FR2486904A1 - Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast - Google Patents
Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast Download PDFInfo
- Publication number
- FR2486904A1 FR2486904A1 FR8016300A FR8016300A FR2486904A1 FR 2486904 A1 FR2486904 A1 FR 2486904A1 FR 8016300 A FR8016300 A FR 8016300A FR 8016300 A FR8016300 A FR 8016300A FR 2486904 A1 FR2486904 A1 FR 2486904A1
- Authority
- FR
- France
- Prior art keywords
- mast
- wishbone
- sleeve
- sail
- board
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B63H8/22—Rigging arrangements involving masts, e.g. for windsurfing for connecting wishbones to the mast
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
Description
La présente invention concerne un mât de planche à -voile. The present invention relates to a sailboard mast.
On sait que le gréement d'une planche à voile se compose de trois éléments qui sont : la voile, le mât, le wishbone. We know that the rigging of a windsurf board consists of three elements which are: the sail, the mast, the wishbone.
Le wishbone remplit tout à la fois des fonctions de gouvernail, d'écoute de voile, de barre d'appui et de maintien pour le planchiste. The wishbone fulfills all the functions of rudder, listening of veil, grab bar and support for the rider.
Le wishbone est rendu solidaire du mât au moyen d'un "bout" qui entoure le mât et vient s'amarrer sous tension à la poignée du wishbone. Lorsque le montage est correct, le wishbone est plaqué contre le mât au niveau de la face interne de la poignée. The wishbone is made integral with the mast by means of a "tip" which surrounds the mast and is moored under tension to the handle of the wishbone. When the assembly is correct, the wishbone is pressed against the mast at the inside of the handle.
Selon les nécessités de navigation, le wishbone peut,sous l'action du planchiste, pivoter autour du mât, être élevé ou abaissé ; le mât peut, sous l'action du vent dans la voile qu'il porte, tirer le wishbone vers l'avant ou latéralement. Depending on navigation requirements, the boom can, under the action of the rider, pivot around the mast, be raised or lowered; the mast can, under the action of the wind in the sail which it carries, pull the wishbone forward or laterally.
La permanence des actions de rotation, traction, poussée du wishbone sur le mât engendrent entre elles et à leur point de contact des phénomènes de friction et de pression pouvant atteindre des valeurs très élevées. The permanence of the actions of rotation, traction, thrust of the wishbone on the mast generate between them and at their point of contact phenomena of friction and pressure which can reach very high values.
On a remarqué que, dans certains conditions d'emploi, la poignée du wishbone agit par effet de poinçonnement et de cisaillement sur la surface extérieure du mât qu'elle attaque ; on a pu même constater des amorces de rupture dans la structure interne du mât, amorces qui, à terme, peuvent entraîner la rupture dudit mât quand ce dernier est soumis à de fortes sollicitations. It has been noted that, under certain conditions of use, the handle of the wishbone acts by the effect of punching and shearing on the external surface of the mast which it attacks; it has even been possible to observe incipient fractures in the internal structure of the mast, primers which, in the long term, can lead to the rupture of said mast when the latter is subjected to high stresses.
La présence, dans la structure interne des mâts stratifiés, dans la zone de contact mât/wishbone, d'une surépaisseur de stratifié fibres de verre/résine, ne suffit pas toujours à communiquer à cette zone une résistance suffisante tant à l'écrasement qu'à l'usure par frottement. The presence, in the internal structure of the laminated masts, in the mast / wishbone contact zone, of an excess thickness of glass fiber / resin laminate, is not always sufficient to communicate to this zone sufficient resistance both to crushing and to 'to wear by friction.
La présente invention vise à pallier ces inconvénients. C'est ainsi quelle a pour objet un mât pour planche à voile dont ltoriginalité consiste en ce qu'il com porte, dans la zone de liaison mât/wishbone, un manchon de protection externe rendu solidaire du mât sur toute sa longueur et réalisé à partir d'un matériau plastique thermoformable semi-rigide et doué de propriétés élastiques lui permettant de jouer le rôle d' amortisseur de choc. The present invention aims to overcome these drawbacks. This is the purpose of a mast for windsurfing, the originality of which is that it carries, in the mast / wishbone connection zone, an external protective sleeve made integral with the mast over its entire length and produced at starting from a semi-rigid thermoformable plastic material and endowed with elastic properties allowing it to play the role of shock absorber.
Ce manchon de protection est avantageusement réalisé à partir d'un matériau thermoformable choisi parmi le polyéthylène semi-rigide, le polyuréthane, le chlorure de polyvinyl et les caoutchoucs naturels et synthétiques. This protective sleeve is advantageously made from a thermoformable material chosen from semi-rigid polyethylene, polyurethane, polyvinyl chloride and natural and synthetic rubbers.
Selon un mode de réalisation préféré de l'invention, le manchon présente une épaisseur de paroi entre 1 et 4 mm et de préférence entre 1,5 et 3 mm, sa longueur se situe entre 50 et 8o cm et de préférence entre 55 et 65 cm et il est placé sur le mât de telle sorte que sa base se trouve à une distance comprise entre 90 et 120 cm et de préférence entre 100 et 110 cm du pied dudit mât. According to a preferred embodiment of the invention, the sleeve has a wall thickness between 1 and 4 mm and preferably between 1.5 and 3 mm, its length is between 50 and 80 cm and preferably between 55 and 65 cm and it is placed on the mast so that its base is at a distance between 90 and 120 cm and preferably between 100 and 110 cm from the foot of said mast.
La présente invention sera mieux comprise d'ailleurs et ses avantages ressortiront bien de la description qui suit, en référence au dessin schématique annexé dans lequel
Figure 1 est une vue d'une planche à voile équipée d'un mât selon l'invention
Figure 2 est une vue en perspective montrant de façon plus détaillée la zone de contact du wishbone avec le mât.The present invention will be better understood moreover and its advantages will emerge clearly from the description which follows, with reference to the appended schematic drawing in which
Figure 1 is a view of a windsurf board equipped with a mast according to the invention
Figure 2 is a perspective view showing in more detail the contact area of the boom with the mast.
Figure 3 est une vue en coupe longitudinale d'une partie du mât équipée du manchon de protection. Figure 3 is a longitudinal sectional view of part of the mast equipped with the protective sleeve.
Sur les figures, t désigne de façon générale une planche à voile,2 son mât équipé selon l'invention du manchon de protection 3. In the figures, t generally designates a windsurfing board, 2 its mast equipped according to the invention with the protective sleeve 3.
Comme on le voit sur les figures, le mât 2 de la planche à voile I est équipé, dans la zone où le wishbone 4 est plaqué contre lui au niveau de la face interne de la poignée 5, du manchon de protection externe 3. As can be seen in the figures, the mast 2 of the windsurf board I is equipped, in the area where the wishbone 4 is pressed against it at the level of the internal face of the handle 5, with the external protective sleeve 3.
Ce manchon est réalisé à partir de matières dont l'étant de surface déformable permet d'absorber les effets de frottement, poinçonnement et cisaillement dus à l'ac- tion de la poignée 5 du wishbone 4 sur la surface du mât. This sleeve is produced from materials whose deformable surface being makes it possible to absorb the effects of friction, punching and shearing due to the action of the handle 5 of the wishbone 4 on the surface of the mast.
C'est ainsi que les matériaux thermoformables du type po lyéthylène semi-rigide,polyurôthane, PVC et toute substance élastomère se sont révélé-es particulièrement adaptés pour cetusage. Leur structure semi-rigide permet, lors des sollicitations en flexion au cours de la navigation de répartir les forces de contrainte sur toute la surface du manchon ; dans le cas d'une structure rigide telle que celle du mât classique ces forces de contrainte sont concentrées au contraire aux points de contact de la poignée du rishbone et du mât, ce qui peut conduire à des ruptures de ce dernier. L'extrémité inférieure de ce manchon 3 tubulaire, rendu solidaire sur toute sa surface interne du mât 2 est placé à 105 cm du pied du mât ; sa longueur est de 60 cm et ltépaisseur de sa paroi de 2,5 mm.This is how thermoformable materials of the semi-rigid lyethylene po type, polyurethane, PVC and any elastomeric substance have proved to be particularly suitable for this use. Their semi-rigid structure makes it possible, during bending stresses during navigation, to distribute the stress forces over the entire surface of the sleeve; in the case of a rigid structure such as that of the conventional mast, these stress forces are concentrated, on the contrary, at the points of contact of the handle of the rishbone and of the mast, which can lead to ruptures of the latter. The lower end of this tubular sleeve 3, made integral over its entire internal surface of the mast 2 is placed 105 cm from the foot of the mast; its length is 60 cm and the thickness of its wall is 2.5 mm.
Le mât selon l'invention équipé du manchon de protection décrit ci-dessus s'est révélé capable de supporter sans problème les forces de friction et de pression ôle- vées auquel il peut être soumis du fait de la poignée du wishbone et, de ce fait, n'est plus soumis aux phénomènes de rupture que l'on a pu constater sur les mâts de la technique antérieure. The mast according to the invention equipped with the protective sleeve described above has been shown to be able to withstand without any problem the friction and pressure forces which it may be subjected to due to the handle of the wishbone and, as a result fact, is no longer subject to the phenomena of rupture that have been observed on the masts of the prior art.
Comme il va de soi, et comme il ressort de ce qui précède, la présente invention ne se limite pas au seul mode de réalisation décrit ci-dessus à titre d'exemple non limitatif ; elle en embrasse, au contraire, toutes les variantes de réalisation, quelle que soit notamment la nature du mât,et dans le cas de stratifié a le rapport relatif des éléments fibre de verre/résine le constituant. As is obvious, and as appears from the above, the present invention is not limited to the single embodiment described above by way of non-limiting example; on the contrary, it embraces all the variant embodiments thereof, whatever in particular the nature of the mast, and in the case of laminate has the relative ratio of the fiberglass / resin elements constituting it.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8016300A FR2486904A1 (en) | 1980-07-21 | 1980-07-21 | Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8016300A FR2486904A1 (en) | 1980-07-21 | 1980-07-21 | Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2486904A1 true FR2486904A1 (en) | 1982-01-22 |
Family
ID=9244470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8016300A Withdrawn FR2486904A1 (en) | 1980-07-21 | 1980-07-21 | Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2486904A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301333A1 (en) * | 1982-06-24 | 1984-07-26 | Franz 8011 Neukeferloh Hegele | Windsurfer |
DE3501001A1 (en) * | 1985-01-14 | 1986-07-17 | Mistral Windsurfing AG, Bassersdorf | Rig for a windsurfing board |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7729257U1 (en) * | 1977-09-21 | 1978-02-23 | Hochstetter, Christian Von, 4000 Duesseldorf | Standing sail board |
DE2728583A1 (en) * | 1977-06-24 | 1979-01-11 | Paul J Dvorny | Hollow mast for surf board sails, hang gliders and similar sports gear - comprises aluminium tube wound about with resin impregnated glass-fibre web |
DE7917148U1 (en) * | 1979-09-20 | Shark Wassersportgeraete Gmbh, 2830 Bassum | Boom attachment for sailboards |
-
1980
- 1980-07-21 FR FR8016300A patent/FR2486904A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7917148U1 (en) * | 1979-09-20 | Shark Wassersportgeraete Gmbh, 2830 Bassum | Boom attachment for sailboards | |
DE2728583A1 (en) * | 1977-06-24 | 1979-01-11 | Paul J Dvorny | Hollow mast for surf board sails, hang gliders and similar sports gear - comprises aluminium tube wound about with resin impregnated glass-fibre web |
DE7729257U1 (en) * | 1977-09-21 | 1978-02-23 | Hochstetter, Christian Von, 4000 Duesseldorf | Standing sail board |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301333A1 (en) * | 1982-06-24 | 1984-07-26 | Franz 8011 Neukeferloh Hegele | Windsurfer |
DE3501001A1 (en) * | 1985-01-14 | 1986-07-17 | Mistral Windsurfing AG, Bassersdorf | Rig for a windsurfing board |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2146812C (en) | Protective device for a control surface hinge, as for an aircraft | |
EP1893475A1 (en) | Fin unit with elastic attachment system on an underside of a marine apparatus | |
EP0609543A1 (en) | Improved device for skis and a ski equiped with such a device | |
EP4093666A1 (en) | Cambering device for profiled sail | |
FR2486904A1 (en) | Sleeve for sail-board mast - has soft sleeve material to prevent wishbone chafing against mast | |
EP0197576A1 (en) | Boat | |
EP2266672B1 (en) | Snowboard | |
CA1265958A (en) | Gear, for sail boards among others | |
EP3327297B1 (en) | Device for securing a member to a pipe, implementation assembly, installation and method | |
EP0219421B1 (en) | Sonar dome | |
FR3066753A1 (en) | MOORING ROD OF A MOORING BUOY | |
EP0024401B1 (en) | Inflatable structures and pneumatic boats comprising such structures | |
FR2752743A1 (en) | SNOW SURFBOARD PROVIDED WITH A DAMPING DEVICE | |
EP0692284A1 (en) | Ski damping device and ski provided with such a device | |
FR2850080A1 (en) | Anchor rope protecting device for sailing ship, has tube engaged with anchor rope and includes retention unit constituted of a hollow sphere to co-operate with guiding unit made of resilient material present on ships edge | |
EP0493207B1 (en) | Device for the mechanical coupling of a drawing element to a drawn element | |
WO2003004349A1 (en) | Device for damping the movements of an anchored boat | |
EP0071763A1 (en) | Ship's hull with adjustable planing surface | |
FR2642723A1 (en) | ANCHORING DEVICE WITH STABILIZATION PIECE | |
EP0851258A1 (en) | Fiber optical cable, flexible and with improved resistance | |
FR2548622A1 (en) | Rigging in particular for sailboard | |
FR2750945A1 (en) | Surf board for river use | |
FR2529856A1 (en) | Small craft with guided free rigging | |
EP0631470B1 (en) | Trawl boards | |
EP0142199A2 (en) | Shock absorbing device for the mast of a sail board |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |