WO1984003868A1 - Method for rigidifying and forming inflatable structures - Google Patents

Method for rigidifying and forming inflatable structures Download PDF

Info

Publication number
WO1984003868A1
WO1984003868A1 PCT/FR1984/000081 FR8400081W WO8403868A1 WO 1984003868 A1 WO1984003868 A1 WO 1984003868A1 FR 8400081 W FR8400081 W FR 8400081W WO 8403868 A1 WO8403868 A1 WO 8403868A1
Authority
WO
WIPO (PCT)
Prior art keywords
stiffener
wall
inflatable
envelopes
rigid
Prior art date
Application number
PCT/FR1984/000081
Other languages
French (fr)
Inventor
Robert Farrugia
Original Assignee
Robert Farrugia
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR8305030A external-priority patent/FR2543507B1/en
Priority claimed from FR8401102A external-priority patent/FR2567450A1/en
Application filed by Robert Farrugia filed Critical Robert Farrugia
Publication of WO1984003868A1 publication Critical patent/WO1984003868A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • B63B32/51—Inflatable boards, e.g. drop-stitch inflatable boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/70—Arrangements for handling, stowing or transport thereof

Definitions

  • the invention relates to a method of stiffening and closing inflatable structures through the use of removable or non-removable rollable stiffeners, locked between one or more independent inflated envelopes and resting on a semi-rigid conformation wall rollable in at least one sense, removable or not: the whole being included in an external envelope, and in particular an inflatable windsurfing structure.
  • the previous inventions stiffen the structures either - by stiffeners, rigid - by a high number of small tubes - by internal grids attached to the walls - by large tubes inflated to high pressures.
  • the first process is often cumbersome.
  • the third method is difficult to implement ( Figure 2).
  • the fourth requires the manufacture of bulky objects and a pressure iron that is constantly checked so as not to lose rigidity.
  • the present invention avoids these difficulties and offers other advantages: simple process, low cost of setting up, small size when the object is stored rollable structure when the stiffeners are removed. (They are themselves light and rollable) DESCRIPTION OF THE INVENTION. Simple process then variants.
  • the invention presented here consists of two independent inflatable envelopes 1, made of flexible material: rubber, PVC, canvas or not, linked together longitudinally O, so that a stiffener 2 can slide therein.
  • These two envelopes 1 during inflation tend to bend a conformation wall 3 reinforced in the lateral direction by ribs or reinforcements 5 on which rests the edge of the stiffener 2.
  • All of the envelopes, of the stiffener, of the conforming wall is included in a casing 4 made of fabric, rubberized or flexible canvas backed PVC.
  • the object obtained during inflation becomes very rigid due to the action of the stiffener blocked by air, thus immobilizing the shaping wall.
  • Figure 4A shows the structure of an elongated object stiffened by this process.
  • the stiffener 2 as well as the shaping wall 3 are made from materials such as ABS, polypropylene, polyethylene, pclycarbonate, PVC or the like. remove the stiffener, deflate the structure, the object rolls up and stores in a bag.
  • Inflatable envelopes they are made of fabric impermeable to air and liquids. Inflated by means of independent valves, they block the stiffener and prevent it from bending.
  • the outer envelope it encloses the whole assembly and also serves to protect it from shocks and wear. To prevent the membranes from expanding, it is made from a strong, light fabric.
  • Figure 3 is a sectional view of the process: O: assembly lines of the inflatable envelopes where slides 2. 1: inflatable envelopes. 2: stiffener. 3: conforming wall. 4: outer casing. 5: transverse reinforcements.
  • Figure 4A is a perspective view of the process.
  • Figure 4B is a perspective view of the process where the transverse reinforcement of the shaping wall is low in order to obtain the bending of the latter.
  • Figure 5 shows a stiffener rolled and then unwound, as well as the shaping wall. The envelopes are not shown.
  • Figure 6 shows an application: an inflatable ski.
  • Figure 7 shows a surf float in cross section, perspective and longitudinal section.
  • the section of the shaping wall is asymmetrical with respect to the longitudinal axis of the stiffener: Figure 8.
  • the reinforcements perpendicular to the stiffener, located on the shaping wall have an uneven thickness, small on one side, thick on the other.
  • the thin side bends more than the thick side: the profile becomes asymmetrical.
  • Applications a solid and light wing, a profiled mast, a flying wing.
  • Figure 8 perspective view of a wing thus obtained.
  • Figure 9 shows the sectional structure.
  • Figure 10 is a perspective view of the asymmetrically reinforced conformation wall.
  • the structure includes several stiffeners and several membranes: the shaping wall is blocked by the presence of stiffeners and inflatable envelopes between which they are slid: Figure 11.
  • Figure 12 shows different arrangements of stiffeners and casings. The same housing between two envelopes can be assigned zero, one, or more stiffeners.
  • Figure 12A 2 stiffeners and 2 inflatable casings.
  • Figure 12B structure with several envelopes, unevenly stiffened,
  • APPLICATIONS modules of partitions, roofs, walls, for occasional constructions: fair stand, but also stretcher, inflatable tent, windsurfing board, wing.
  • the reinforcements of the shaping wall are absent or very flexible: therefore, the wall bends in the lateral direction.
  • the shaping wall thus the stiffener (s) are not necessarily rollable within a reduced radius but are not not very rigid either.
  • the rigidity of the object is very important when inflating. Wind speed or surfboard reflector applications of very low thickness and weight, impeding envelopes of reduced viscosity and therefore more rigid elements of conformation.
  • FIG. 14 is an exploded perspective view of a board: a stiffener is in place. Beside: different profile. 6 °) 5tructure where the stiffener is blocked between the outer envelope and at least one confluent envelope: fiqure 12C.Le stiffener. upon inflation, bends more or less and takes the form of the outer envelope.
  • Figure 15 a sectional and perspective view of an object obtained.
  • the stiffener is here a sheet of fine polycarbonate, taking a rounded shape during inflation and extending over the entire upper surface here of the envelope.
  • FIG. 17 boat manufactured according to this variant: canoe or skiff. We see the stiffener in place, then removed. Then rolled.
  • FIG. 17 this variant makes it possible to manufacture an inflatable wheel, consisting of a disc locked between at least two envelopes. A housing provided on the outside of these envelopes receives a polycarbonate sheet (or other) which will rest on the circumference of the internal disc. The stiffener and the shaping wall, blocked by pressure, give rigidity to the wheel.
  • the envelopes located on either side of the shaping disc-wall are "half-buoys" provided with a hole for sliding an axa
  • the membranes can be concerned and light then ⁇ ue the outer envelope is heavier and reinforced:
  • the membranes can also be different from each other.
  • the same envelope can be made of fabrics of different qualities and one of the fabrics of a membrane can be a part of the outer envelope.
  • Figure 20 shows the section of an object according to this variant.
  • Inflatable envelopes are made from the outer envelope on which they are assembled.
  • the outer sheet is very reinforced to resist external aggressions (shocks, tears) and the internal parts are more flexible and lighter to closely fit the stiffener and the conforming wall.
  • the fluids used can have different densities.
  • the float measures 2.80m in length, 66cm in width, 13cm in height.
  • the wing mast measures 4 m60 in height, 60 cm in width, and 16 cm in maximum thickness. Figures 21,22,23,24,25,26,27,28.
  • the float it consists of 4 independent inflatable envelopes between which slide 3 removable stiffeners, one of which carries the fin, of a semi-rigid conformation wall that can be rolled in the longitudinal direction. The whole is inserted in a very solid outer envelope: FIG. 22A.
  • the upper part of the inflatable envelopes as well as the outermost part of the shaping wall can also constitute it: FIG. 22B.
  • the shaping wall it is obtained for example, by pressing flexible PVC sheets between which rigid and light materials are blocked: hollow aluminum tubes with thin wall, rigid PVC tubes, wooden profiles.
  • the support sheet below is rather rigid: thick canvas backed PVC.
  • the sheet of sus is used to immobilize the transverse reinforcements.
  • FIG. 22 shows the principle of assembling the envelopes. Simple in shape, they are interconnected l ⁇ ngitudinally at the location of the passage of the stiffeners. They are made from materials such as canvas rubber, flexible PVC / canvas solid, or other, resistant to various stresses. A non-slip part covers the float. (7: fig21)
  • the mast-wing it is manufactured like the float, but with a wall of conformation transversely more flexible than him, so as to obtain an optimum aerodynamic profile.
  • the choice of materials is identical, meeting the same constraints. here it has 4 inflatable envelopes and 3 removable stiffeners at the bottom of the mast.
  • the wing mast is rollable and can be stored in a bag once the stiffeners are removed and themselves rolled up, and stored in a bag.
  • the shaping wall it has the same characteristics as those of the shaping wall of the float but the stiffness of the reinforcements is less.
  • the stiffeners they are made of 4 mm thick polycarbonate, for example.
  • the central stiffener 2C in Figure 26 is a very elongated isosceles trapezoid, the two ends of which are modified: in the high end section with two curved lines; in the lower part by two different lines: on the side of the conformati ⁇ n wall, a slightly rounded line, on the envelope side, an accentuated curve.
  • the lower end of this central stiffener is extended by a part which will be used for the mast-float connection.
  • the stiffeners. lateral, shorter and thinner (2D figure 26) are also asymmetrical with respect to their longitudinal axis of symmetry.
  • upper part of the inflatable covers is welded and not PVC) on the outer envelope: figure 27: sectional view of the mast.
  • the manufacturing process is the same as that of the float, the constraints too.
  • the outermost part of the shaping wall can be a part of the outer envelope.
  • This outer envelope does not have a non-slip part.
  • a simple device welded or glued on this envelope allows to attach a wishbone which will be used to adjust the sail.
  • the sail: on figure 25 are drawn different sails of various surfaces and cuts. They are fixed to the mitaile by a zipper, or by "VELCRO". They can have a large gusset allowing the mast to slide there.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Textile Engineering (AREA)
  • Tents Or Canopies (AREA)

Abstract

Method for rigidifying and forming inflatable structures by the use of flexible stiffener(s) (2), removable or not, blocked between one or a plurality of independent inflated envelopes (1) and resting on a conformation wall (3) made semi-rigid by the use of strenghtening elements (5), removable or not, the whole assembly being incorporated inside a very solid envelope, and a structure particularly of an entirely inflatable sail board: float and mast-wing obtained by said method.

Description

PROCEDE DE RIGIBlF ICATIDN ET DE FORMAGE DE STRUCTURES GONFLABLES. L'invention concerne un procédé de rigidification et de fermage de structures gonflables grâce à l'utilisation de raidisseurs roulables amovibles ou non, bloqués entre une ou plusieurs enveloppes gonflées indépendantes et reposant sur une paroi de de conformation semi-rigide roulable dans au moins un sens ,amovible ou non:le tout étant inclus dans une enveloppe extérieure, et notamment structure de planche à voile gonflable. PROCESS FOR RIGIBlF ICATIDN AND FOR FORMING INFLATABLE STRUCTURES. The invention relates to a method of stiffening and closing inflatable structures through the use of removable or non-removable rollable stiffeners, locked between one or more independent inflated envelopes and resting on a semi-rigid conformation wall rollable in at least one sense, removable or not: the whole being included in an external envelope, and in particular an inflatable windsurfing structure.
Dans le domaine des structures gonflables rigidifiées, les inventions précédentes rigidifient les structures soit -par des raidisseurs, rigides -par un nombre élevé de petits boudins -par des quadrillages internes fixés aux parois -par de gros boudins gonflés à de fortes pressions. Le premier procédé est souvent encombrant.In the field of rigidified inflatable structures, the previous inventions stiffen the structures either - by stiffeners, rigid - by a high number of small tubes - by internal grids attached to the walls - by large tubes inflated to high pressures. The first process is often cumbersome.
Le seccnd entraîne un coût de fabrication plus élevé peur réaliser la juxtaposition de tous ces petits cylindres sans obtenir pour autant une rigidité parfaite (figure 1)The seccnd leads to a higher manufacturing cost to realize the juxtaposition of all these small cylinders without obtaining perfect rigidity (Figure 1)
Le troisième procédé est difficile à mettre en oeuvre (figure 2). Le quatrième oblige la fabrication d'objets encombrants et une ferte pression constamment contrôlée pour ne pas perdre la rigidité.The third method is difficult to implement (Figure 2). The fourth requires the manufacture of bulky objects and a pressure iron that is constantly checked so as not to lose rigidity.
La présente invention évite ces difficultés et offre d'autres avantages:procédé simple, faible coût de mise en oauvre , faible encombrement lorsque l'objet est rangé rstructure roulable quand les raidisseurs sont ôtés.(Ils sont eux- mines légers et roulables) DESCRIPTION DE L' INVENTION. Procédé simple puis variantes.The present invention avoids these difficulties and offers other advantages: simple process, low cost of setting up, small size when the object is stored rollable structure when the stiffeners are removed. (They are themselves light and rollable) DESCRIPTION OF THE INVENTION. Simple process then variants.
I. PROCEDE SIMPLE; un raidisseur, une paroi de conformation, deux enveloppes gonflables:figure 3.I. SIMPLE PROCESS; a stiffener, a shaping wall, two inflatable envelopes: Figure 3.
L'invention présentée ici se compose de deux enveloppes indépendantes gonflables 1 , en matériau souple : caoutchouc, PVC, entoilés ou non, reliées entre elles longitudinalement O, pour qu'un raidisseur 2 puisse s'y glisser. Ces deux enveloppes 1 lors du gonflage, ont tendance à faire ployer une paroi de conformation 3 renforcée dans le sens latéral par des nervures ou des renforts 5 sur lesquels prend appui le chant du raidisseur 2. L'ensemble des envelop pes, du raidisseur, de la paroi de conformation est inclus dans une enveloppe 4 en tissu, caoutchouté ou PVC entoilé souple. L ' objet obtenu lors du gonflage devient très rigide du fait de l'action du raidisseur bloqué par l' air , immobilisant ainsi la paroi de conformation. La figure 4A montre la structure d'un objet allongé rigidifié par ce procédé.The invention presented here consists of two independent inflatable envelopes 1, made of flexible material: rubber, PVC, canvas or not, linked together longitudinally O, so that a stiffener 2 can slide therein. These two envelopes 1 during inflation tend to bend a conformation wall 3 reinforced in the lateral direction by ribs or reinforcements 5 on which rests the edge of the stiffener 2. All of the envelopes, of the stiffener, of the conforming wall is included in a casing 4 made of fabric, rubberized or flexible canvas backed PVC. The object obtained during inflation becomes very rigid due to the action of the stiffener blocked by air, thus immobilizing the shaping wall. Figure 4A shows the structure of an elongated object stiffened by this process.
Pour rendre l'ensemble roulable et donc facile à ranger et à stocker,le raidisseur 2 ainsi que la paroi de conformation 3 sont fabriqués à partir de matériaux tels que ABS , polypropylène, polyéthylène, pclycarbonate , PVC ou autre.Ainsi , lorsque l'on enlève le raidisseur , que l ' on dégonfle la structure , l' objet se roule et se range dans un sac.Figure 5. a)La paroi de conformation : différents moyens de rendre la paroi de conformation semi-rigide dans un sens pour le roulage, plus ou moins rigide dans le sens perpendiculaire sont utilisés :1a paroi est épaisse mais nervurée,la paroi est peu épaisse mais renforcée. La qualité du renforcement obtenu permet ou non le ployage, dans le sens perpendiculaire au sens du raidisseur ,de cette paroi lorsque ce dernier est en place. Le ploiement de ce fond selon une section transversale (perpendiculaire au sens du roulage) rend l'objet encore plus rigide (profiié ) :Figures 4B et 13. b)Le raidisseur :c ' est une latte de polycarbonate (ou autre) roulable ayant la forme du profil de structure gonflable désiré. 5a hauteur participe pour une grande part à la rigidité de l'ensemble :Figure 5 :h=hauteur. c)Les enveloppes gonflables : elles sont en tissu imperméable à l'air et aux liquides . Gonflées au moyen de valves indépendantes, elles bloquent le raidisseur et l'empêchent de fléchir. d )L* enveloppe extérieure :elle enserre tout l'ensemble et sert aussi à le protéger des chocs, de l'usure. Pour empêcher la dilatation des membranes , elle est fabriquée à partir d'un tissu solide et léger.To make the assembly rollable and therefore easy to store and store, the stiffener 2 as well as the shaping wall 3 are made from materials such as ABS, polypropylene, polyethylene, pclycarbonate, PVC or the like. remove the stiffener, deflate the structure, the object rolls up and stores in a bag.Figure 5. a) The shaping wall: different ways of making the shaping wall semi-rigid in one direction to rolling, more or less rigid in the perpendicular direction are used: the wall is thick but ribbed, the wall is thin but reinforced. The quality of the reinforcement obtained allows or not the folding, in the direction perpendicular to the direction of the stiffener, of this wall when the latter is in place. The bending of this bottom in a cross section (perpendicular to the direction of travel) makes the object even more rigid (profiié): Figures 4B and 13. b) The stiffener: it is a rollable polycarbonate (or other) slat having the shape of the desired inflatable structure profile. 5a height largely contributes to the rigidity of the whole: Figure 5: h = height. c) Inflatable envelopes: they are made of fabric impermeable to air and liquids. Inflated by means of independent valves, they block the stiffener and prevent it from bending. d) The outer envelope: it encloses the whole assembly and also serves to protect it from shocks and wear. To prevent the membranes from expanding, it is made from a strong, light fabric.
A partir de ce modèle simple, il est possible de fabriquer de nombreux obj ets demandant une grande rigidité pour un faible poids: skis , canoë ,skiff , surf , aile volante ,mât, gonflablés.From this simple model, it is possible to manufacture many objects requiring great rigidity for a low weight: skis, canoe, skiff, surf, flying wing, mast, inflated.
La Figure 3 est une vue en coupe du procédé: O:lignes d'assemblage des enveloppes gonflables où se glisse 2. 1:enveloppes gonflables. 2 :raidisseur. 3:paroi de conformation. 4:enveloppe extérieure. 5:renforts transversaux. La figure 4A est une vue en perspective du procédé. La figure 4B est une vue en perspective du procédé où le renforcement transversal de le paroi de conformation est peu élevé afin d'obtenir le ployage de cette dernière.Figure 3 is a sectional view of the process: O: assembly lines of the inflatable envelopes where slides 2. 1: inflatable envelopes. 2: stiffener. 3: conforming wall. 4: outer casing. 5: transverse reinforcements. Figure 4A is a perspective view of the process. Figure 4B is a perspective view of the process where the transverse reinforcement of the shaping wall is low in order to obtain the bending of the latter.
La figure 5 montre un raidisseur roulé puis déroulé , ainsi que la paroi de conformation. Les enveloppes ne sont pas représentées. La figure 6 montre une application : un ski gonflable. La figure 7 montre un flotteur de surf en coupe transversale, perspective et coupe longitudinale.Figure 5 shows a stiffener rolled and then unwound, as well as the shaping wall. The envelopes are not shown. Figure 6 shows an application: an inflatable ski. Figure 7 shows a surf float in cross section, perspective and longitudinal section.
ILVARIANTES DU PROCEDE : pour rigidifier et donner des formes aux structures à partir du modèle simple.ILVARIANTS OF THE PROCESS: to stiffen and give forms to structures from the simple model.
1°) La section de la paroi de conformation est asymétrique par rapport à l'axe longitudinal du raidisseur :figure 8. Ainsi, les renforts perpendiculaires au raidisseur, situés sur la paroi de conformation ont une épaisseur inégale,faible d'un côté, épaisse de l'autre. Quand les enveloppes sont gonflées,le côté fin ploie plus que le côté épais :le profil devient asymétrique. Applications : une aile solide et légère, un mât profilé, une aile volante. La figure 8:vue en perspective d'une aile ainsi obtenue. La figure 9 montre la structure en coupe.1 °) The section of the shaping wall is asymmetrical with respect to the longitudinal axis of the stiffener: Figure 8. Thus, the reinforcements perpendicular to the stiffener, located on the shaping wall have an uneven thickness, small on one side, thick on the other. When the envelopes are inflated, the thin side bends more than the thick side: the profile becomes asymmetrical. Applications: a solid and light wing, a profiled mast, a flying wing. Figure 8: perspective view of a wing thus obtained. Figure 9 shows the sectional structure.
La figure 10 est une vue en perspective de la paroi de conformation asymétriquement renforcée.Figure 10 is a perspective view of the asymmetrically reinforced conformation wall.
2 ° ) La structure comporte plusieurs raidisseurs et plusieurs membranes : la paroi de conformation est bloquée par la présence des raidisseurs et des enveloppes gonflables entre lesquelles ils sont glissés :Figure 11.2 °) The structure includes several stiffeners and several membranes: the shaping wall is blocked by the presence of stiffeners and inflatable envelopes between which they are slid: Figure 11.
La figure 12 montre différents arrangements de raidisseurs et d ' enveloppes . Un même logement entre deux enveloppes peut se voir attribuer zéro,un, ou plusieurs raidisseurs. La figure 12A :2 raidisseurs et 2 enveloppes gonflables. La figure 12B :structure à plusieurs enveloppes , raidie inégalement, APPLICATIONS :modules de cloisons, de toits ,murs , pour des constructions occasionnelles : stand de foire, mais aussi brancard , tente gonflable ,planche à voile, aile.Figure 12 shows different arrangements of stiffeners and casings. The same housing between two envelopes can be assigned zero, one, or more stiffeners. Figure 12A: 2 stiffeners and 2 inflatable casings. Figure 12B: structure with several envelopes, unevenly stiffened, APPLICATIONS: modules of partitions, roofs, walls, for occasional constructions: fair stand, but also stretcher, inflatable tent, windsurfing board, wing.
3°)Les renforts de la paroi de conformation sont absents ou très souples : de ce fait , la paroi ploie dans le sens latéral .augmentant la rigidité:applications : poteaux , mâts :Figure 12C et 13. 4°)La paroi de conformation ainsi oue le(s) raidisseur ( s ) ne sont pas nécessairement roulables selon un rayon réduit mais ne sont pas très rigides non plus. La rigidité de l'objet 'evient très importante au gonflage. Applications rflctteur de planche à voile de vitesse ou d'un surf performants .d ' épaisseur et de poids très faibles , impesant des enveloppes de vciume réduit et donc des éléments de conformation plus rigides.3 °) The reinforcements of the shaping wall are absent or very flexible: therefore, the wall bends in the lateral direction. Increasing the rigidity: applications: posts, masts: Figure 12C and 13. 4 °) The shaping wall thus the stiffener (s) are not necessarily rollable within a reduced radius but are not not very rigid either. The rigidity of the object is very important when inflating. Wind speed or surfboard reflector applications of very low thickness and weight, impeding envelopes of reduced viscosity and therefore more rigid elements of conformation.
5°)Utilisation de profils ds raidisseurs différents pour modifier la forme et la rigidité de l'objet suivant l' usage. Exemple : un flotteur de planche à voile. L' avant relevé du raidisseur permet de sauter par dessus le vagues. Cette planche aurait avantage à disposer d'un raidisseur moins relevé pour aller plus vite. En changeant le profil du ou des raidisseurs , les qualités d'un objet sont modifiées. Ce dernier peut disposer de plusieurs raidisseurs interchangeables . La Figure 14 est une vue en perspective éclatée d'un surf:un raidisseur est en place. A côté :profil différent. 6°)5tructure où le raidisseur est bloqué entre l'enveloppe extérieure et au moins une enveloppe conflable :fiqure 12C.Le raidisseur. au gonflage , ploie plus ou moins et prend la forme de l'enveloppe extérieure. Applications:poteau,mât, hélice, pare-choc, skiff. La figure 15:vue eh coupe et en perspective d'un objet obtenu. Le raidisseur est ici une feuille ds polycarbonate fine, prenant une forme arrondie lors du gonflage et s ' étendant sur toute la surface ici supérieure, de l'enveloppe.5 °) Use of profiles of different stiffeners to modify the shape and the rigidity of the object according to the use. Example: a windsurfing float. The raised front of the stiffener allows you to jump over the waves. This board would benefit from having a stiffer less raised to go faster. By changing the profile of the stiffener (s), the qualities of an object are modified. The latter may have several interchangeable stiffeners. Figure 14 is an exploded perspective view of a board: a stiffener is in place. Beside: different profile. 6 °) 5tructure where the stiffener is blocked between the outer envelope and at least one confluent envelope: fiqure 12C.Le stiffener. upon inflation, bends more or less and takes the form of the outer envelope. Applications: pole, mast, propeller, bumper, skiff. Figure 15: a sectional and perspective view of an object obtained. The stiffener is here a sheet of fine polycarbonate, taking a rounded shape during inflation and extending over the entire upper surface here of the envelope.
La figure 16 : embarcation fabriquée selon cette variante :canoê ou skiff. On voit le raidisseur en place, puis ôté.puis roulé. La figure 17:cette variante permet de fabriquer une roue gonflable , constituée d'un disque bloqué entre au moins deux enveloppes. Un logement prévu à l'extérieur de ces enveloppes reçoit une feuille de polycarboπate (ou autre) qui va reposer sur la circonférence du disque interne. Le raidisseur et la paroi de conformation , bloqués par la pression donnent la rigidité à la roue. Les enveloppes situées de part et d'autre du disque-paroi de conformation sont des "demi-bouées" munies d'un trou pour glisser un axaFigure 16: boat manufactured according to this variant: canoe or skiff. We see the stiffener in place, then removed. Then rolled. FIG. 17: this variant makes it possible to manufacture an inflatable wheel, consisting of a disc locked between at least two envelopes. A housing provided on the outside of these envelopes receives a polycarbonate sheet (or other) which will rest on the circumference of the internal disc. The stiffener and the shaping wall, blocked by pressure, give rigidity to the wheel. The envelopes located on either side of the shaping disc-wall are "half-buoys" provided with a hole for sliding an axa
III. DETAILS ANNEXES DE REALISATION: 1°)Procédé de pose et de dépose des raidisseurs :Les membranes gonflables étant "bouchées" par une toils.un embout, un cône, ou par pincement , l' enveloppe extérieure n'inclue pas dans la plupart des cas, les deux extrémités de ces membranes. De ce fait , les raidisseurs se glissent dans leurs logements longitudinaux situes entre les lignes d'assemblage des membranes. La figure 1B montre les membranes bouchées7 et l'espace ouvert 8 compris entre les membranes , avec les raidisseurs en place. Quand l'enveloppe enferme la totalité des membranes , par exemple dans le cas d'extrémités profilées (planche à voile où le raidisseur se glisse par l'arrière)la pose et le dépose s'effectue par une fent dans l'enveloppe extérieure . La figure 19 montre un raidisseur en cours de glissemement.III. DETAILS ANNEXES OF EMBODIMENT: 1 °) Method of installation and removal of the stiffeners: The inflatable membranes being "blocked" by a cloth. A nozzle, a cone, or by pinching, the external envelope does not include in most case, the two ends of these membranes. As a result, the stiffeners slide into their longitudinal housings located between the assembly lines of the membranes. FIG. 1B shows the blocked membranes 7 and the open space 8 comprised between the membranes, with the stiffeners in place. When the envelope encloses all of the membranes, for example in the case of profiled ends (windsurfing where the stiffener slides from the rear) the installation and removal is carried out by a slit in the external envelope. Figure 19 shows a stiffener in the process of sliding.
2º)Les membranes peuvent être soucies et légères alors αue l'enveloppe extérieure est plus lourde et renforcée:Les membranes peu vent aussi être différentes entre elles. Une même enveloppe peut être constituée de tissus de qualités différentes et l'un des tis sus d'une membrane peut être une partie de l'enveloppe extérieure La figure 20 montre la coupe d'un objet selon cette variante. Les enveloppes gonflables sont fabriquées à partir de l'enveloppe extérieure sur laquelle elles sont assemblées . La feuille extérieure est très renforcée pour résister aux agressions externes cchocs , déchirures) et les parties internes sont plus souples et plus légères pour épouser étroitement le raidisseur et la paroi de conformation .2º) The membranes can be worried and light then αue the outer envelope is heavier and reinforced: The membranes can also be different from each other. The same envelope can be made of fabrics of different qualities and one of the fabrics of a membrane can be a part of the outer envelope. Figure 20 shows the section of an object according to this variant. Inflatable envelopes are made from the outer envelope on which they are assembled. The outer sheet is very reinforced to resist external aggressions (shocks, tears) and the internal parts are more flexible and lighter to closely fit the stiffener and the conforming wall.
3°)Les fluides utilisés peuvent avoir des états.des densités différents .3 °) The fluids used can have different densities.
EXEMPLE D'APPLICATION SELON LE PROCEDE :UNE PLANCHE A VOILE ENTIEREMENT GONFLABLE:FLOTTEUR ET MAT-AILE.EXAMPLE OF APPLICATION ACCORDING TO THE PROCESS: A FULLY INFLATABLE SAILBOARD: FLOAT AND MAT-WING.
Il s'agit d'une planche de saut de vague et de vitesse. Le flotteur mesure 2m80 en longueur, 66 cm en largeur, 13 cm de hauteur. Le mât-aile mesure 4 m60 en hauteur, 60 cm en largeur, et 16 cm en épaisseur maximum.Figures 21,22,23,24,25,26,27,28.It is a wave and speed jump board. The float measures 2.80m in length, 66cm in width, 13cm in height. The wing mast measures 4 m60 in height, 60 cm in width, and 16 cm in maximum thickness. Figures 21,22,23,24,25,26,27,28.
1°) Le flotteur:il est constitué de 4 enveloppes indépendantes gonflables entre lesquelles se glissent 3 raidisseurs amovibles dont l'un porte l' aileron , d ' une paroi de conformation semi-rigide roulable dans le sens longitudinal. Le tout est inserré dans une enveloppe extérieure très solide :figure 22A.La partie supérieure des enveloppes gonflables ainsi que la partie la plus extérieure de la paroi de conformation pouvant aussi la constituer :Fig.22B. a ) la paroi de conformation : elle est obtenue par exemple, par pressage de feuilles de PVC souples entre lesquelles sont bloqués des matériaux rigides et légers:tubes creux en aluminium à paroi mince, tubes PVC rigides , profilés en bois. La feuille support du dessous est plutôt rigide:PVC entoilé épais. La feuille du des sus sert à immobiliser les renforts transversaux. (figure 23) b)Les raidisseurs : ca sont eux qui donnent la rigidité et la forme au flotteur. Ils sont roulables, en polycarbonate de 4 mm par exemple. Le raidisseur central 2A porte l'aileron et dispose d'une encoche 6 où vient se glisser la paroi de conformation :Figure 24. Les raidisseurs latéraux 2B,moins hauts, plus courts ne partent pas d'aileron pour ce modèle de flotteur. c)Les enveloppes oenflables et l'enveloppe extérieure: la partie supérieure des enveloppes gonflables est soudée (dans le cas du PVC)sur l'enveloppe extérieure de façon à obtenir un compartimentage : la figure 22 montre le principe d'assemblage des enveloppes. De forme simple, elles sont reliées entre elles lαngitudinalement à l'endroit du passage des raidisseurs . Elles sont fabriquées à partir de matériaux tels que le caoutchouc entoilé, PVC souple/entoilé solides, ou autres,résistant aux contraintes diverses. Une partie anti-dérapante recouvre le flotteur. (7 :fig21)1 °) The float: it consists of 4 independent inflatable envelopes between which slide 3 removable stiffeners, one of which carries the fin, of a semi-rigid conformation wall that can be rolled in the longitudinal direction. The whole is inserted in a very solid outer envelope: FIG. 22A. The upper part of the inflatable envelopes as well as the outermost part of the shaping wall can also constitute it: FIG. 22B. a) the shaping wall: it is obtained for example, by pressing flexible PVC sheets between which rigid and light materials are blocked: hollow aluminum tubes with thin wall, rigid PVC tubes, wooden profiles. The support sheet below is rather rigid: thick canvas backed PVC. The sheet of sus is used to immobilize the transverse reinforcements. (Figure 23) b) The stiffeners: these are the ones that give rigidity and shape to the float. They are rollable, in polycarbonate of 4 mm for example. The central stiffener 2A carries the fin and has a notch 6 where the conformation wall slides: Figure 24. The lateral stiffeners 2B, which are shorter, shorter, do not leave a fin for this model of float. c) The inflatable envelopes and the outer envelope: the upper part of the inflatable envelopes is welded (in the case of PVC) to the outer envelope so as to obtain compartmentalization: FIG. 22 shows the principle of assembling the envelopes. Simple in shape, they are interconnected lαngitudinally at the location of the passage of the stiffeners. They are made from materials such as canvas rubber, flexible PVC / canvas solid, or other, resistant to various stresses. A non-slip part covers the float. (7: fig21)
2°)Ls mât-aile :il est fabriqué comme le flotteur, mais avec une paroi de conformation transversalement plus souple que lui, de façon à obtenir un profil aérodynamique optimum. Le choix des matériaux est identique, répondant aux mêmes contraintes. il possède ici 4 enveloppes gonflables et 3 raidisseurs amovibles par le bas du mât. Comme le flotteur ,le mât-aile est roulable et stockable dans un sac une fois les raidisseurs ôtés et eux-mêmes roulés, et rangés dans un sac. a ) La paroi de conformation:elle possède les mêmes caractéristiques que celles de la paroi de conformation du flotteur mais la rigidité des renforts est moindre. b)Les raidisseurs :ils sont en polycarbonate de 4 mm d'épaisseur, par exemple. Le raidisseur central 2C figure 26 est un trapèze isocèle très allongé dont les deux extrémités sont modifiêes: dans la partis haute terminaison par deux lignes courbes; dans la partie basse par deux lignes différentes : du côté de la paroi de conformatiαn ,une ligne légèrement arrondie, du côté enveloppes ,une courbe accentuée. L' extrémité inférieure de ce raidisseur central est prolongée par une partie qui servira à la liaison mât-flotteur.2 °) The mast-wing: it is manufactured like the float, but with a wall of conformation transversely more flexible than him, so as to obtain an optimum aerodynamic profile. The choice of materials is identical, meeting the same constraints. here it has 4 inflatable envelopes and 3 removable stiffeners at the bottom of the mast. Like the float, the wing mast is rollable and can be stored in a bag once the stiffeners are removed and themselves rolled up, and stored in a bag. a) The shaping wall: it has the same characteristics as those of the shaping wall of the float but the stiffness of the reinforcements is less. b) The stiffeners: they are made of 4 mm thick polycarbonate, for example. The central stiffener 2C in Figure 26 is a very elongated isosceles trapezoid, the two ends of which are modified: in the high end section with two curved lines; in the lower part by two different lines: on the side of the conformatiαn wall, a slightly rounded line, on the envelope side, an accentuated curve. The lower end of this central stiffener is extended by a part which will be used for the mast-float connection.
Les raidisseurs. latéraux , plus courts et plus fins(2D figure 26) sont aussi asymétriques par rapport à leur axe de symétrie longitudinal. partie supérieure des envelcppes gonflables est soudéetcas du PVC) sur l'enveloppe extérieure:figure 27:vue en coupe du mât. Le procédé de fabrication est le même que celui du flotteur, les contraintes aussi. Comme pour le flotteur, la partie la plus extérieure de la paroi de conformation peut être une partie de l'enveloppe extérieure. Figure 28.The stiffeners. lateral, shorter and thinner (2D figure 26) are also asymmetrical with respect to their longitudinal axis of symmetry. upper part of the inflatable covers is welded and not PVC) on the outer envelope: figure 27: sectional view of the mast. The manufacturing process is the same as that of the float, the constraints too. As with the float, the outermost part of the shaping wall can be a part of the outer envelope. Figure 28.
Cette enveloppe extérieure ne comporte pas de partie anti-dérapante. Un dispositif simple soudé ou collé sur cette enveloppe permet d'attacher un wishbone qui servira à régler la voile. d ) La voile : sur la figure 25 sont tracées différentes voiles de surfaces et de coupes diverses. Elles sont fixées au mitaile par une fermeture à glissière, ou par "VELCRO". Elles peuvent disposer d'un important gousset permettant d'y glisser le mât.This outer envelope does not have a non-slip part. A simple device welded or glued on this envelope allows to attach a wishbone which will be used to adjust the sail. d) The sail: on figure 25 are drawn different sails of various surfaces and cuts. They are fixed to the mitaile by a zipper, or by "VELCRO". They can have a large gusset allowing the mast to slide there.
Dans le cas d'une voile rapportée sur le bord de fuite du mât, une bordure d'environ 20 mm est prévue sur toute la hauteur du mât. (8 figure 25 ) In the case of a sail attached to the trailing edge of the mast, a border of approximately 20 mm is provided over the entire height of the mast. (8 figure 25)

Claims

REVENDICATIONS
1°)Procédé de rigidification et de formage de structures gonflables caractérisé en ce qu'il consiste à disposer au moins un raidisseur souple dans au moins une d i rectiαn par au moins une de de ses extrémités latérales (chant ), sur une paroi de conformation semi-rigide, à prévoir au moins une enveloppe gonflable venant prendre appui contre ces éléments, et à disposer le tout dans une enveloppe extérieure.1 °) method of stiffening and forming inflatable structures characterized in that it consists in having at least one flexible stiffener in at least one di rectiαn by at least one of its lateral ends (edge), on a conformation wall semi-rigid, to provide at least one inflatable envelope coming to bear against these elements, and to arrange the whole in an external envelope.
2°)Structure obtenue à partir du procédé selon la revendication 1.caractérisé en ce qu'elle comporte au moins un raidisseur souple réalisé en matière roulable au moins dans un sens, par exemple: polycarbonate, ABS-polyéthylène, polypropylène, PVC,etc...2 °) Structure obtained from the method according to claim 1. Characterized in that it comprises at least one flexible stiffener made of material that can be rolled at least in one direction, for example: polycarbonate, ABS-polyethylene, polypropylene, PVC, etc. ...
3°)Structure obtenue à partir du procédé selon la revendication 1 , caractérisé en ce qu'elle comporte une paroi de conformation semi-rigide roulable dans au mains un sens ,et rendue plus ou moins rigide dans le sens perpendiculaire par l'adjonction de renforts dans le cas d'une paroi mince, ou de nervures dans le cas d'une parai épaisse, contre laquelle se trouve au moins un chant d'au mains un raidisseur.3 °) Structure obtained from the method according to claim 1, characterized in that it comprises a semi-rigid conformation wall which can be rolled in one direction at hand, and made more or less rigid in the perpendicular direction by the addition of reinforcements in the case of a thin wall, or ribs in the case of a thick wall, against which there is at least one edge of the hands a stiffener.
4°)Structure selon la revendication 3 caractérisée en ce que les renforts situés sur la paroi de conformation , ont une épaisseur inégale,faible d'un côté, épaisse de l' autre , permettant d ' obtenir , dans ce cas, lors du gonflage, un profil asymétrique applicable à la réalisation d'ailes ou de mâts profilés, par exemple.4 °) Structure according to claim 3 characterized in that the reinforcements located on the shaping wall, have an uneven thickness, small on one side, thick on the other, allowing to obtain, in this case, during inflation , an asymmetrical profile applicable to the production of profiled wings or masts, for example.
5°)Structure pour la mise en ouvre du procédé selon les revendications 1,2, et 3 , caractérisée en ce que les enveloppes gonflables sont reliées entre elles longitudinalement en laissant un espace où au moins un raidisseur vient se glisser.5 °) structure for the implementation of the method according to claims 1,2, and 3, characterized in that the inflatable envelopes are interconnected longitudinally leaving a space where at least one stiffener is slipped.
6°)Structurs obtenue à partir du procédé selon les revendications 1 et 5 , caractérisée en ce que l'enveloppe extérieure comporte au moins une fente permettant de glisser au moins un raidisseur dans le cas où le(s) raidisseur (s ) est amovible (s). 7° )Structure obtenue à partir du procédé selon la revendication 1 caractérisée en ce que l'enveloppe extérieure est fabriquée dans une matière plus lourde et plus renforcée que les membranes gonflables.6 °) Structures obtained from the method according to claims 1 and 5, characterized in that the outer casing comprises at least one slot making it possible to slide at least one stiffener in the case where the stiffener (s) is removable (s). 7 °) Structure obtained from the method according to claim 1 characterized in that the outer shell is made of a heavier and more reinforced material than the inflatable membranes.
8°)Structure obtenue à partir du procédé selon les revendications 1 et 7 caractérisés en ce que les enveloppes gonflables sont fabriquées avec des tissus de qualités différentes. 9°)Structure obtenue à partir du procédé selon les revendications 1,7, et 8 caractérisée en ce que l'enveloppe extérieure est constituée des parties extérieures des enveloppes gonflables et de la paroi de conformation.8 °) structure obtained from the process according to claims 1 and 7 characterized in that the inflatable envelopes are manufactured with fabrics of different qualities. 9 °) Structure obtained from the method according to claims 1,7, and 8 characterized in that the outer envelope consists of the outer parts of the inflatable envelopes and the shaping wall.
10°)Planche à voile caractérisée en ce que le flotteur ainsi que le mât-aile sont fabriqués à partir du procédé selon la revendication 1,et de structures selon l'une quelconque des revendications 2 à 9. 10 °) Windsurf board characterized in that the float as well as the wing mast are manufactured from the method according to claim 1, and from structures according to any one of claims 2 to 9.
PCT/FR1984/000081 1983-03-28 1984-03-27 Method for rigidifying and forming inflatable structures WO1984003868A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8305030A FR2543507B1 (en) 1983-03-28 1983-03-28 FULLY INFLATABLE SURF OR SAILBOARD: MAT-SAIL AND FLOAT, WITH REMOVABLE FLEXIBLE STIFFENER
FR8401102A FR2567450A1 (en) 1984-01-24 1984-01-24 Method for stiffening and forming inflatable structures by the use of a rollable stiffener or stiffeners resting on a rollable semi-rigid shaping wall

Publications (1)

Publication Number Publication Date
WO1984003868A1 true WO1984003868A1 (en) 1984-10-11

Family

ID=26223362

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1984/000081 WO1984003868A1 (en) 1983-03-28 1984-03-27 Method for rigidifying and forming inflatable structures

Country Status (2)

Country Link
EP (1) EP0138932A1 (en)
WO (1) WO1984003868A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602980A1 (en) * 1986-08-22 1988-02-26 Houdebert Raoul Highly rigid inflatable element for water sports and leisure pursuits
FR2617792A1 (en) * 1987-07-10 1989-01-13 Putot Jean Inflatable canoe for travelling in rivers or in the waves
WO1999010231A1 (en) * 1997-08-22 1999-03-04 Jacek Skolik Swimming device
US6131532A (en) * 1997-09-08 2000-10-17 Winner; William K. Inflatable sailboat
WO2003055742A1 (en) * 2001-12-24 2003-07-10 Midamarine Pty Ltd Surfcraft
DE102015102062A1 (en) * 2014-11-03 2016-05-04 Boards & More Gmbh Segelrigg
DE102017010812A1 (en) * 2017-07-29 2019-01-31 Ernstfried Prade Inflatable surfboard with stiffening elements
FR3080090A1 (en) * 2018-04-12 2019-10-18 Patrick Therond CONSTRUCTIVE SYSTEM OF A RIGID INFLATABLE BOATING SHELL
US10526047B2 (en) 2017-01-24 2020-01-07 William Lucas Hopkins Watercraft with shape chamber
USD912752S1 (en) 2018-01-23 2021-03-09 William Lucas Hopkins Inflatable watercraft
WO2021084036A1 (en) * 2019-10-31 2021-05-06 Boards & More Gmbh Wing rig

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671642A (en) * 1926-07-28 1928-05-29 Goodyear S India Ruber Glove M Inflatable vulcanized article
US3657753A (en) * 1970-09-29 1972-04-25 Leo J Le Blanc Sr Folding inflatable surfboard
FR2337566A1 (en) * 1976-01-09 1977-08-05 Carn Patrick Sailing surfboard with inflatable floats - has sectional hull stiffened by boards and with mast joined by universal joint (NL 12.7.77)
FR2447316A1 (en) * 1979-01-23 1980-08-22 Mattei Antoine Inflatable mast for boat or land application - is made from rubberised materials fitting in socket at base
FR2466260A1 (en) * 1979-10-02 1981-04-10 Hennebutte Georges Surf board consisting of pneumatic air-tight bag - has panels of laminated material bonded to sides and supple edging

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671642A (en) * 1926-07-28 1928-05-29 Goodyear S India Ruber Glove M Inflatable vulcanized article
US3657753A (en) * 1970-09-29 1972-04-25 Leo J Le Blanc Sr Folding inflatable surfboard
FR2337566A1 (en) * 1976-01-09 1977-08-05 Carn Patrick Sailing surfboard with inflatable floats - has sectional hull stiffened by boards and with mast joined by universal joint (NL 12.7.77)
FR2447316A1 (en) * 1979-01-23 1980-08-22 Mattei Antoine Inflatable mast for boat or land application - is made from rubberised materials fitting in socket at base
FR2466260A1 (en) * 1979-10-02 1981-04-10 Hennebutte Georges Surf board consisting of pneumatic air-tight bag - has panels of laminated material bonded to sides and supple edging

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602980A1 (en) * 1986-08-22 1988-02-26 Houdebert Raoul Highly rigid inflatable element for water sports and leisure pursuits
FR2617792A1 (en) * 1987-07-10 1989-01-13 Putot Jean Inflatable canoe for travelling in rivers or in the waves
WO1999010231A1 (en) * 1997-08-22 1999-03-04 Jacek Skolik Swimming device
US6131532A (en) * 1997-09-08 2000-10-17 Winner; William K. Inflatable sailboat
WO2003055742A1 (en) * 2001-12-24 2003-07-10 Midamarine Pty Ltd Surfcraft
DE102015102062A1 (en) * 2014-11-03 2016-05-04 Boards & More Gmbh Segelrigg
USD913391S1 (en) 2017-01-24 2021-03-16 William Lucas Hopkins Inflatable watercraft
US10526047B2 (en) 2017-01-24 2020-01-07 William Lucas Hopkins Watercraft with shape chamber
WO2019025375A1 (en) 2017-07-29 2019-02-07 Ernstfried Prade Inflatable watercraft and method for the production thereof
DE102018003227A1 (en) * 2017-07-29 2019-01-31 Ernstfried Prade Inflatable watercraft, with process for its manufacture and adhesive table
CN110944905A (en) * 2017-07-29 2020-03-31 恩斯特弗里德·普拉德 Inflatable boat and production method thereof
US10913518B2 (en) 2017-07-29 2021-02-09 Ernstfried Prade Inflatable watercraft and method for the production thereof
DE102017010812A1 (en) * 2017-07-29 2019-01-31 Ernstfried Prade Inflatable surfboard with stiffening elements
USD912752S1 (en) 2018-01-23 2021-03-09 William Lucas Hopkins Inflatable watercraft
USD912750S1 (en) 2018-01-23 2021-03-09 William Lucas Hopkins Inflatable watercraft
USD912751S1 (en) 2018-01-23 2021-03-09 William Lucas Hopkins Inflatable watercraft
FR3080090A1 (en) * 2018-04-12 2019-10-18 Patrick Therond CONSTRUCTIVE SYSTEM OF A RIGID INFLATABLE BOATING SHELL
WO2021084036A1 (en) * 2019-10-31 2021-05-06 Boards & More Gmbh Wing rig

Also Published As

Publication number Publication date
EP0138932A1 (en) 1985-05-02

Similar Documents

Publication Publication Date Title
EP0202271B1 (en) Propulsive wing with inflatable armature
EP2768723B1 (en) Inflatable hull and buoyant vehicle, in particular a dinghy
WO1984003868A1 (en) Method for rigidifying and forming inflatable structures
US6539889B2 (en) Frame, inflatable skin and watercraft formed from same
US7314018B2 (en) Collapsible boat hull
EP0016770A1 (en) Sail craft
EP0151591B1 (en) Rigging particularly for sailing board
FR3091852A1 (en) INFLATABLE RIGGING, ESPECIALLY FOR WINDSURF WITH INFLATABLE FLOAT
US3932906A (en) Collapsible boat
FR3080834A1 (en) TYPICAL TYPE INFLATABLE BOAT
FR2460250A1 (en) Trimaran with circular floats - joined by bridges with curved aerofoil sections and fitted with centre plates
FR2567450A1 (en) Method for stiffening and forming inflatable structures by the use of a rollable stiffener or stiffeners resting on a rollable semi-rigid shaping wall
US4941419A (en) Catamaran boat structure
FR2555957A1 (en) Profiled and orientable sails, similar to a homogeneous wing
EP0024401A1 (en) Inflatable structures and pneumatic boats comprising such structures.
BE1031105B1 (en) Rigid inflatable sail
FR2913951A1 (en) Load e.g. sportsman, traction kite for use during e.g. kitesurfing, has rigid element maintaining negative dihedral at kite, and ribs formed of upper and lower parts, where lower parts of ribs and central part of aerofoil are concave
AU2011226921B2 (en) Collapsible boat hull
AU2005203597A1 (en) Collapsible boat hull
FR2797846A1 (en) Aerial wing for towing floating craft has mesh panels or holes at trailing edge to let out any water
FR2611645A1 (en) Device forming a rigid and foldable hull for an inflatable boat
FR2700993A1 (en) Roof structure, especially for vehicles
FR2773773A1 (en) Double surface sail for sail board or boat
CA2515812C (en) Collapsible boat hull
FR2474991A1 (en) Inflatable float with folding rigid deck hinged at sides - is reinforced with flexible material and protected at ends by keel

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): US

AL Designated countries for regional patents

Designated state(s): BE DE FR GB NL