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EP1024999A1 - Fender for protecting boat hulls against wear - Google Patents

Fender for protecting boat hulls against wear

Info

Publication number
EP1024999A1
EP1024999A1 EP97912290A EP97912290A EP1024999A1 EP 1024999 A1 EP1024999 A1 EP 1024999A1 EP 97912290 A EP97912290 A EP 97912290A EP 97912290 A EP97912290 A EP 97912290A EP 1024999 A1 EP1024999 A1 EP 1024999A1
Authority
EP
European Patent Office
Prior art keywords
boat
axis
main protective
support
hull
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Withdrawn
Application number
EP97912290A
Other languages
German (de)
French (fr)
Inventor
Guy Fondacaro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP1024999A1 publication Critical patent/EP1024999A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/02—Fenders integral with waterborne vessels or specially adapted therefor, e.g. fenders forming part of the hull or incorporated in the hull; Rubbing-strakes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
    • E02B3/26—Fenders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Definitions

  • the present invention relates generally to devices intended to absorb the shocks of a moving object against a fixed object such as a boat anchored in a port, and relates in particular to a defense device intended to prevent wear of hulls of boats due to shocks and friction against the edges of quays.
  • fenders which are elastomeric objects suspended by a rope along the hull of a boat and which are inserted between the boat and the edge of the quay when the boat docks, avoiding thus shocks and wear of the hull.
  • the fender being suspended vertically, it provides very little protection against the roll which causes movement of the boat in the vertical direction.
  • the fenders have the annoying disadvantage of jumping on the pontoon when a person jumps on the latter.
  • the best system therefore consists of installing movable rollers around an axis fixed either on the boat or on the pontoon.
  • a device of this kind described in US Patent 3,145,685 has an axis on which is mounted a plurality of rubber rollers intended to absorb impact energy when the boat is subjected to vertical movements.
  • the movements of the boat due to the turbulence of the water are not only vertical, and the boat is almost always subjected to horizontal movements causing the boat to rotate in one direction or the other.
  • the main object of the invention is to provide an improved defense device making it possible to absorb shocks and therefore to avoid the wear of a mobile object in contact with a fixed object whatever the movements. imposed on the moving object.
  • the object of the invention is therefore a defense device intended to absorb shocks and thus prevent the wear of a first object in relative motion relative to a second object, in particular of a boat hull in contact with a pontoon, comprising a main protective element with axial symmetry and of circular section, in free rotation around a geometric axis fixed with respect to a support integral with one or the other of the objects, and having a hardness less than that of the first object, and two secondary protective elements in the shape of an ogive, with axial symmetry and of circular section, arranged at each end of the defense element and in free rotation around the same geometric axis.
  • FIG. 1 represents a longitudinal section of a first embodiment of the device according to the invention mounted on its support
  • 2 shows a longitudinal section of a second embodiment of the device according to the invention mounted on its support.
  • the defense device illustrated in FIG. 1 comprises a main protective element 10 of cylindrical shape with circular section and two secondary protective elements 12 and 14 in the shape of a warhead.
  • the protective elements 10, 12 and 14 are in free rotation around a geometric axis 16 fixed relative to a support comprising a support plate 18 and two branches 20 and 22 intended to support the defense device.
  • the support plate 18 is fixed by screws 28 to a floating pontoon or to a docking platform 29.
  • the two branches 20 and 22 of the support comprise two circular rolling bearings 24 and 26 in which there is a metal axis 30 with high mechanical resistance in free rotation around the geometric axis 16.
  • the main protective element 10 is mounted on the metal axis 30 and may or may not be integral with the latter. If it must be integral with the metal axis 30, the element 10 can be mounted by overmolding and made integral with the metal axis 30 by means of the washers 32 and 34 fixed on the axis 30 or by any other method of fixing, in particular by gluing. But it is also possible to let the element 10 move freely around the axis 30. However, it will be necessary to provide transverse holding means to prevent translation of the element relative to the axis 30. These means holding could be clipping means placed in grooves of the axis 30.
  • the two elements 12 and 14 have, like the main element 10, an axial symmetry about the geometric axis 16 and have a circular section. They have the shape of a warhead, that is to say that the longitudinal section illustrated in FIG. 1 is a curvilinear curve of general triangular shape, but could be any other curvilinear shape, and in particular a semicircle.
  • the two elements 12 and 14 are supported by the metal axis 30 and can be made integral with the latter by washers 36 and 38 fixed on the axis and relative to which the elements are overmolded, or by any other fixing method, in particular by gluing. If it is desired that the 2 elements 12 and 14 are not integral with the axis 30 but simply rotate relative to the latter, it is necessary to provide means for holding the elements in position on the axis allowing their rotation free, such as means for clipping into grooves of one axis.
  • the protective elements 10, 12 and 14 are made of an elastomeric material such as polyvinyl chloride (PVC), polyethylene, polyurethane or any other equivalent material.
  • the element 10 and / or the elements 12 and 14 may be hollow and filled with air, water or partially filled with air and an aqueous solution.
  • air filling it is possible to provide valves allowing air to be blown in and to maintain an adequate internal pressure.
  • flexible bosses 40, 46 on the two elements 12 and 14 and 42, 44 at each end of the element 10 so as to reinforce the parts of the elements called to withstand strong compressions.
  • the device according to the invention can have a variable length as required, a length between 20cm and 2m being preferable. It can be fixed on a fixed dock or on a floating pontoon. The fixing is carried out so that the metal axis is horizontal so that the hull of a docking boat can drive the rotating elements by the rolling movements due to the turbulence of the water, and therefore causing frictionless rolling and thus avoiding wear of the shell.
  • this rotation is not entirely a rolling without friction due to the variation of the radius of rotation of the element 12, 14 along the axis, but it will avoid the wear of the hull of the boat which would not fail to occur if the defense device had only one main element and that the hull of the boat came to abut and rub against the metal axis.
  • FIG. 2 A second embodiment particularly suited to the angular movements of the boat hull relative to the axis 30 is illustrated in FIG. 2.
  • the main protective element 10 is no longer cylindrical but has a curvilinear longitudinal section whose profile is approximately in the extension of the profile of the longitudinal section of the elements 12 and 14.
  • the main element 10 will be stressed at the same time as one of the elements 12 and 14 each time the boat performs a slight rotational movement.
  • This arrangement therefore makes it possible, most of the time, to distribute the force over two of the three elements, namely the main element and one of the two secondary elements, rather than over a single element.
  • the defense device according to the invention is mounted with its horizontal axis, it is possible to use it with the axis of rotation mounted vertically. This can be the case to ensure the protection of the hulls of boats navigating in river waters, and particularly when the boat is cramped between two quays in a channel or a lock.
  • the two warp-shaped elements also find their use here to protect the hull of the boat subject to roll due to the turbulence of the water as it advances between the quays.
  • the device according to the invention may comprise several main elements located inside the bearings, and in particular in the first embodiment where these elements are cylindrical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Vibration Dampers (AREA)

Abstract

The invention concerns a fender for absorbing shocks and preventing wear of a first object in relative movement with respect to a second object (29), comprising a main protective element with axial symmetry and circular cross-section (10) rotating freely about a geometrical axis (16) fixed relative to a support (18, 20, 22) integral with one or the other of the first and second objects and having a hardness index less than that of said first object, and two secondary protective cone-shaped elements with axial symmetry and circular cross-section (12, 14) arranged at each end of the main protective element (10), independent thereof, and also freely rotating about the same geometrical axis (16).

Description

Dispositif de défense destiné à éviter l'usure des coques de bateaux Defense device intended to prevent wear on boat hulls
Domaine technique La présente invention concerne de façon générale les dispositifs destinés à amortir les chocs d'un objet mobile contre un objet fixe tel qu'un bateau ancré dans un port, et concerne en particulier un dispositif de défense destiné à éviter l'usure des coques de bateaux due aux chocs et frottements contre les bords de quais.Technical Field The present invention relates generally to devices intended to absorb the shocks of a moving object against a fixed object such as a boat anchored in a port, and relates in particular to a defense device intended to prevent wear of hulls of boats due to shocks and friction against the edges of quays.
Etat de la techniqueState of the art
Il est bien connu d'utiliser des pare-battage qui sont des objets en élasto ère suspendus par un cordage le long de la coque d'un bateau et qui s'intercalent entre le bateau et le bord du quai lorsque le bateau accoste, évitant ainsi les chocs et l'usure de la coque. Malheureusement, le pare-battage étant suspendu verticalement, il assure très peu de protection contre le roulis qui provoque un mouvement du bateau dans la direction verticale. De plus, lorsque le bateau accoste contre un ponton articulé, les pare-battage ont le fâcheux inconvénient de sauter sur le ponton lorsqu'une personne saute sur ce dernier. II existe également des défenses fixées sur les pontons ou les quais. Mais du fait qu'elles sont immobiles, elles n'empêchent pas l'usure de la coque lorsque le bateau est soumis au roulis.It is well known to use fenders which are elastomeric objects suspended by a rope along the hull of a boat and which are inserted between the boat and the edge of the quay when the boat docks, avoiding thus shocks and wear of the hull. Unfortunately, the fender being suspended vertically, it provides very little protection against the roll which causes movement of the boat in the vertical direction. In addition, when the boat docks against an articulated pontoon, the fenders have the annoying disadvantage of jumping on the pontoon when a person jumps on the latter. There are also defenses fixed on pontoons or docks. But because they are stationary, they do not prevent the wear of the hull when the boat is subjected to roll.
Le meilleur système consiste donc à installer des rouleaux mobiles autour d'un axe fixé soit sur le bateau, soit sur le ponton. Un dispositif de cette sorte décrit dans le brevet des USA 3.145.685 comporte un axe sur lequel est montée une pluralité de rouleaux de caoutchouc destinés à absorber l'énergie des chocs lorsque le bateau est soumis à des mouvements verticaux. Malheureusement, les mouvements du bateau dus à la turbulence de l'eau ne sont pas seulement verticaux, et le bateau est presque toujours soumis à des mouvements horizontaux entraînant une rotation du bateau dans un sens ou dans l'autre. Dans ce cas, à moins de prévoir des rouleaux tout le long du bateau ou tout le long du ponton, ce qui revient à un coût exorbitant, le bateau n'est plus protégé par un rouleau à chaque extrémité et sa coque vient heurter alors l'axe généralement en métal qui dépasse à chaque extrémité des rouleaux comme c'est le cas dans le brevet précité.The best system therefore consists of installing movable rollers around an axis fixed either on the boat or on the pontoon. A device of this kind described in US Patent 3,145,685 has an axis on which is mounted a plurality of rubber rollers intended to absorb impact energy when the boat is subjected to vertical movements. Unfortunately, the movements of the boat due to the turbulence of the water are not only vertical, and the boat is almost always subjected to horizontal movements causing the boat to rotate in one direction or the other. In this case, unless there are rollers all along the boat or all along the pontoon, which comes at an exorbitant cost, the boat is no longer protected by a roller at each end and its hull then strikes the 'generally metal axis which exceeds at each end of the rollers as is the case in the aforementioned patent.
Exposé de l'inventionStatement of the invention
C'est pourquoi le but principal de l'invention est de fournir un dispositif de défense perfectionné permettant d'amortir les chocs et donc d'éviter l'usure d'un objet mobile au contact d'un objet fixe quels que soient les mouvements imposés à l'objet mobile.This is why the main object of the invention is to provide an improved defense device making it possible to absorb shocks and therefore to avoid the wear of a mobile object in contact with a fixed object whatever the movements. imposed on the moving object.
L'objet de l'invention est donc un dispositif de défense destiné à amortir les chocs et éviter ainsi l'usure d'un premier objet en mouvement relatif par rapport à une second objet, notamment d'une coque de bateau au contact d'un ponton, comprenant un élément de protection principal à symétrie axiale et de section circulaire, en rotation libre autour d'un axe géométrique fixe par rapport à un support solidaire de l'un ou l'autre des objets, et présentant une dureté inférieure à celle du premier objet, et deux éléments de protection secondaire en forme d'ogive, à symétrie axiale et de section circulaire, disposés à chaque extrémité de l'élément de défense et en rotation libre autour du même axe géométrique.The object of the invention is therefore a defense device intended to absorb shocks and thus prevent the wear of a first object in relative motion relative to a second object, in particular of a boat hull in contact with a pontoon, comprising a main protective element with axial symmetry and of circular section, in free rotation around a geometric axis fixed with respect to a support integral with one or the other of the objects, and having a hardness less than that of the first object, and two secondary protective elements in the shape of an ogive, with axial symmetry and of circular section, arranged at each end of the defense element and in free rotation around the same geometric axis.
Description brève des figuresBrief description of the figures
Les buts, objets et caractéristiques de l'invention apparaîtront plus clairement à la lecture de la description qui suit faite en référence aux dessins dans lesquels : la figure 1 représente une coupe longitudinale d'un premier mode de réalisation du dispositif selon l'invention monté sur son support, et la figure 2 représente une coupe longitudinale d'un second mode de réalisation du dispositif selon l'invention monté sur son support.The objects, objects and characteristics of the invention will appear more clearly on reading the description which follows, given with reference to the drawings in which: FIG. 1 represents a longitudinal section of a first embodiment of the device according to the invention mounted on its support, and 2 shows a longitudinal section of a second embodiment of the device according to the invention mounted on its support.
Description détaillée de l'inventionDetailed description of the invention
Le dispositif de défense illustré sur la figure 1 comprend un élément de protection principal 10 de forme cylindrique à section circulaire et deux éléments de protection secondaires 12 et 14 en forme d'ogive. Les éléments de protection 10, 12 et 14 sont en rotation libre autour d'un axe géométrique 16 fixe par rapport à un support comportant une plaque de support 18 et deux branches 20 et 22 destinées à supporter le dispositif de défense. La plaque de support 18 est fixée par des vis 28 à un ponton flottant ou à un quai d'accostage 29.The defense device illustrated in FIG. 1 comprises a main protective element 10 of cylindrical shape with circular section and two secondary protective elements 12 and 14 in the shape of a warhead. The protective elements 10, 12 and 14 are in free rotation around a geometric axis 16 fixed relative to a support comprising a support plate 18 and two branches 20 and 22 intended to support the defense device. The support plate 18 is fixed by screws 28 to a floating pontoon or to a docking platform 29.
Les deux branches 20 et 22 du support comportent deux paliers de roulement circulaire 24 et 26 dans lesquels se trouve un axe métallique 30 à résistance mécanique élevée en rotation libre autour de l'axe géométrique 16. L'élément de protection principal 10 est monté sur l'axe métallique 30 et peut être solidaire ou non de ce dernier. S'il doit être solidaire de l'axe métallique 30, l'élément 10 peut être monté par surmoulage et rendu solidaire de l'axe métallique 30 au moyen des rondelles 32 et 34 fixées sur l'axe 30 ou par tout autre procédé de fixation, notamment par collage. Mais il est également possible de laisser l'élément 10 se mouvoir librement autour de l'axe 30. Toutefois, il faudra prévoir des moyens de maintien transversal pour empêcher une translation de l'élément par rapport à l'axe 30. Ces moyens de maintien pourraient être des moyens de clipsage placés dans des rainures de l'axe 30.The two branches 20 and 22 of the support comprise two circular rolling bearings 24 and 26 in which there is a metal axis 30 with high mechanical resistance in free rotation around the geometric axis 16. The main protective element 10 is mounted on the metal axis 30 and may or may not be integral with the latter. If it must be integral with the metal axis 30, the element 10 can be mounted by overmolding and made integral with the metal axis 30 by means of the washers 32 and 34 fixed on the axis 30 or by any other method of fixing, in particular by gluing. But it is also possible to let the element 10 move freely around the axis 30. However, it will be necessary to provide transverse holding means to prevent translation of the element relative to the axis 30. These means holding could be clipping means placed in grooves of the axis 30.
Les deux éléments 12 et 14 présentent, comme l'élément principal 10, une symétrie axiale autour de l'axe géométrique 16 et ont une section circulaire. Ils ont une forme d'ogive, c'est à dire que la coupe longitudinale illustrée sur la figure 1 est une courbe curviligne de forme générale triangulaire, mais pourrait être toute autre forme curviligne, et en particulier un demi-cercle.The two elements 12 and 14 have, like the main element 10, an axial symmetry about the geometric axis 16 and have a circular section. They have the shape of a warhead, that is to say that the longitudinal section illustrated in FIG. 1 is a curvilinear curve of general triangular shape, but could be any other curvilinear shape, and in particular a semicircle.
De la même façon que l'élément de protection principal 10, les deux éléments 12 et 14 sont supportés par l'axe métallique 30 et peuvent être rendus solidaires de ce dernier par des rondelles 36 et 38 fixées sur l'axe et par rapport auxquelles les éléments sont surmoulés, ou par tout autre procédé de fixation, notamment par collage. Si l'on désire que les 2 éléments 12 et 14 ne soient pas solidaires de l'axe 30 mais simplement en rotation par rapport à celui-ci, il faut prévoir des moyens de maintien des éléments en position sur l'axe permettant leur rotation libre, tels que des moyens de clipsage dans des rainures de 1' axe. Dans un mode de réalisation préféré, les éléments de protection 10, 12 et 14 sont constitués d'un matériau élastomère tel que du chlorure de polyvinyle (PVC) , du polyéthylène, du polyuréthanne ou tout autre matériau équivalent. Dans une variante de réalisation, l'élément 10 et/ou les éléments 12 et 14 peuvent être creux et remplis d'air, d'eau ou remplis partiellement d'air et d'une solution aqueuse. Dans le cas de remplissage par air, on peut prévoir des valves permettant d'insuffler de l'air et de maintenir une pression interne adéquate. On doit noter qu'il est judicieux de prévoir des bossages souples 40, 46 sur les deux éléments 12 et 14 et 42, 44 à chaque extrémité de l'élément 10 de manière à renforcer les parties des éléments appelées à supporter de fortes compressions. Le dispositif selon l'invention peut avoir une longueur variable selon les besoins, une longueur comprise entre 20cm et 2m étant préférable. Il peut être fixé sur un quai d'accostage fixe ou sur un ponton flottant. La fixation est réalisée de manière à ce que l'axe métallique soit horizontal de manière à ce que la coque d'un bateau qui accoste puisse entraîner les éléments en rotation par les mouvements de roulis dus aux turbulences de l'eau, et donc provoquer un roulement sans frottement et éviter ainsi l'usure de la coque.In the same way as the main protective element 10, the two elements 12 and 14 are supported by the metal axis 30 and can be made integral with the latter by washers 36 and 38 fixed on the axis and relative to which the elements are overmolded, or by any other fixing method, in particular by gluing. If it is desired that the 2 elements 12 and 14 are not integral with the axis 30 but simply rotate relative to the latter, it is necessary to provide means for holding the elements in position on the axis allowing their rotation free, such as means for clipping into grooves of one axis. In a preferred embodiment, the protective elements 10, 12 and 14 are made of an elastomeric material such as polyvinyl chloride (PVC), polyethylene, polyurethane or any other equivalent material. In an alternative embodiment, the element 10 and / or the elements 12 and 14 may be hollow and filled with air, water or partially filled with air and an aqueous solution. In the case of air filling, it is possible to provide valves allowing air to be blown in and to maintain an adequate internal pressure. It should be noted that it is wise to provide flexible bosses 40, 46 on the two elements 12 and 14 and 42, 44 at each end of the element 10 so as to reinforce the parts of the elements called to withstand strong compressions. The device according to the invention can have a variable length as required, a length between 20cm and 2m being preferable. It can be fixed on a fixed dock or on a floating pontoon. The fixing is carried out so that the metal axis is horizontal so that the hull of a docking boat can drive the rotating elements by the rolling movements due to the turbulence of the water, and therefore causing frictionless rolling and thus avoiding wear of the shell.
Comme il a été mentionné précédemment, un bateau n'est quasiment jamais parallèle au quai d'accostage et effectue des légers mouvements de rotation. Dans ce cas, la coque du bateau s'écarte de l'élément principal 10 et bute contre l'un ou l'autre des éléments 12 et 14. Si le bateau est, comme il a été dit plus haut, soumis en outre à un roulis dû à la turbulence de l'eau ou aux pressions du vent sur la coque, le contact de celle-ci provoque la rotation de l'élément secondaire 12 ou 14. On doit noter que cette rotation n'est pas tout à fait un roulement sans frottement du fait de la variation du rayon de rotation de l'élément 12, 14 le long de l'axe, mais elle évitera l'usure de la coque du bateau qui ne manquerait pas de se produire si le dispositif de défense ne comportait qu'un élément principal et que la coque du bateau venait dans ce cas buter et frotter contre l'axe métallique.As mentioned previously, a boat almost never runs parallel to the dock and makes slight rotational movements. In this case, the hull of the boat departs from the main element 10 and abuts against one or the other of the elements 12 and 14. If the boat is, as was said above, further subjected to a roll due to the turbulence of the water or to the pressures of the wind on the hull, the contact of this one causes the rotation of the secondary element 12 or 14. It should be noted that this rotation is not entirely a rolling without friction due to the variation of the radius of rotation of the element 12, 14 along the axis, but it will avoid the wear of the hull of the boat which would not fail to occur if the defense device had only one main element and that the hull of the boat came to abut and rub against the metal axis.
Il faut noter également que les éléments secondaires 12 et 14 sont presque toujours sollicités et justifient pleinement leur présence dans la mesure où un bateau qui accoste arrive rarement parallèle au quai et bute inévitablement contre un des éléments secondaires 12 ou 14.It should also be noted that the secondary elements 12 and 14 are almost always used and fully justify their presence insofar as a docking boat rarely arrives parallel to the quay and inevitably abuts against one of the secondary elements 12 or 14.
Un second mode de réalisation particulièrement adapté aux mouvements angulaires de la coque de bateau par rapport à l'axe 30 est illustré sur la figure 2. Dans ce mode de réalisation, l'élément de protection principal 10 n'est plus cylindrique mais présente une section longitudinale curviligne dont le profil est approximativement dans le prolongement du profil de la section longitudinale des éléments 12 et 14. Ainsi, l'élément principal 10 sera sollicité en même temps que l'un des éléments 12 et 14 chaque fois que le bateau effectuera un léger mouvement de rotation. Cette disposition permet donc, la plupart du temps, de répartir l'effort sur deux des trois éléments à savoir l'élément principal et un des deux éléments secondaires plutôt que sur un seul élément. Bien que dans les modes de réalisation décrits ci- dessus, le dispositif de défense selon l'invention est monté avec son axe horizontal, il est possible de l'utiliser avec l'axe de rotation monté verticalement. Ceci peut être le cas pour assurer la protection des coques de bateaux navigant en eaux fluviales, et particulièrement lorsque le bateau est à l'étroit entre deux quais dans un chenal ou une écluse. Les deux éléments en forme d'ogive trouvent ici aussi leur utilité pour protéger la coque du bateau soumis au roulis dû à la turbulence de l'eau en même temps qu'il avance entre les quais.A second embodiment particularly suited to the angular movements of the boat hull relative to the axis 30 is illustrated in FIG. 2. In this embodiment, the main protective element 10 is no longer cylindrical but has a curvilinear longitudinal section whose profile is approximately in the extension of the profile of the longitudinal section of the elements 12 and 14. Thus, the main element 10 will be stressed at the same time as one of the elements 12 and 14 each time the boat performs a slight rotational movement. This arrangement therefore makes it possible, most of the time, to distribute the force over two of the three elements, namely the main element and one of the two secondary elements, rather than over a single element. Although in the embodiments described above, the defense device according to the invention is mounted with its horizontal axis, it is possible to use it with the axis of rotation mounted vertically. This can be the case to ensure the protection of the hulls of boats navigating in river waters, and particularly when the boat is cramped between two quays in a channel or a lock. The two warp-shaped elements also find their use here to protect the hull of the boat subject to roll due to the turbulence of the water as it advances between the quays.
Des variantes des modes de réalisation précédents peuvent être utilisées sans sortir du cadre de l'invention. Ainsi, on peut fixer le dispositif sur la coque du bateau à l'aide d'un moyen de support approprié adapté à la coque plutôt que le fixer sur le quai ou le ponton. En outre, le dispositif selon l'invention peut comporter plusieurs éléments principaux situés à l'intérieur des paliers, et en particulier dans le premier mode de réalisation où ces éléments sont cylindriques. Variants of the previous embodiments can be used without departing from the scope of the invention. Thus, one can fix the device on the hull of the boat using an appropriate support means adapted to the hull rather than fixing it on the quay or the pontoon. In addition, the device according to the invention may comprise several main elements located inside the bearings, and in particular in the first embodiment where these elements are cylindrical.

Claims

REVENDICATIONS
1. Dispositif de défense destiné à amortir les chocs et éviter l'usure d'un premier objet en mouvement relatif par rapport à un second objet (29), comprenant un élément de protection principal à symétrie axiale et de section circulaire (10) en rotation libre autour d'un axe géométrique (16) fixe par rapport à un support (18, 20, 22) solidaire de l'un ou l'autre desdits premier et second objets et présentant une dureté inférieure à celle dudit premier objet ledit dispositif étant caractérisé en ce qu' il comprend en outre deux éléments de protection secondaires en forme d'ogive à symétrie axiale et de section circulaire (12, 14) disposés à chaque extrémité dudit élément de protection principal indépendants de celui-ci et également en rotation libre autour dudit axe.1. Defense device intended to absorb shocks and prevent wear of a first object in relative motion with respect to a second object (29), comprising a main protective element with axial symmetry and circular section (10) in free rotation about a geometric axis (16) fixed relative to a support (18, 20, 22) integral with one or the other of said first and second objects and having a hardness lower than that of said first object said device being characterized in that it further comprises two secondary protective elements in the form of an ogive with axial symmetry and of circular section (12, 14) disposed at each end of said main protective element independent of it and also in rotation free around said axis.
2. Dispositif selon la revendication 1, dans lequel ledit élément de protection principal (10) est cylindrique.2. Device according to claim 1, wherein said main protective element (10) is cylindrical.
3. Dispositif selon la revendication 1, dans lequel ledit élément de protection principal (10) présente une section longitudinale curviligne approximativement dans le prolongement du profil de la section longitudinale des éléments de protection secondaires (12, 14).3. Device according to claim 1, wherein said main protective element (10) has a curvilinear longitudinal section approximately in the extension of the profile of the longitudinal section of the secondary protective elements (12, 14).
4. Dispositif selon l'une des revendications 1, 2 ou 3 dans lequel ledit élément de protection principal (10) est en rotation libre autour d'un axe métallique (30) solidaire dudit support (18, 20, 22) .4. Device according to one of claims 1, 2 or 3 wherein said main protective element (10) is in free rotation about a metal axis (30) integral with said support (18, 20, 22).
5. Dispositif selon la revendication 4, dans lequel lesdits éléments de protection secondaires (12, 14) sont également en rotation libre par rapport audit axe métallique (30) . 5. Device according to claim 4, wherein said secondary protective elements (12, 14) are also in free rotation relative to said metal axis (30).
6. Dispositif selon la revendication 1, 2 ou 3, dans lequel lesdits éléments de protection principal (10) et/ou secondaires (12, 14) sont solidaires d'un axe métallique (30) en rotation libre dans des paliers (24, 26) solidaires dudit support (18, 20, 22) .6. Device according to claim 1, 2 or 3, wherein said main protective elements (10) and / or secondary (12, 14) are integral with a metal axis (30) in free rotation in bearings (24, 26) integral with said support (18, 20, 22).
7. Dispositif selon l'une des revendications 1 à 6, dans lequel lesdits éléments de protection principal (10) et secondaires (12, 14) sont en matériau élastomère.7. Device according to one of claims 1 to 6, wherein said main protective elements (10) and secondary (12, 14) are made of elastomeric material.
8. Dispositif selon l'une des revendications 1 à 6, dans lequel lesdits éléments de protection principal (10) et secondaires (12, 14) sont creux.8. Device according to one of claims 1 to 6, wherein said main protective elements (10) and secondary (12, 14) are hollow.
9. Dispositif selon l'une des revendications 1 à 8 dans lequel ledit axe géométrique (16) est horizontal, ledit dispositif étant utilisé pour protéger la coque d'un bateau amarré à un quai ou un ponton.9. Device according to one of claims 1 to 8 wherein said geometric axis (16) is horizontal, said device being used to protect the hull of a boat moored to a quay or a pontoon.
10. Dispositif selon la revendication 9, dans lequel ledit support est formé d'une plaque de support (18) fixée au quai ou au ponton auquel est amarré le bateau et de deux branches (20, 22) pour supporter lesdits éléments de protection principal (10) et secondaires (12, 14).10. Device according to claim 9, in which said support is formed by a support plate (18) fixed to the quay or to the pontoon to which the boat is moored and by two branches (20, 22) for supporting said main protective elements. (10) and secondary (12, 14).
11. Dispositif selon la revendication 9, étant fixé sur. la coque d'un bateau à l'aide d'un moyen de support approprié adapté à la coque.11. Device according to claim 9, being fixed on. the hull of a boat using an appropriate support means adapted to the hull.
12. Dispositif selon l'une des revendications l à 8, dans lequel ledit axe géométrique (16) est vertical, ledit dispositif étant fixé à un quai d'une voie de navigation fluviale au moyen dudit support (18, 20, 22) de façon à assurer une protection de la coque d'un bateau se déplaçant le long de ladite voie. 12. Device according to one of claims l to 8, wherein said geometric axis (16) is vertical, said device being fixed to a quay of a waterway by means of said support (18, 20, 22) of so as to protect the hull of a boat moving along said track.
EP97912290A 1997-10-31 1997-10-31 Fender for protecting boat hulls against wear Withdrawn EP1024999A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1997/001951 WO1999022987A1 (en) 1997-10-31 1997-10-31 Fender for protecting boat hulls against wear

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EP1024999A1 true EP1024999A1 (en) 2000-08-09

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EP (1) EP1024999A1 (en)
AU (1) AU4953597A (en)
WO (1) WO1999022987A1 (en)

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US6196150B1 (en) 2001-03-06
AU4953597A (en) 1999-05-24
WO1999022987A1 (en) 1999-05-14

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