EP0060409B1 - Inflatable surf board - Google Patents

Inflatable surf board Download PDF

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Publication number
EP0060409B1
EP0060409B1 EP82101323A EP82101323A EP0060409B1 EP 0060409 B1 EP0060409 B1 EP 0060409B1 EP 82101323 A EP82101323 A EP 82101323A EP 82101323 A EP82101323 A EP 82101323A EP 0060409 B1 EP0060409 B1 EP 0060409B1
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EP
European Patent Office
Prior art keywords
surf
tubes
envelope
board according
several
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EP82101323A
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German (de)
French (fr)
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EP0060409A1 (en
Inventor
Willi Alfred Wald
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Individual
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Individual
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Priority to AT82101323T priority Critical patent/ATE15015T1/en
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    • 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

Definitions

  • the invention relates to a surfboard consisting of a plurality arranged essentially parallel to one another and in the longitudinal direction; hose-like pressure chambers made of flexible material, which are individually inflatable and are housed in a common flexible shell, which is stretched by the inflated hoses.
  • Such a surfboard is known (DE-A-27 00 887).
  • the shell is divided into several chambers by partitions that extend in the longitudinal direction.
  • the surfboard After -the inflation of the hoses the surfboard has a slightly ge - corrugated top and bottom because the sheath in the area of the partition walls held by them and is tensioned only in the region of the chambers.
  • this surfboard is similar to another version (US-A-2513 857) in its constructive structure in. essentially modeled on that of an air mattress. It can only be inflated with a relatively low pressure, otherwise the seams connecting the partition walls to the sheath will tear.
  • the inflated surfboard may have sufficient longitudinal stiffness, but its torsional stiffness leaves something to be desired due to the construction and the resulting limited inflation pressure.
  • the object of the invention is to improve the stiffness, in particular the torsional stiffness, of a surfboard of the type described in the introduction.
  • the inflation pressure can be increased considerably because the interconnected tubes support each other and on the cover that is stretched as a result, and because the cover no longer has intermediate walls and is only stretched by the inflated tubes.
  • the support surfaces of at least the outside hoses should expediently be arranged at an acute angle to the flat floor formed by the tensioned casing. Such an arrangement of the support surfaces in fact also influences the cross-sectional shape of the inflated tubes supported on one another and thus the cross-sectional shape of the surfboard.
  • two inner tubes are provided, the common support surface of which is arranged substantially perpendicular to the flat bottom formed by the cover, while in addition to each inner tube, an outer tube with a smaller diameter is connected via an inclined support surface.
  • the surfboard designed in this way is rigid and torsionally rigid; it has a stable footprint in the various inclination levels that are optimal for the respective driving condition, and it is also despite the comparatively high inflation pressure of z. B. 1.5 to 2 bar less dangerous for swimmers than a surfboard made of rigid material.
  • hoses and the sheath should consist of a sufficiently strong but flexible material, in particular a plastic-coated fabric.
  • the surfboard according to the invention can be designed in various ways.
  • the casing stretched over the inflated hoses can have outer stabilizing edges in the area of the flat bottom, which are preferably molded-on material reinforcements (made of flexible material). These stabilizing edges improve course stability, but hardly require any additional space on the packed surfboard.
  • openings can be provided in the area of the flat bottom for the insertion or insertion of stabilizing fins and / or a sword.
  • the feedthroughs g s for the Finns and / barren sword can be made watertight without difficulty.
  • the cover in the rear area should have a closable opening which at the same time also serves to insert or insert fins and swords or the like before the pressure chambers are inflated.
  • the invention Surfboard becomes narrower in the bow area and thereby approximates a ship shape.
  • the hoses are arranged essentially in one plane in the bow region to form a curved bottom through the casing.
  • a mast chair can be arranged on the outside on the top of the cover if the surfboard is to be used for windsurfing.
  • the surfboard shown consists in its basic structure of four tubes 1 -4 arranged in the longitudinal direction of the surfboard and a sleeve 5 surrounding the tubes.
  • Tubes 1-4 and sleeve 5 consist of a plastic-coated fabric.
  • the individual hoses 1-4 form separate pressure chambers. They have valves or the like arranged in the rear area of the surfboard, which are accessible via an opening which is arranged in the rear area of the casing 5 and can be closed watertight with a flap 6.
  • the surfboard When viewed from above, the surfboard is in the form of conventional surfboards, i.e. that is, the width of the surfboard tapers to a ship-like shape in the bow area.
  • the outside hoses 1, 4 have a smaller diameter than the inside hoses 2, 3.
  • the diameter of the inside hoses 2, 3 is about 1.5 times the outside hoses 1, 4.
  • the inflated hoses are supported on one another via essentially flat support surfaces 7, 8, 9. These support surfaces are also connecting surfaces between the respective adjacent hoses. However, it may also be sufficient if adjacent tubes are only connected to one another in a line.
  • the support surfaces 7, 9 are arranged between the outside hoses 1, 4 and their respectively adjacent inside hoses 2 and 3 at an angle to one another in such a way that, when the hoses 1 to 4 are inflated, the sheath 5 is tensioned such that a flat bottom 10 is formed.
  • the support surface 8 between the two inner tubes 2, 3 is oriented essentially perpendicular to the flat floor 10.
  • a middle standing surface 11 is created on the top of the surfboard, which extends essentially parallel to the flat bottom 10.
  • This central base 11 is followed by inclined bases 12, 13 on both sides, the inclination of which depends on the diameter ratio of the inner and outer tubes.
  • a mast chair 14 is attached between the bow and midships on the top of the shell 5, to which a mast, not shown, can be attached when the surfboard is used for windsurfing.
  • Fig.2 also shows that the shell 5 amidships and in the stern area, then in the bottom 10, lateral stabilizing edges 15, 16 which are integrally formed on the shell 5 and which can for example consist of the same material as the plastic coating of the Cover 5. These stabilizing edges serve to improve the course stability.
  • Two fins 17, 18 arranged in the rear area and a sword 19 arranged in front also contribute to improving the course stability.
  • the fins 17, 18 and the sword 19 are inserted through the opened flap 6 in the rear area into assigned through-openings, not shown, in the floor 10 and fastened watertight to the floor.
  • the sword can also extend to the upper standing surface 11 if a suitable passage is arranged between the inner tubes 2 and 3.
  • the tubes 1-4 or their longitudinal center lines in the inflated state are arranged essentially in one plane in such a way that a curved base section 20 is created.
  • two tensioning cables 21, 22 are laid in the bow area on the top of the surfboard under the cover 5, which are attached to the bow in a manner not shown and which can be tensioned amidships or in the stern area with a suitable device. By tensioning these tensioning ropes, the jump of the surfboard can be changed, as is shown in FIG. 1 on the one hand with solid lines and on the other hand with dashed lines.
  • the surfboard shown can be transported in a space-saving manner, easily installed by inserting the fins 17, 18 and / or the sword 19 and by inflating the tubes 1-4. It has great flexural rigidity in both the longitudinal and transverse directions and additionally a satisfactory torsional rigidity.
  • the surfboard can be made in different lengths and can therefore be adapted to different requirements. In any case, its driving characteristics are comparable to the driving characteristics of rigid surfboards.

Abstract

1. A surf-board consisting of serveral tubular pressure chambers of flexible material, essentially arranged in parallel to each other and in longitudinal direction, which are individually inflatable and placed in a common flexible envelope which is tensioned by the inflated tubes (1-4), characterized in that the tubes (1-4) connected with each other in longitudinal direction are plane supporting each other, and that the external tubes (1, 4) have a smaller diameter than the internal tubes (2, 3).

Description

Die Erfindung betrifft ein Surfbrett, bestehend aus mehreren im wesentlichen parallel zueinander und in Längsrichtung angeordneten; schlauchartigen Druckkammern aus flexiblem Material, die einzeln aufblasbar sind und in einer gemeinsamen flexiblen Hülle untergebracht sind, die durch die aufgeblasenen Schläuche gespannt ist.The invention relates to a surfboard consisting of a plurality arranged essentially parallel to one another and in the longitudinal direction; hose-like pressure chambers made of flexible material, which are individually inflatable and are housed in a common flexible shell, which is stretched by the inflated hoses.

Ein derartiges Surfbrett ist bekannt (DE-A-27 00 887). Bei dem bekannten Surfbrett ist die Hülle durch Zwischenwände, die sich in Längsrichtung erstrecken, in mehrere Kammern unterteilt. In jeder Kammer befindet sich ein aufblasbarer Schlauch. Alle Schläuche besitzen gleichen Durchmesser. Nach -dem Aufblasen der Schläuche besitzt das Surfbrett eine leicht ge- wellte Oberseite und Unterseite, weil die Hülle im Bereich der Zwischenwände von diesen festgehalten und nur im Bereich der Kammern gespannt wird. Damit ist dieses Surfbrett ähnlich wie eine andere Ausführung (US-A-2513 857) in seinem konstruktiven -Aufbau im. wesentlichen dem einer Luftmatratze nachempfunden. Es kann nur mit einem relativ geringen Druck aufgeblasen werden, weil sonst die die Zwischenwände mit der Hülle verbindenden Nähte reißen. Das aufgeblasene Surfbrett mag zwar eine hinreichende Längssteifigkeit besitzen, seine Torsionssteifigkeit läßt aber wegen des konstruktiven Aufbaues und des daraus resultierenden beschränkten Aufblasdrucks zu wünschen übrig.Such a surfboard is known (DE-A-27 00 887). In the known surfboard, the shell is divided into several chambers by partitions that extend in the longitudinal direction. There is an inflatable tube in each chamber. All hoses have the same diameter. After -the inflation of the hoses the surfboard has a slightly ge - corrugated top and bottom because the sheath in the area of the partition walls held by them and is tensioned only in the region of the chambers. So this surfboard is similar to another version (US-A-2513 857) in its constructive structure in. essentially modeled on that of an air mattress. It can only be inflated with a relatively low pressure, otherwise the seams connecting the partition walls to the sheath will tear. The inflated surfboard may have sufficient longitudinal stiffness, but its torsional stiffness leaves something to be desired due to the construction and the resulting limited inflation pressure.

Aufgabe der Erfindung ist es, bei einem Surfbrett der eingangs beschriebenen Gattung die Steif igkeit, insbesondere die Torsionssteifigkeit, zu verbessern.The object of the invention is to improve the stiffness, in particular the torsional stiffness, of a surfboard of the type described in the introduction.

Diese Aufgabe wird dadurch gelöst, daß die in Längsrichtung miteinander verbundenen Schläuche flächig aneinander abgestützt sind und -daß die außenseitigen Schläuche einen geringeren Durchmesser aufweisen als die inneren Schläuche.This object is achieved in that the hoses connected to one another in the longitudinal direction are supported flat against one another and that the outside hoses have a smaller diameter than the inner hoses.

Bei diesem Surfbrett kann man den Aufblasdruck ganz erheblich erhöhen, weil die miteinander verbundenen Schläuche sich gegenseitig und an der dadurch gespannten Hülle abstützen, und weil die Hülle keine Zwischenwände mehr aufweist sowie lediglich durch die aufgeblasenen Schläuche gespannt ist. Dadurch, daß die außenseitigen Schläuche einen geringeren Durchmesser aufweisen als die inneren Schläuche ergibt sich in Kombination mit dem größeren Aufblasdruck eine wesentliche Verbesserung nicht nur der Torsionssteifigkeit, sondern auch der Biegesteifigkeit in Längsrichtung und Querrichtung. Ferner erhält man zumindest an der Oberseite eine mittlere, im wesentlichen horizontale Standfläche mit daran anschließenden schrägen Standflächen, die insbesondere dann von Bedeutung sind, wenn das Surfbrett als Windsurfbrett eingesetzt wird und die damit fah- rende Person sich auf diesen schrägen Standflä- : chen abstützen kann- In der Regel wird sogar ein gesondertes Trittbrett für die mit dem Surfbrett fahrende Person überflüssig, weil die gespannte Hülle hinreichende Standfestigkeit garantiert.With this surfboard, the inflation pressure can be increased considerably because the interconnected tubes support each other and on the cover that is stretched as a result, and because the cover no longer has intermediate walls and is only stretched by the inflated tubes. The fact that the outside hoses have a smaller diameter than the inner hoses, in combination with the larger inflation pressure, results in a significant improvement not only in the torsional stiffness but also in the bending stiffness in the longitudinal and transverse directions. Furthermore, at least on the upper side there is a central, essentially horizontal standing area with adjoining sloping standing areas, which are particularly important when the surfboard is used as a windsurfing board and the person driving it is supported on these sloping standing areas In general, even a separate footboard for the person riding the surfboard becomes superfluous, because the stretched cover guarantees sufficient stability.

Ohne weiteres ist es möglich, die Schläuche in Längsrichtung derart aneinander abzustützen, daß die darüber gespannte Hülle wenigstens mittschiffs und im Heckbereich einen ebenen Boden bildet, so daß die Fahreigenschaften nicht mehr durch einen welligen Boden beeinträchtigt werden. Zweckmäßig sollten die Stützflächen wenigstens der außenseitigen Schläuche unter einem spitzen Winkel zu dem von der gespannten Hülle gebildeten ebenen Boden angeordnet sein. Durch eine derartige Anordnung der Stützflächen wird nämlich auch die Querschnittsform der aufeinander abgestützten, aufgeblasenen Schläuche und damit die Querschnittsform des Surfbrettes beeinflußt.Without further ado it is possible to support the tubes in the longitudinal direction in such a way that the cover stretched over them forms a flat floor at least amidships and in the stern area so that the driving properties are no longer impaired by a wavy floor. The support surfaces of at least the outside hoses should expediently be arranged at an acute angle to the flat floor formed by the tensioned casing. Such an arrangement of the support surfaces in fact also influences the cross-sectional shape of the inflated tubes supported on one another and thus the cross-sectional shape of the surfboard.

Bei einer bevorzugten Ausführungsform der Erfindung sind zwei innere Schläuche vorgesehen, deren gemeinsame Stützfläche im wesentlichen senkrecht zu dem von der Hülle gebildeten ebenen Boden angeordnet ist, während neben jedem inneren Schlauch jeweils ein außenseitiger Schlauch mit kfeinerem Durchmesser über eine schräge Stützfläche angeschlossen ist.In a preferred embodiment of the invention, two inner tubes are provided, the common support surface of which is arranged substantially perpendicular to the flat bottom formed by the cover, while in addition to each inner tube, an outer tube with a smaller diameter is connected via an inclined support surface.

Das so ausgebildete Surfbrett ist biegesteif und verwindungssteif; es besitzt eine stabile Standfläche in den verschiedenen, für den jeweiligen Fahrzustand optimalen Neigungsebenen, und es ist darüber hinaus trotz des vergleichsweise großen Aufblasdruckes von z. B. 1,5 bis 2 bar für Schwimmer weniger gefährlich als ein aus starrem Material hergestelltes Surfbrett.The surfboard designed in this way is rigid and torsionally rigid; it has a stable footprint in the various inclination levels that are optimal for the respective driving condition, and it is also despite the comparatively high inflation pressure of z. B. 1.5 to 2 bar less dangerous for swimmers than a surfboard made of rigid material.

Es versteht sich, daß die Schläuche und die Hülle aus einem hinreichend festen, jedoch flexiblen Material, insbesondere einem kunststoffbeschichteten Gewebe, bestehen sollte.It goes without saying that the hoses and the sheath should consist of a sufficiently strong but flexible material, in particular a plastic-coated fabric.

Das erfindungsgemäße Surfbrett kann in verschiedener Weise ausgestaltet werden. So kann die über die aufgeblasenen Schläuche gespannte Hülle im Bereich des ebenen Bodens äußere Stabilisierungskanten aufweisen, die vorzugsweise angeformte Materialverstärkungen (aus flexiblem Material) sind. Diese Stabilisierungskanten verbessern die Kursstabilität, erfordern jedoch kaum zusätzlichen Platzbedarf beim verpackten Surfbrett.The surfboard according to the invention can be designed in various ways. For example, the casing stretched over the inflated hoses can have outer stabilizing edges in the area of the flat bottom, which are preferably molded-on material reinforcements (made of flexible material). These stabilizing edges improve course stability, but hardly require any additional space on the packed surfboard.

Ferner können im Bereich des ebenen Bodens Öffnungen zum Durchstecken oder Einstecken von Stabilisierungsfinnen und/oder eines Schwertes vorgesehen sein. Die Durchführun- gen für die Finnen und/öder das Schwert können ohne Schwierigkeiten wasserdicht gemacht werden.Furthermore, openings can be provided in the area of the flat bottom for the insertion or insertion of stabilizing fins and / or a sword. The feedthroughs g s for the Finns and / barren sword can be made watertight without difficulty.

Um den Zugang zu den einzelnen Druckkammern bzw. zu deren Ventilen zu erleichten, sollte die Hülle im Heckbereich eine verschließbare Öffnung aufweisen, die gleichzeitig auch dazu dient, Finnen und Schwerter oder dergleichen vor dem Aufblasen der Druckkammern einzuführen bzw: einzustecken.In order to facilitate access to the individual pressure chambers or to their valves, the cover in the rear area should have a closable opening which at the same time also serves to insert or insert fins and swords or the like before the pressure chambers are inflated.

Es verstehtsich, daß das erfindungsgemäße Surfbrett im Bugbereich schmaler wird und dadurch einer Schiffsform angenähert wird. Außerdem kann es zweckmäßig sein, wenn die Schläuche im Bugbereich zur Bildung eines gekrümmten Bodens durch die Hülle im wesentlichen in einer Ebene angeordnet sind.It is understood that the invention Surfboard becomes narrower in the bow area and thereby approximates a ship shape. In addition, it can be expedient if the hoses are arranged essentially in one plane in the bow region to form a curved bottom through the casing.

Bei dem erfindungsgemäßen Surfbrett besteht auch die Möglichkeit, den Sprung zu verändern, wenn an der Oberseite und der Hülle wenigstens ein im Bugbereich befestigtes und mittschiffs oder im Heckbereich spannbares Spannseil angeordnet ist. Durch Veränderung der Spannung dieses Spannseiles kann der Sprung vergrößert oder verkleinert werden.In the case of the surfboard according to the invention, there is also the possibility of changing the jump if at least one tensioning rope, which is fastened in the bow area and amidships or tensionable in the stern area, is arranged on the top and the casing. The jump can be enlarged or reduced by changing the tension of this tension rope.

Außenseitig auf der Oberseite der Hülle kann ein Maststuhl angeordnet werden, wenn das Surfbrett zum Windsurfen eingesetzt werden soll.A mast chair can be arranged on the outside on the top of the cover if the surfboard is to be used for windsurfing.

Im folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; es zeigt

  • Fig. 1 in schematischer Darstellung eine Seitenansicht eines aufblasbaren Surfbrettes,
  • Fig. 2 einen Schnitt in Richtung 11-11 durch den Gegenstand nach Fig. 1,
  • Fig. 3 einen Schnitt in Richtung III-III des Gegenstandes nach Fig. 1.
In the following an embodiment of the invention shown in the drawing is explained; it shows
  • 1 is a schematic side view of an inflatable surfboard,
  • 2 shows a section in the direction 11-11 through the object according to FIG. 1,
  • 3 shows a section in the direction III-III of the object according to FIG. 1.

Das dargestellte Surfbrett besteht in seinem grundsätzlichen Aufbau aus vier in Längsrichtung des Surfbrettes angeordneten Schläuchen 1 -4 und einer die Schläuche umgebenden Hülle 5. Schläuche 1-4 und Hülse 5 bestehen aus einem kunststoffbeschichteten Gewebe. Die einzelnen Schläuche 1-4 bilden gesonderte Druckkammern. Sie besitzen im Heckbereich des Surfbrettes angeordnete Ventile oder dergleichen, die über eine im Heckbereich der Hülle 5 angeordnete, mit einer Klappe 6 wasserdicht verschließbare Öffnung zugänglich sind.The surfboard shown consists in its basic structure of four tubes 1 -4 arranged in the longitudinal direction of the surfboard and a sleeve 5 surrounding the tubes. Tubes 1-4 and sleeve 5 consist of a plastic-coated fabric. The individual hoses 1-4 form separate pressure chambers. They have valves or the like arranged in the rear area of the surfboard, which are accessible via an opening which is arranged in the rear area of the casing 5 and can be closed watertight with a flap 6.

In der Draufsicht besitzt das Surfbrett die Form üblicher Surfbretter, d. h., die Breite des Surfbrettes verjüngt sich im Bugbereich zu einer schiffsähnlichen Form.When viewed from above, the surfboard is in the form of conventional surfboards, i.e. that is, the width of the surfboard tapers to a ship-like shape in the bow area.

Wie man insbesondere den Fig. 2 und 3 entnimmt, weisen die außenseitigen Schläuche 1, 4 einen geringeren Durchmesser auf als die innenseitigen Schläuche 2, 3. Beim dargestellten Ausführungsbeispiel beträgt der Durchmesser der innenseitigen Schläuche 2, 3 etwa das 1,5fache der außenseitigen Schläuche 1, 4. Die aufgepumpten Schläuche stützen sich über im wesentlichen ebene Stützflächen 7, 8, 9 aufeinander ab. Diese Stützflächen sind gleichzeitig auch Verbindungsflächen zwischen den jeweils benachbarten Schläuchen. Es kann aber auch genügen, wenn benachbarte Schläuche lediglich linienförmig miteinander verbunden sind.2 and 3, the outside hoses 1, 4 have a smaller diameter than the inside hoses 2, 3. In the exemplary embodiment shown, the diameter of the inside hoses 2, 3 is about 1.5 times the outside hoses 1, 4. The inflated hoses are supported on one another via essentially flat support surfaces 7, 8, 9. These support surfaces are also connecting surfaces between the respective adjacent hoses. However, it may also be sufficient if adjacent tubes are only connected to one another in a line.

Bei dem dargestellten Surfbrett sind die Stützflächen 7, 9 zwischen den außenseitigen Schläuchen 1,4 und ihren jeweils benachbarten innenseitigen Schläuchen 2 bzw. 3 unter einem Winkel zueinander derart angeordnet, daß bei aufgeblasenen Schläuchen 1-4 die Hülle 5 derart gespannt wird, daß ein ebener Boden 10 gebildet wird. Dabei ist die Stützfläche 8 zwischen den beiden innenseitigen Schläuchen 2, 3 im wesentlichen senkrecht zum ebenen Boden 10 ausgerichtet.In the illustrated surfboard, the support surfaces 7, 9 are arranged between the outside hoses 1, 4 and their respectively adjacent inside hoses 2 and 3 at an angle to one another in such a way that, when the hoses 1 to 4 are inflated, the sheath 5 is tensioned such that a flat bottom 10 is formed. The support surface 8 between the two inner tubes 2, 3 is oriented essentially perpendicular to the flat floor 10.

Wegen des unterschiedlichen Durchmessers der Schläuche 1 -4 entsteht auf der Oberseite des Surfbrettes eine mittlere Standfläche 11, die sich im wesentlichen parallel zum ebenen Boden 10 erstreckt. An diese mittlere Standfläche 11 schließen sich beidseits schräge Standflächen 12, 13 an, deren Neigung vom Durchmesserverhältnis der innenseitigen und außenseitigen Schläuche abhängt.Because of the different diameters of the tubes 1 -4, a middle standing surface 11 is created on the top of the surfboard, which extends essentially parallel to the flat bottom 10. This central base 11 is followed by inclined bases 12, 13 on both sides, the inclination of which depends on the diameter ratio of the inner and outer tubes.

Wie man den Fig. 1 und 3 entnimmt, ist zwischen Bug und Mittschiff ein Maststuhl 14 auf der Oberseite der Hülle 5 befestigt, an dem sich ein nicht dargestellter Mast befestigen läßt, wenn das Surfbrett zum Windsurfen verwendet wird.1 and 3, a mast chair 14 is attached between the bow and midships on the top of the shell 5, to which a mast, not shown, can be attached when the surfboard is used for windsurfing.

Fig.2 läßt ferner erkennen, daß die Hülle 5 mittschiffs und im Heckbereich, anschließend in den Boden 10, seitliche Stabilisierungskanten 15, 16 aufweist, die an die Hülle 5 angeformt sind und die beispielsweise aus dem gleichen Material bestehen können, wie die Kunststoffbeschichtung der Hülle 5. Diese Stabilisierungskanten dienen der Verbesserung der Kursstabilität.Fig.2 also shows that the shell 5 amidships and in the stern area, then in the bottom 10, lateral stabilizing edges 15, 16 which are integrally formed on the shell 5 and which can for example consist of the same material as the plastic coating of the Cover 5. These stabilizing edges serve to improve the course stability.

Zur Verbesserung der Kursstabilität tragen auch zwei im Heckbereich angeordnete Finnen 17, 18 und ein davor angeordnetes Schwert 19 bei. Die Finnen 17, 18 und das Schwert 19 werden, solange die Schläuche 1-4 noch nicht aufgeblasen sind, durch die geöffnete Klappe 6 im Heckbereich in zugeordnete, nicht dargestellte Durchstecköffnungen im Boden 10 gesteckt und wasserdicht am Boden befestigt. Gegebenenfalls kann das Schwert sich auch bis zur oberen Standfläche 11 erstrecken, wenn eine geeignete Durchführung zwischen den innenseitigen Schläuchen 2 und 3 angeordnet wird.Two fins 17, 18 arranged in the rear area and a sword 19 arranged in front also contribute to improving the course stability. As long as the hoses 1-4 are not yet inflated, the fins 17, 18 and the sword 19 are inserted through the opened flap 6 in the rear area into assigned through-openings, not shown, in the floor 10 and fastened watertight to the floor. If necessary, the sword can also extend to the upper standing surface 11 if a suitable passage is arranged between the inner tubes 2 and 3.

Im Bugbereich (Fig. 3) sind die Schläuche 1-4 bzw. ihre Längsmittellinien in aufgeblasenem Zustand im wesentlichen in einer Ebene derart angeordnet, daß ein gewölbter Bodenabschnitt 20 entsteht. Außerdem sind im Bugbereich an der Oberseite des Surfbrettes unter der Hülle 5 zwei Spannseile 21, 22 verlegt, die am Bug in nicht dargestellter Weise befestigt sind und die mittschiffs oder im Heckbereich mit einer geeigneten Einrichtung spannbar sind. Durch Spannen dieser Spannseile läßt sich der Sprung des Surfbrettes verändern, wie das in Fig. 1 einerseits mit ausgezogenen und andererseits mit gestrichelten Linien dargestellt ist.In the bow region (FIG. 3), the tubes 1-4 or their longitudinal center lines in the inflated state are arranged essentially in one plane in such a way that a curved base section 20 is created. In addition, two tensioning cables 21, 22 are laid in the bow area on the top of the surfboard under the cover 5, which are attached to the bow in a manner not shown and which can be tensioned amidships or in the stern area with a suitable device. By tensioning these tensioning ropes, the jump of the surfboard can be changed, as is shown in FIG. 1 on the one hand with solid lines and on the other hand with dashed lines.

Das dargestellte Surfbrett läßt sich raumsparend transportieren, durch Einsetzen der Finnen 17, 18 und/oder des Schwertes 19 sowie durch Aufblasen der Schläuche 1-4 leicht montieren. Es besitzt eine große Biegesteifigkeit sowohl in Längsrichtung als auch in Querrichtung und zusätzlich eine befriedigende Torsionssteifigkeit. Das Surfbrett läßt sich in verschiedenen Längen herstellen und kann damit unterschiedlichen Ansprüchen angepaßt werden. Seine Fahreigenschaften sind in jedem Fall mit den Fahreigenschaften starrer Surfbretter vergleichbar.The surfboard shown can be transported in a space-saving manner, easily installed by inserting the fins 17, 18 and / or the sword 19 and by inflating the tubes 1-4. It has great flexural rigidity in both the longitudinal and transverse directions and additionally a satisfactory torsional rigidity. The surfboard can be made in different lengths and can therefore be adapted to different requirements. In any case, its driving characteristics are comparable to the driving characteristics of rigid surfboards.

Claims (12)

1. A surf-board consisting of serveral tubular pressure chambers of flexible material, essentially arranged in parallel to each other and in longitudinal direction, which are individually inflatable and placed in a common flexible envelope which is tensioned by the inflated tubes (1-4), characterized in that the tubes (1-4) connected with each other in longitudinal direction are plane supporting each other, and that the external tubes (1,4) have a smaller diameter than the internal tubes (2, 3).
2. A surf-board according to claim 1, characterized in that the tubes (1-4) are supported to each other in such a way that the envelope (5) drawn over them forms a level floor (10) at least midship and within the range of the stern.
3. A surf-board according to claim 1 or 2, characterized in that the supporting planes (7, 9), at least those of the external tubes (1, 4), are arranged with an acute angle to the level floor (10) formed by the stretched envelope (5).
4. A surf-board according to one or several of the claims 1-3, characterized in that two internal tubes (2, 3) are provided, the common supporting plane (8) of which being essentially arranged vertically to the level floor (10) formed by the envelope (5), and that an external tube (1 or 4, ressectively) with smaller diameter is arranged in any case collaterally to each internal tube (2 or 3, respectively).
5. A surf-board according to one or several of the claims 1-4, characterized in that the envelope (5) drawn over the inflated tubes (1-4) is provided with external stabilization edges (15, 16) within the range of the lever floor (10).
6. A surf-board according to claim 5, characterized in that the stabilizing edges (15, 16) are reinforcements of the same material formed on to the envelope (5).
7. A surf-board according to one or several of the claims 1-6, characterized in that the envelope (5) is provided with a lock-up opening (6) within the range of the stern.
8. A surf-board according to one or several of the claims 1-7, characterized in that inlets for pushing through or insertion of stabilizing fins (17, 18) and/or of a center-board (19) are provided within the range of the lever floor (10).
9. A surf-board acccording to one or several of the claims 1 -8, characterized in that the tubes (1-4) for forming a curved floor (20) by the envelope (5) within the range of the bow are essentially arranged on one level.
10. A surf-board according to one or several of the claims 1-9, characterized in that at least one tensioning rope (21, 22) is attached at the upper side below the envelope (5) within the range of the bow and is tensible midship or within the range of the stern.
11. a surf-board according to one or several of the claims 1-10, characterized in that a mast support (14) is arranged outside on the top surface of the envelope (5).
12. A surf-board according to one or several of the claims 1-11, characterized in that the tubes (1-4) and the envelope (5) are made of a plastics coated fabric.
EP82101323A 1981-03-10 1982-02-20 Inflatable surf board Expired EP0060409B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82101323T ATE15015T1 (en) 1981-03-10 1982-02-20 INFLATABLE SURFBOARD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3109016 1981-03-10
DE3109016A DE3109016C2 (en) 1981-03-10 1981-03-10 Sail or surf board

Publications (2)

Publication Number Publication Date
EP0060409A1 EP0060409A1 (en) 1982-09-22
EP0060409B1 true EP0060409B1 (en) 1985-08-21

Family

ID=6126801

Family Applications (1)

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EP82101323A Expired EP0060409B1 (en) 1981-03-10 1982-02-20 Inflatable surf board

Country Status (3)

Country Link
EP (1) EP0060409B1 (en)
AT (1) ATE15015T1 (en)
DE (2) DE3109016C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003055742A1 (en) * 2001-12-24 2003-07-10 Midamarine Pty Ltd Surfcraft
CN109969352A (en) * 2017-12-27 2019-07-05 佛山市维特拉体育用品有限公司 Inflate surfboard
WO2023281219A1 (en) * 2021-07-08 2023-01-12 Vanoise Jean Luc Inflatable craft, in particular of the canoe type, and method for manufacturing said craft

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333473C2 (en) * 1983-09-16 1985-11-21 Deutsche Schlauchbootfabrik Hans Scheibert GmbH & Co KG, 3456 Eschershausen Collapsible sailing board
GB2161428B (en) * 1984-07-11 1988-05-18 Gilbert Marcus Filshie Sail board
GB8505971D0 (en) * 1985-03-07 1985-04-11 Richards P A Inflatable sailboard
FR2978115A1 (en) * 2011-07-22 2013-01-25 Joel Guilloux Inflatable board e.g. surfboard, for sports or leisure purposes, has pocket comprising blocking unit to block slipping of plate and opening to allow installation and removal of plate, where blocking unit includes hook-and-loop fastener
DE102012103948A1 (en) * 2012-05-04 2013-11-07 Stefan Klare voxel
DE202014006268U1 (en) 2014-08-03 2014-08-27 Steffen Born Inflatable water board in sandwich construction
DE102014011495A1 (en) 2014-08-03 2016-02-04 Steffen Born Inflatable water board in sandwich construction
DE102016108635B4 (en) * 2016-05-10 2019-08-29 Stefan Klare Method for producing a gas-inflatable volume element, in particular a water sports device
DE102019118436A1 (en) 2019-07-08 2021-01-14 Stefan Klare Volume element, in particular water sports equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513857A (en) * 1946-02-05 1950-07-04 Conrad W Friedrich Pneumatic surfboard
IT1084003B (en) * 1976-01-09 1985-05-25 Carn Patrick REFINEMENTS MADE TO FLOATING BODIES, IN PARTICULAR SAIL BOARDS
DE2700887A1 (en) * 1977-01-11 1978-07-20 Manfred Dipl Ing Meyer WINDSURFER
DE2742989A1 (en) * 1977-09-22 1979-04-05 Herbert Heuschkel Inflatable light-weight wind-surfer - has separate buoyancy compartments mounted inside demountable frame

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003055742A1 (en) * 2001-12-24 2003-07-10 Midamarine Pty Ltd Surfcraft
CN109969352A (en) * 2017-12-27 2019-07-05 佛山市维特拉体育用品有限公司 Inflate surfboard
WO2023281219A1 (en) * 2021-07-08 2023-01-12 Vanoise Jean Luc Inflatable craft, in particular of the canoe type, and method for manufacturing said craft
FR3125013A1 (en) * 2021-07-08 2023-01-13 Jean-Luc VANOISE Inflatable craft, in particular of the canoe type, and method of manufacturing said craft.

Also Published As

Publication number Publication date
DE3109016A1 (en) 1982-10-14
ATE15015T1 (en) 1985-09-15
EP0060409A1 (en) 1982-09-22
DE3265512D1 (en) 1985-09-26
DE3109016C2 (en) 1983-02-24

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