311 proximal to the natural elongation axis 01. The support plate 311 facilitates interaction between the indexing wedge 22 and the associated racket 12, and more specifically with the collar 120 to which said indexing wedge 22 is fixed. In the embodiment illustrated in FIGURE 9, each support plate 311 is fixed rigidly to the racket 12 and / or the corresponding collar 120 by three fixing screws.

[0084]

[0091] Finally, the indexing wedge 22 has a general "L" shaped conformation. The coupling span 312 extends at the free end of the support plate 311, at the free radial gap between the two movable sections 10, 10A, 10B.

[0085]

[0092] The coupling span 312 extends relative to the axis of natural elongation 01. The coupling span 312 is located radially between the lower section 10A and the upper section 10B, so as to allow angular indexing of two adjacent movable sections 10, 10A, 10B by working with the indexing rail 21 located opposite it. To this end, the coupling span 312 has a cylindrical portion offering a surface complementary to the shape and dimensions of the lower section 10A located opposite it, so as to occupy the free radial gap between the two movable sections 10, 10A, 10B without creating mechanical interference with the upper section 10B sliding within the lower section 10A on which the indexing wedge 22 is mounted.

[0086]

[0093] The coupling span 312 includes a groove 310 extending parallel to the natural elongation axis 01. The groove 310 is configured to accommodate the adjacent indexing rail 21, with minimal torsional play when the telescopic mast device 1 is retracted. Torsional play is considered here as play taken along a circumferential contour of the moving section 10, 10A, 10B and around the natural elongation axis 01 of the telescopic mast device 1. For example, in the case of a circularly deformed moving section 10, 10A, 10B, the torsional play is measured around a circular profile centered on the natural elongation axis 01 and passing through the groove 310 and the indexing rail 21.The torsional play here corresponds to a residual torsional movement of the upper section 10B relative to the lower section 10A when said upper section 10B is engaged and locked in rotation relative to the lower section 10A thanks to the angular indexing elements 2 and, more particularly, to the coupling reach 312 of the indexing wedge 22 and the indexing rail 21 located opposite.

[0087]

[0094] To this end, the shape and dimensions of the groove 310 are complementary to the shape and dimensions of the indexing rail 21, so that the indexing rail 21 can be inserted into the groove 310 by sliding longitudinally along the axis of natural elongation 01, without torsional play or with minimal torsional play. In the example shown in particular in FIGURE 9, the coupling surface 312 has a rectangular or trapezoidal shape, and the indexing rail 21 also has a rectangular or trapezoidal shape, respectively.

[0088]

[0095] As shown in Figures 1, 2, 4, 6, 7, 8, and 9, the telescopic mast assembly 1 includes axial centering elements 3 for the lower section 10A and the upper section 10B. These axial centering elements 3 reduce or even eliminate the radial play between a lower section 10A and the directly adjacent upper section 10B when the telescopic mast assembly 1 is in its deployed configuration. The radial play is considered here in directions perpendicular to the extension axis 01 of the telescopic mast assembly 1, resulting from a difference in cross-section between the lower section 10A and the upper section 10B. Additionally, the axial centering elements 3 prevent two adjacent movable sections 10, 10A, 10B from pivoting relative to each other around the proper extension axis 01.The axial centering elements 3 thus prevent a bending effect of an upper section 10B relative to the lower section 10A, which would have the effect of blocking the telescopic mast device 1. The axial centering elements 3 make the upper section 10B and the directly adjacent lower section 10A coaxial.

[0089]

[0096] Advantageously, the centering elements 3 allow control of the radial play and coaxiality between the upper section 10B and the lower section 10A when the telescopic mast device 1 according to the invention is configured in its extended position. Alternatively or complementarily, the centering elements 3 allow control of the radial play and coaxiality between the upper section 10B and the lower section 10A when the telescopic mast device 1 according to the invention is transitioning from its extended to its retracted position, or vice versa. In other words, the centering elements 3 allow control of the radial play and coaxiality for any configuration of the movable sections 10, 10A, 10B.In particular, the centering elements 3 allow in this case to control the radial play, coaxiality and angular indexing of the mobile sections 10, 10A, 10B when the telescopic mast device 1 according to the invention is in its deployed configuration or when it is close to this configuration, in a transient phase of deployment or folding.

[0090]

[0097] As shown in Figures 1, 2, 4, 6, and 8, the centering elements 3 comprise several centering plates 31—preferably four—attached to an upper portion 102 of the upper section 10B, and at least two centering profiles 32—preferably four—attached to a lower portion 101 of the lower section 10A. Each centering plate 31 interacts by engaging complementary shapes with one of the opposing centering profiles 32 so as to reduce the radial play between the centering profile 32 and the opposing centering plate 31. The centering plates 31 are angularly and regularly distributed around the axis of natural elongation 01 to make the lower section 10A and the upper section 10B coaxial.Of course, by virtue of their shape and their collaboration with the centering plate 31 located opposite, each centering profile 32 allows, concurrently with the radial centering of the two movable sections 10, 10A, 10B, to achieve an angular indexing of the latter, so as to bring the said movable sections 10, 10A, 10B to orient themselves with respect to each other according to a single predetermined angular configuration determined by the position of the said centering profiles 32 and the said centering plates 31.

[0091]

[0098] It should be noted that the centering plate 31 can be confused with the angular indexing wedge 22 described previously. In particular, in the embodiment illustrated in the FIGURES, one of the centering plates 31 is in fact the angular indexing wedge 22 described previously, said indexing wedge 22 initially interacting with the indexing rail 21 when the movable sections 10, 10A, 10B are being unfolded or folded – it then clearly forms an indexing wedge 22 within the meaning of the invention, and said indexing wedge 22 then interacting with the centering profile 32 – located in the extension of the indexing rail 21, on the side of the lower part 101 of the movable section 10, 10A, 10B – it then clearly forms a centering plate 31 within the meaning of the invention.

[0092]

[0099] Each centering profile 32 extends parallel to the axis of natural elongation 01 along the lower portion 101 of the movable sections 10, 10A, 10B, so as to couple with the centering plate 31 when the movable sections 10, 10A, 10B approach their coupling zone corresponding to the unfolded configuration of the telescopic mast device 1 according to the invention. This advantageous configuration thus makes it possible to achieve both radial centering and angular indexing only in the vicinity of the unfolded configuration of the telescopic mast device 1 according to the invention. Each centering profile 32 projects from each lower portion 101 of the movable sections 10, 10A, 10B. Thus, each centering profile 32 extends into the radial gap located between the two adjacent movable sections 10, 10A, 10B.Each centering profile 32 extends from the lower part 101 of the movable section 10, 10A, 10B on which it is mounted towards the upper part 102 of said movable section 10, 10A, 10B. However, each centering profile 32 extends over a length significantly shorter than that of the angular indexing rail 21 described previously. Each centering profile 32 can be any shape. It can be, for example, a dovetail or a rectangular rail. For the sake of simplification, particularly during the assembly of the telescopic mast device 1, all the centering profiles 32 are identical.

[0093]

[0100] Each centering profile 32 is preferably attached and fixed rigidly to the corresponding movable section 10, 10A, 10B. For this purpose, each centering profile 32 advantageously extends over a base in the form of a hollow cylindrical portion complementary to the shape and dimensions of the corresponding movable section 10, 10A, 10B. In other words, the base on which the centering profile 32 is formed takes the form of a curved plate reproducing the geometry of the cylindrical bearing surface forming the movable section 10, 10A, 10B onto which said centering profile 32 is assembled.

[0094]

[0101] The centering profiles 32 – via their base where applicable – are assembled onto the corresponding moving section 10, 10A, 10B by any means of fastening. Preferably, the invention favors screwless assemblies to ensure greater stability and prevent unforeseen deformation resulting from vibrations or fatigue of the various parts. By way of non-limiting example, the centering profiles 32 are bonded or welded onto the corresponding moving section 10, 10A, 10B.

[0095]

[0102] Advantageously, in order to allow axial centering and minimization of the radial play existing between each moving section 10, 10A, 10B, each moving section 10, 10A, 10B comprises both a centering profile 32 located at its lower part 101 and a centering plate 31 located at its upper part 102.

[0096]

[0103] As can be seen particularly in FIGURES 6 to 9, the centering plate 31 comprises:

[0097]

[0104] - a coupling span 312 which extends parallel to the axis of proper elongation 01 and in the radial interval located between the upper section 10B and the lower section 10A; and

[0098]

[0105] - a support plate 311 which extends perpendicularly to the axis of proper elongation 01, the support plate 311 being placed against the racket 12 and fixed securely to the racket 12 - and in particular to the corresponding collar 120 - by means of fixing.

[0099]

[0106] The support plate 311 extends radially outwards relative to the natural elongation axis 01, with the coupling span 312 extending from one end of said support plate 311 proximal to the natural elongation axis 01. The support plate 311 facilitates interaction between the centering plate 31 and the associated bracket 12, and more specifically with the flange 120 to which said centering plate 31 is fixed. In the embodiment illustrated in FIGURE 9, each support plate 311 is fixed rigidly to the bracket 12 and / or the corresponding flange 120 by fixing screws.

[0100]

[0107] Finally, the centering plate 31 has a general "L" shaped conformation. The coupling surface 312 extends at the free end of the bearing plate 311, at the free radial gap between the two movable sections 10, 10A, 10B. The coupling surface 312 and the bearing plate 311 are made of material.

[0108] The coupling span 312 extends relative to the axis of natural elongation 01. The coupling span 312 is located radially between the lower section 10A and the upper section 10B, so as to reduce the radial clearance between two adjacent moving sections 10, 10A, 10B by working with the centering profile 32 located opposite it. To this end, the coupling span 312 has a cylindrical portion providing a surface complementary to the shape and dimensions of the lower section 10A located opposite it, so as to occupy the free radial gap between the two moving sections 10, 10A, 10B without creating mechanical interference with the upper section 10B sliding within the lower section 10A on which the centering plate 31 is mounted.

[0101]

[0109] The coupling surface 312 includes a groove 310 extending parallel to the natural elongation axis 01. The groove 310 is configured to accommodate the opposing centering profile 32 with minimal or even zero radial play. To this end, the shape and dimensions of the groove 310 in the centering plate 31 are complementary to the shape and dimensions of the opposing centering profile 32, so that the centering profile 32 can be inserted into the groove 310 by sliding longitudinally along the natural elongation axis 01 with no radial play or minimal radial play. For this purpose, a thickness of each centering profile 32, measured perpendicular to the natural elongation axis 01, compensates for the radial play in the opposing groove 310, between the groove 310 and the centering profile 32.Thus, each centering profile 32 is radially supported against the groove 310 located opposite, thereby centering the upper section 10B - supporting the centering profiles 32 - vis-à-vis the lower section 10A - supporting the centering plates 31.

[0102]

[0110] In the example visible in particular on FIGURE 8 the coupling range 312 of each centering plate 31 has a rectangular or trapezoidal shape, and each centering profile 32 also has a rectangular or trapezoidal shape respectively.

[0103]

[0111] As can be seen more particularly in FIGURE 4, in order to provide progressive centering of two adjacent movable sections 10, 10A, 10B, each centering profile 32 comprises:

[0112] - a first guiding part 321 which, by collaborating with the centering plate 31 located opposite, presents with a first radial play;

[0104]

[0113] - a second guide part 322 which, by collaborating with the centering plate 31 located opposite, presents with a second radial clearance lower than the first radial clearance;

[0105]

[0114] - a third guide part 323 located between the first guide part 321 and the second guide part 322, each centering profile 32 having along the third guide part 323, in collaboration with the centering plate 31 located opposite, a variable radial clearance.

[0106]

[0115] Thus, the first and third radial clearances are those that exist between two adjacent moving sections 10, 10A, 10B when the telescopic mast device 1 is being extended; while the second radial clearance is that present between two adjacent moving sections 10, 10A, 10B when the telescopic mast device 1 is fully extended. In this case, axial centering is achieved more strictly when the telescopic mast device 1 is fully extended than when it is being extended. In other words, the second radial clearance is minimal or even zero—each centering profile 32 bearing radially against the corresponding groove 310 of the centering plate 31 located opposite it—while the radial clearance is greater during the relative displacement configurations between two adjacent moving sections 10, 10A, 10B.This advantageous configuration makes it easier to maneuver the telescopic mast device 1 by reducing friction forces during the unfolding or folding phases of said telescopic mast device 1.

[0107]

[0116] The third part offers progressive radial tightening, with the radial play decreasing progressively according to the variation in thickness of the centering profiles 32.

[0108]

[0117] Finally, as can be seen in FIGURES 3, 4 and 5, the axial centering elements 3 comprise at least one lower shim 33 – and preferably four in the example illustrated in the FIGURES – associated with the lower part 101 of each movable section 10, 10A, 10B. Each lower shim 33 is located at an outer face of the lower part 101 of the movable section 10, 10A, 10B. Each lower shim 33 thus mounted on a movable section 10, 10A, 10B forming an upper section 10B is then, when said upper section 10B is engaged in the lower section 10A, radially supported against an inner face of the lower section 10A.

[0109]

[0118] The lower shims 33 are angularly and regularly distributed around the axis of proper elongation 01 in order to respect the coaxiality established at the level of the centering shims and the centering profiles 32.

[0110]

[0119] Each lower wedge 33 is attached to the lower portion 101 of the corresponding moving section 10, 10A, 10B. In particular, at least one lower wedge 33 is housed in a recess formed on an annular portion 34 of the lower portion 101 of the upper section 10B. Each recess is configured to axially lock the associated lower wedge 33 relative to the axis of natural elongation 01. Additionally, each recess is also configured to circumferentially lock the associated lower wedge 33 relative to a circumferential contour of the moving section 10, 10A, 10B.

[0111]

[0120] In order to reduce the risks of uncontrolled dismantling of a lower wedge 33, the lower wedges 33 are simply mounted in interlocking - i.e. sandwiched - between the two movable sections 10, 10A, 10B and in the imprint: each lower wedge is housed in the corresponding imprint and held radially by the mere presence of the lower section 10A located opposite it.

[0112]

[0121] As shown in FIGURE 4, each lower wedge 33 is shaped like a plate whose general form is a portion of a cylinder similar to the shape of the upper section 10B – for the portion of the lower wedge 33 bearing against the upper section 10B – and whose general form is a portion of a cylinder similar to the shape of the lower section 10A – for the portion of the lower wedge 33 bearing against the opposite lower section 10A. Furthermore, the imprint associated with each lower wedge 33 has a form complementary to that of said lower wedge 33, that is to say, approximately rectangular.

[0113]

[0122] With reference to FIGURE 10, the invention also addresses a marine vehicle 4 comprising at least one hull 41 and at least one telescopic mast device 1 as described above and whose fixed section 11 is integral with at least one of the at least one hull 41 and rotatably mounted to said hull 41.

[0123] Each telescopic mast device 1 of the marine vehicle 4 is associated with a sail, and in particular an inflatable sail, attached to the corresponding telescopic mast device 1.

[0114]

[0124] In the embodiment illustrated in FIGURE 10, the marine vehicle 4 is of the type of a pleasure craft, and in particular a catamaran. Such a catamaran has, for example, two telescopic mast devices fixed rigidly to a deck 42 of the marine vehicle 4, on each side of one of the two hulls 41.

[0115]

[0125] Of course, the invention is not limited to the examples just described, and many modifications can be made to these examples without departing from the scope of the invention. In particular, the various features, forms, variants, and embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. Specifically, all the variants and embodiments described above are combinable.

Claims

Demands

1. [Telescopic mast device (1) for a sail-propelled vessel, the telescopic mast device (1) extending along its own axis of elongation (01) and comprising: - a fixed section (11) intended to be attached to an upper deck (42) of the ship; - a plurality of movable sections (10, 10A, 10B) coaxial with the fixed section (11), each upper movable section (10, 10A, 10B) - called upper section (10B) - being mounted sliding in the directly lower movable section (10, 10A, 10B) - called lower section (10A) - relative to the proper elongation axis (01) of the mast; - angular indexing elements (2) configured to limit the amplitude of a rotation between an upper section (10B) and a lower movable section (10, 10A, 10B) located opposite, relative to the axis of proper elongation (01); characterized in that the angular indexing elements (2) comprise at least one indexing wedge (22) integral with an upper part (102) of the upper section (10B), at least one indexing wedge (22) collaborating with at least one indexing rail (21) integral with the lower section (10A) located opposite said at least one indexing wedge (22).

2. Telescopic mast device (1) according to the preceding claim, in which each movable section (10, 10A, 10B) has, at an upper end, a paddle (12) which extends perpendicularly to said movable section (10, 10A, 10B), the paddle (12) allowing the shaping of a sail intended to equip the telescopic mast device (1), each at least one indexing wedge (22) being attached and fixed securely to the paddle (12) by means of fastening means.

3. Telescopic mast device (1) according to any one of the preceding claims, wherein at least one indexing wedge (22) has a coupling span (312) which extends parallel to the axis of proper elongation (01) between the upper section (10B) and the lower section (10A).

4. Telescopic mast device (1) according to the preceding claim, wherein the coupling span (312) has a portion of a cylinder providing a surface complementary to the shape and dimensions of the lower section (10A) located opposite, the coupling span (312) taking the form of a portion of a hollow cylinder and further comprising a groove (310) which extends parallel to the axis of self-elongation (01), the groove (310) being configured to accommodate the indexing rail (21) located opposite, with minimal torsional play.

5. Telescopic mast device (1) according to the preceding claim taken in combination with claim 2, wherein at least one indexing wedge (22) comprises a support plate (311) which extends perpendicularly to the axis of proper elongation (01), the support plate (311) being supported against the racket (12) and fixed securely to the racket (12) by the fastening means, the coupling span (312) extending at the level of an end of the support plate (311) proximal to the axis of proper elongation (01).

6. Telescopic mast device (1) according to any one of the preceding claims, wherein at least one indexing rail (21) comprises: - a first guiding part (321) which, by working with at least one indexing wedge (22) located opposite it, presents a first circumferential clearance; and - a second guide part (322) which, in collaboration with at least one indexing wedge (22) located opposite, presents with a second circumferential clearance less than the first circumferential clearance, the second guide part (322) being located below the first guide part (321), relative to the axis of proper elongation (01).

7. Telescopic mast device (1) according to the preceding claim, wherein at the level of the first guide part (321), the circumferential clearance between at least one indexing rail (21) and at least one corresponding indexing wedge (22) is greater than 1°, and at the level of the second guide part (322), the circumferential clearance between at least one indexing rail (21) and at least one corresponding indexing wedge (22) is less than 1°.

8. Telescopic mast device (1) according to any one of claims 6 or 7, wherein at least one indexing rail (21) comprises a third guide part (323) located between the first guide part (321) and the second guide part (322), said at least one indexing rail (21) having along the third guide part (323), in collaboration with at least one indexing wedge (22) located opposite, a variable circumferential clearance, the circumferential clearance between at least one indexing rail (21) and at least one indexing wedge (22) located opposite varying from a value of the circumferential clearance taken at the level of the first guide part (321) to a value of the circumferential clearance taken at the level of the second guide part (322).

9. Telescopic mast device (1) according to the preceding claim, wherein along the third guide part (323), the profile of at least one indexing rail (21) has a trapezoidal profile, a circumferential section of the profile of at least one indexing rail (21), taken along a circumferential chord of the movable section (10, 10A, 10B) and perpendicular to the axis of proper elongation (01), having a dimension which increases in the direction of a lower edge of the movable section (10, 10A, 10B).

10. A telescopic mast device (1) according to any one of the preceding claims, wherein the telescopic mast device (1) comprises axial centering elements (3) having at least one lower wedge (33) associated with a lower portion (101) of the upper section (10B), the lower wedge (33) being located at an outer face of the upper section (10B) and being radially supported against an inner face of the lower section (10A), each lower wedge (33) allowing adjustment to a given outer diameter of an upper section (10B). - taken at the level of its lower part (101) and at the level of its at least one lower wedge (33) - to the internal diameter of the associated lower section (10A), in order to reduce or even cancel the radial play between said lower section (10A) and said upper section (10B).

11. Maritime vehicle (4) comprising: - at least one hull (41); - at least one telescopic mast device (1) according to any one of the previous claims and of which the fixed section (11) is integral with at least one shell (41) and rotatably mounted to said at least one shell (41).

Images