EP0299958B1 - Surf-board - Google Patents

Surf-board Download PDF

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Publication number
EP0299958B1
EP0299958B1 EP87902046A EP87902046A EP0299958B1 EP 0299958 B1 EP0299958 B1 EP 0299958B1 EP 87902046 A EP87902046 A EP 87902046A EP 87902046 A EP87902046 A EP 87902046A EP 0299958 B1 EP0299958 B1 EP 0299958B1
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EP
European Patent Office
Prior art keywords
tongue
surfboard
stringer
surfboard according
supports
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.)
Expired - Lifetime
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EP87902046A
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German (de)
French (fr)
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EP0299958A1 (en
Inventor
Dirk Engelmann
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Individual
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Individual
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Priority claimed from DE3610043A external-priority patent/DE3610043C1/en
Priority claimed from DE19863635802 external-priority patent/DE3635802A1/en
Application filed by Individual filed Critical Individual
Priority to AT87902046T priority Critical patent/ATE72549T1/en
Publication of EP0299958A1 publication Critical patent/EP0299958A1/en
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Publication of EP0299958B1 publication Critical patent/EP0299958B1/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
    • 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
    • B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor

Definitions

  • the invention relates to a surfboard, the rear area of which ends in a vertically narrow, flexible tongue which is influenced in its elasticity by a tensioning device and has an elastic covering layer on its upper side, the tensioning device being arranged one behind the other in the longitudinal direction of the surfboard , Above the tongue arranged supports, of which the front is largely rigid with respect to the tongue and the rear extends from the tongue, there is a connection between the supports and an elastic element.
  • the rear support is movable with respect to the tongue.
  • the connection between the supports is a rigid arm of a two-armed lever, the second arm of which projects forward from the front support.
  • the elastic element in the form of a spring is located between the front end of the arm projecting forward and a floor which is arranged a short distance above the tongue.
  • the two-armed lever used here has problems with it: on the one hand, the lever must be very strong in the rotating area, because considerable bending forces act there.
  • the bearing of the two-armed lever is subject to considerable signs of wear if it is not a special bearing (ball bearing or the like). But if a special warehouse is used, the surfboard becomes complicated and expensive. One must not mistake that the lever is subject to constant back and forth movements of larger and smaller dimensions when using the board. Finally, the bearing will give rise to noise when using a simple spigot detector, which should primarily be thought of.
  • the known design is only possible with a short, flexible rear: If the rear were extended, the forces that the spring would have to absorb would be correspondingly greater. In practice, this increase in forces could not be compensated for, or only with other disadvantages: the weight of the various parts would increase accordingly, and / or the height of the board would increase accordingly, at least in the spring area.
  • the invention has for its object to design the surfboard mentioned in such a way that the two-armed lever with bearing comes to an end.
  • the rear support is rigid with respect to the tongue
  • the front support from the tongue or in front of the surfboard and the elastic element is arranged in the form of an inherently elastic or an elastically sprung stringer between the supports.
  • a surfboard designed in this way does not have a two-armed lever with a bearing. Accordingly, all the disadvantages mentioned, namely wear and noise (if it is a simple journal bearing) or more expensive (if it is a special bearing) and increasing the mass, because the lever in the bearing area must be very strong, are eliminated.
  • the rear can be made (considerably) longer than in the known case: If the rear is extended, the weight and space problems mentioned do not occur.
  • a further development of the invention is that the space above the tongue is filled with highly elastic material. That brings among other things the advantage that the feet of the surfer are cushioned, which is perceived as pleasant.
  • tongue-fixed or stringer-fixed bases are located below the stringer, which end at a short distance from the stringer or the tongue. In this way it is achieved that a downward bending of the tongue is limited.
  • Figures 1 and 2 show the rear end of a surfboard according to the invention.
  • This consists of a tongue 1, two supports 2 and 3, a stringer 4 clamped between the supports 2 and 3, an elastic buffer 5 between the stringer 4 and the support 2, highly elastic filler material 6 above the tongue 1 (in FIG. 2) the material omitted) and loops 7 and 8 for holding the surfer's feet.
  • the stringer 4 is mounted so as to be longitudinally displaceable relative to the support 2 by means of a bolt 9 which is inserted into slots 10 of two brackets 11 which are fixed to the support. It is supported by a plate 12 on the rubber buffer 5, which in turn rests with the front end of the support 2.
  • the rubber buffer 5 thus causes an elastic mounting of the stringer 4 in the longitudinal direction of the board.
  • FIG 3 shows this storage in detail.
  • the rubber buffer 5 is pulled through by a screw 13.
  • a nut 14 sits on the screw 13.
  • the rubber buffer 5 has a biconvex shape in the unloaded state.
  • the two convex surfaces can be pressed together by means of the screw 13 and the nut 14. In this way it is possible to adjust the elasticity of the rubber buffer 5.
  • Figures 4 and 5 show the rear of another embodiment.
  • This consists of a tongue 1, a bearing arm 15, two stringers 4, two elastic buffers 16, tongue-fixed bases 17, spring washers 18 between the stringers 4 and the tongue 1 and cross struts 19 between the stringers 4.
  • the association consisting of the stringer 4 and the buffer 16, is clamped between the bearing arm 15 and a base 20.
  • the latter is located in a board surface that runs vertically or at an angle.
  • the springs 18 are connected to the stringer by screws 21. These screws make it possible to change the distance between the springs 18 and the stringers 4 and in this way to adjust the spring force of the springs 18.
  • Two successively arranged foot straps are located between the bearing arm 15 and the adjacent cross strut 19 on the one hand and the two cross struts 19 on the other.
  • the space above the tongue 1 is filled with highly elastic material.
  • a buffer 16 can be adjustable in terms of its elasticity. On the other hand, it can also be missing. Then, however, the stringer 4 should be elastic in itself. It is also conceivable that there is a distance between the stringer 4 and the bearing 20 or the buffer 16 in the basic position of the board, in such a way that the bending and torsional forces are applied only by the tongue and stringer in an initial bending region of the tongue and stop surface serve as a limit for bending.
  • Figures 6 and 7 show an embodiment, which is characterized in that a tail corresponding to the design according to the invention retrofitted to a surf conventional type, in which the tail has been cut off, has been applied.
  • the tongue 1 protrudes further forward than the rest of the tail.
  • Your protruding part is attached to the remaining part of the surfboard by means of dowels 22.
  • tabs 23 on which the stringers 4 are fastened protrude from this remaining part.
  • 17 are again tongue-proof bases, 18 adjustable springs (in this case coil springs), 19 a cross strut and 8 a foot strap.
  • the rear surface of the remaining part of the surfboard is provided with a layer 24 of high-strength plastic.
  • the stringers 4 are connected to the tabs 23 via rubber buffers 25.
  • These buffers have the shape of curved cuboids. They can be pressed together by means of screws 26 in such a way that they approach an unbent cuboid. In this way, the elasticity of the rubber buffers can be increased.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
  • Vibration Dampers (AREA)
  • Reinforced Plastic Materials (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

PCT No. PCT/DE87/00121 Sec. 371 Date Sep. 16, 1988 Sec. 102(e) Date Sep. 16, 1988 PCT Filed Mar. 19, 1987 PCT Pub. No. WO87/05526 PCT Pub. Date Sep. 24, 1987.The present invention provides a surfboard which includes, in the lower aft region, a vertically narrow flexible tongue, the bending range of which is restricted by an elastic device, and, in the upper aft region, a covering material. Two supports are arranged one behind the other in the surfboard's longitudinal direction. A rear support is secured to the tongue, and a forward support is located in the region of the forward end of the tongue or in front of the tongue. A stringer is provided for elastically connecting the front and rear supports. The surfboard provides a simple and space-saving design.

Description

Die Erfindung bezieht sich auf ein Surfbrett, dessen Heckbereich in eine in vertikaler Richtung schmale, biegsame Zunge ausläuft, die durch eine Spannvorrichtung in ihrer Elastizität beeinflußt wird und auf ihrer Oberseite eine elastische Abdeckschicht aufweist, wobei die Spannvorrichtung aus zwei vertikalen, in Surfbrettlängsrichtung hintereinander angeordneten, oberhalb der Zunge angeordneten Stützen, von denen die vordere weitgehend starr gegenüber der Zunge ist und die hintere von der Zunge abgeht, einer Verbindung zwischen den Stützen und einem elastischen Element besteht.The invention relates to a surfboard, the rear area of which ends in a vertically narrow, flexible tongue which is influenced in its elasticity by a tensioning device and has an elastic covering layer on its upper side, the tensioning device being arranged one behind the other in the longitudinal direction of the surfboard , Above the tongue arranged supports, of which the front is largely rigid with respect to the tongue and the rear extends from the tongue, there is a connection between the supports and an elastic element.

Bei einem bekannten Surfbrett dieser Art (US-A- 3 902 207) ist die hintere Stütze beweglich gegenüber der Zunge. Außerdem ist die Verbindung zwischen den Stützen ein starrer Arm eines zweiarmigen Hebels, dessen zweiter Arm von der vorderen Stütze aus nach vorne ragt. Das elastische Element in Form einer Feder befindet sich zwischen dem vorderen Ende des nach vor ragenden Armes und einem Boden, der im geringen Abstand oberhalb der Zunge angeordnet ist.In a known surfboard of this type (US-A-3 902 207) the rear support is movable with respect to the tongue. In addition, the connection between the supports is a rigid arm of a two-armed lever, the second arm of which projects forward from the front support. The elastic element in the form of a spring is located between the front end of the arm projecting forward and a floor which is arranged a short distance above the tongue.

Der hierbei verwendete zweiarmige Hebel bringt Probleme mit sich: Einerseits muß der Hebel im Drehbereich sehr kräftig ausgebildet sein, weil dort enhebliche Biegekräfte wirken. Andererseits ist das Lager des zweiarmigen Hebels beachtlichen Verschleißerscheinungen unterworfen, wenn es nicht ein Speziallager (Kugellager od.dgl.) ist. Wenn aber ein Speziallager verwendet wird, so verkompliziert und verteuert sich hierdurch das Surfbrett. Man darf ja nicht verkennen, daß der Hebel bei Benutzung des Brettes ständigen Hin- und Herbewegungen größeren und kleineren Ausmaßes unterworfen ist. Schließlich wird das Lager bei Verwendung eines einfachen Zapfenlargers, woran primär gedacht sein dürfte, zu Geräuschen Anlaß geben. Vor allen Dingen aber ist die bekannte Konstruktion nur bei einem kurzen, biegsamen Heck möglich: Bei Verlängerung des Hecks würden die Kräfte, die die Feder aufzunehmen hätte, entsprechend größer werden. Diese Kräftevergrößerung ließe sich in der Praxis nicht oder nur unter Eingehung anderer Nachteile auffangen: Das Gewicht der verschiedenen Teile würde sich entsprechend vergrößern, und/oder die Höhe des Brettes würde sich mindestens im Federbereich entsprechend vergrößern.The two-armed lever used here has problems with it: on the one hand, the lever must be very strong in the rotating area, because considerable bending forces act there. On the other hand, the bearing of the two-armed lever is subject to considerable signs of wear if it is not a special bearing (ball bearing or the like). But if a special warehouse is used, the surfboard becomes complicated and expensive. One must not mistake that the lever is subject to constant back and forth movements of larger and smaller dimensions when using the board. Finally, the bearing will give rise to noise when using a simple spigot detector, which should primarily be thought of. Above all, however, the known design is only possible with a short, flexible rear: If the rear were extended, the forces that the spring would have to absorb would be correspondingly greater. In practice, this increase in forces could not be compensated for, or only with other disadvantages: the weight of the various parts would increase accordingly, and / or the height of the board would increase accordingly, at least in the spring area.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs erwähnte Surfbrett derart auszubilden, daß der zweiarmige Hebel mit Lager in Fortfall kommt.The invention has for its object to design the surfboard mentioned in such a way that the two-armed lever with bearing comes to an end.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die hintere Stütze starr gegenüber der Zunge ist, die vordere Stütze von der Zunge oder davor vom Surfbrett abgeht und das elastische Element in Form eines in sich elastischen oder eines elastisch abgefederten Stringers zwischen den Stützen angeordnet ist.This object is achieved in that the rear support is rigid with respect to the tongue, the front support from the tongue or in front of the surfboard and the elastic element is arranged in the form of an inherently elastic or an elastically sprung stringer between the supports.

Ein in dieser Weise ausgebildetes Surfbrett hat keinen zweiarmigen Hebel mit Lager. Demgemäß fallen alle erwähnten Nachteile, nämlich Verschleiß und Geräusch (wenn es sich um ein einfaches Zapfenlager handelt) oder Verteuerung (wenn es sich um Speziallager handelt) und Erhöhung der Masse, weil der Hebel im Lagerbereich sehr kräftig ausgebildet sein muß, fort. Hinzu kommt, daß man das Heck (erheblich) länger als im bekannten Fall gestalten kann: Bei einer Verlängerung des Hecks treten die erwähnten Gewichts- und Raumprobleme nicht auf.A surfboard designed in this way does not have a two-armed lever with a bearing. Accordingly, all the disadvantages mentioned, namely wear and noise (if it is a simple journal bearing) or more expensive (if it is a special bearing) and increasing the mass, because the lever in the bearing area must be very strong, are eliminated. In addition, the rear can be made (considerably) longer than in the known case: If the rear is extended, the weight and space problems mentioned do not occur.

Es sei erwähnt, daß ein weiteres Surfbrett bekannt ist (US-A- 3 988 794), das zwar in Einzelheiten anders ausgebildet ist als das Surfbrett gemäß der US-A 3 902 207 und insofern nicht unter den Oberbegriff des Anspruchs 1 fällt, das aber mit einem zweiarmigen Hebel als Spannvorrichtung für eine schmale Zunge im Heckbereich des Surfbrettes arbeitet. Für dieses Surfbrett gelten demgemäß die gleichen Nachteile wie für das Surfbrett gemäß der US-A- 3 902 207.It should be mentioned that a further surfboard is known (US-A-3 988 794), which is designed differently in details than the surfboard according to US-A-3 902 207 and therefore does not fall under the preamble of claim 1 but works with a two-armed lever as a clamping device for a narrow tongue in the rear area of the surfboard. Accordingly, the same disadvantages apply to this surfboard as to the surfboard according to US Pat. No. 3,902,207.

Eine Weiterentwicklung der Erfindung besteht darin, daß der Raum oberhalb der Zunge von hochelastischem Material ausgefüllt ist. Das bringt u.a. den Vorteil mit sich, daß die Füße des Surfers abgefedert stehen, was als angenehm empfunden wird.A further development of the invention is that the space above the tongue is filled with highly elastic material. That brings among other things the advantage that the feet of the surfer are cushioned, which is perceived as pleasant.

Weiterhin wird vorgeschlagen, daß sich unterhalb des Stringers zungenfeste oder stringerfeste Sockel befinden, die in geringem Abstand von dem Stringer oder der Zunge enden. Auf diese Weise wird erreicht, daß eine Verbiegung der Zunge nach unten begrenzt ist.Furthermore, it is proposed that tongue-fixed or stringer-fixed bases are located below the stringer, which end at a short distance from the stringer or the tongue. In this way it is achieved that a downward bending of the tongue is limited.

Ferner ist es zweckmäßig, wenn sich zwischen der Zunge und dem Stringer Federn befinden, die vorzugsweise hinsichtlich der Federcharakteristik verstellbar sind. Diese Maßnahme dient der Beeinflussung der Biegelinie der Zunge bei Verbiegung derselben nach oben oder unten.It is also expedient if there are springs between the tongue and the stringer, which are preferably adjustable with regard to the spring characteristic. This measure serves to influence the bending line of the tongue when the tongue is bent upwards or downwards.

Weitere Einzelheiten der Erfindung ergeben sich aus der Zeichnung.Further details of the invention emerge from the drawing.

Darin zeigen:

  • Fig. 1 einen Schnitt gemäß der Linie II-II der Fig. 2 durch eine erste Ausführungsform der Erfindung,
  • Fig. 2 eine Draufsicht dieser ersten Ausführungsform,
  • Fig. 3 eine Einzelheit in vertikalem Schnitt,
  • Fig. 4 einen Schnitt gemäß der Linie IV-IV der Fig. 5 durch eine zweite Ausführungsform der Erfindung,
  • Fig. 5 eine Draufsicht dieser zweiten Ausführungsform,
  • Fig. 6 einen Schnitt gemäß der Linie VI-VI der Fig. 7 durch eine dritte Ausführungsform der Erfindung und
  • Fig. 7 eine Draufsicht dieser dritten Ausführungsform.
In it show:
  • 1 shows a section along the line II-II of FIG. 2 through a first embodiment of the invention,
  • 2 is a top view of this first embodiment;
  • 3 shows a detail in vertical section,
  • 4 shows a section along the line IV-IV of FIG. 5 through a second embodiment of the invention,
  • 5 is a top view of this second embodiment;
  • Fig. 6 is a section along the line VI-VI of Fig. 7 through a third embodiment of the invention and
  • Fig. 7 is a plan view of this third embodiment.

Die Figuren 1 und 2 zeigen das hintere Ende eines erfindungsgemäßen Surfbrettes. Dieses besteht aus einer Zunge 1, zwei Stützen 2 und 3, einem zwischen den Stützen 2 und 3 eingespannten Stringer 4, einem elastischen Puffer 5 zwischen dem Stringer 4 und der Stütze 2, hochelastischem Ausfüllmaterial 6 oberhalb der Zunge 1 (in Fig. 2 ist das Material weggelassen) und Schlaufen 7 und 8 zum Halten der Füße des Surfers. Der Stringer 4 ist über einen Bolzen 9, der in Schlitze 10 zweier stützenfester Laschen 11 steckt, gegenüber der Stütze 2 längsverschieblich gelagert. Er stützt sich über eine Platte 12 an dem Gummipuffer 5 ab, der seinerseits mit seinem vorderen Ende der Stütze 2 anliegt. Der Gummipuffer 5 bewirkt also eine elastische Lagerung des Stringers 4 in Brettlängsrichtung.Figures 1 and 2 show the rear end of a surfboard according to the invention. This consists of a tongue 1, two supports 2 and 3, a stringer 4 clamped between the supports 2 and 3, an elastic buffer 5 between the stringer 4 and the support 2, highly elastic filler material 6 above the tongue 1 (in FIG. 2) the material omitted) and loops 7 and 8 for holding the surfer's feet. The stringer 4 is mounted so as to be longitudinally displaceable relative to the support 2 by means of a bolt 9 which is inserted into slots 10 of two brackets 11 which are fixed to the support. It is supported by a plate 12 on the rubber buffer 5, which in turn rests with the front end of the support 2. The rubber buffer 5 thus causes an elastic mounting of the stringer 4 in the longitudinal direction of the board.

Figur 3 zeigt diese Lagerung im einzelnen. Der Gummipuffer 5 wird von einer Schraube 13 durchzogen. Auf der Schraube 13 sitzt eine Mutter 14. Der Gummipuffer 5 hat im unbelasteten Zustand eine bikonvexe Form. Die beiden konvexen Flächen können mittels der Schraube 13 und der Mutter 14 zusammengedrückt werden. Auf diese Weise ist es möglich, die Elastizität des Gummipuffers 5 zu verstellen.Figure 3 shows this storage in detail. The rubber buffer 5 is pulled through by a screw 13. A nut 14 sits on the screw 13. The rubber buffer 5 has a biconvex shape in the unloaded state. The two convex surfaces can be pressed together by means of the screw 13 and the nut 14. In this way it is possible to adjust the elasticity of the rubber buffer 5.

Die Figuren 4 und 5 zeigen das Heck einer anderen Ausführungsart. Diese besteht aus einer Zunge 1, einem Lagerarm 15, zwei Stringern 4, zwei elastischen Puffern 16, zungenfesten Sockeln 17, Federringen 18 zwischen den Stringern 4 und der Zunge 1 und Querstreben 19 zwischen den Stringern 4. Der Verband, bestehend aus dem Stringer 4 und dem Puffer 16, ist jeweils zwischen dem Lagerarm 15 und einem Stützpunkt 20 eingespannt. Letzterer befindet sich in einer Brettfläche, die vertikal oder schräg verläuft. Die Federn 18 sind über Schrauben 21 mit dem Stringer verbunden. Diese Schrauben ermöglichen es, den Abstand zwischen den Federn 18 und den Stringern 4 zu verändern und auf diese Weise die Federkraft der Federn 18 zu verstellen. Zwei hintereinander angeordnete, nicht dargestellte Fußschlaufen befinden sich zwischen dem Lagerarm 15 und der benachbarten Querstrebe 19 einerseits und den beiden Querstreben 19 andererseits. Der Raum oberhalb der Zunge 1 ist mit hochelastischem Material aus gefüllt.Figures 4 and 5 show the rear of another embodiment. This consists of a tongue 1, a bearing arm 15, two stringers 4, two elastic buffers 16, tongue-fixed bases 17, spring washers 18 between the stringers 4 and the tongue 1 and cross struts 19 between the stringers 4. The association consisting of the stringer 4 and the buffer 16, is clamped between the bearing arm 15 and a base 20. The latter is located in a board surface that runs vertically or at an angle. The springs 18 are connected to the stringer by screws 21. These screws make it possible to change the distance between the springs 18 and the stringers 4 and in this way to adjust the spring force of the springs 18. Two successively arranged foot straps, not shown, are located between the bearing arm 15 and the adjacent cross strut 19 on the one hand and the two cross struts 19 on the other. The space above the tongue 1 is filled with highly elastic material.

Ein Puffer 16 kann hinsichtlich seiner Elastizität einstellbar sein. Er kann andererseits auch fehlen. Dann sollte allerdings der Stringer 4 in sich elastisch sein. Auch ist es denkbar, daß zwischen dem Stringer 4 und dem Lager 20 bzw. dem Puffer 16 in der Grundstellung des Brettes ein Abstand herrscht, dergestalt, daß in einem Anfang Biegebereich der Zunge die Biege- und Torsionskräfte allein von der Zunge aufgebracht werden und Stringer und Anschlag-fläche als Biegebegrenzung dienen.A buffer 16 can be adjustable in terms of its elasticity. On the other hand, it can also be missing. Then, however, the stringer 4 should be elastic in itself. It is also conceivable that there is a distance between the stringer 4 and the bearing 20 or the buffer 16 in the basic position of the board, in such a way that the bending and torsional forces are applied only by the tongue and stringer in an initial bending region of the tongue and stop surface serve as a limit for bending.

Die Figuren 6 und 7 zeigen eine Ausführungsform, die dadurch gekennzeichnet ist, daß ein Heck entsprechend der erfindungsgemäßen Ausbildung nachträglich an ein Surfbreit herkömmlicher Art, bei dem das Heck abgeschnitten worden ist, angesetzt worden ist. Die Zunge 1 steht nach vorn weiter über als der übrige Teil des Hecks. Ihr überstehender Teil ist mittels Dübel 22 an dem restlichen Teil des Surfbrettes befestigt. Außerdem ragen aus diesem restlichen Teil nach hinten Laschen 23, an denen die Stringer 4 befestigt sind. Mit 17 sind wieder zungenfeste Sockel, mit 18 einstellbare Federn (in diesem Falle Schraubenfedern), mit 19 eine Querstrebe und mit 8 eine Fußschlaufe bezeichnet. Die hintere Fläche des restlichen Teils des Surfbrettes ist durch eine Schicht 24 aus hochfestem Kunststoff versehen.Figures 6 and 7 show an embodiment, which is characterized in that a tail corresponding to the design according to the invention retrofitted to a surf conventional type, in which the tail has been cut off, has been applied. The tongue 1 protrudes further forward than the rest of the tail. Your protruding part is attached to the remaining part of the surfboard by means of dowels 22. In addition, tabs 23 on which the stringers 4 are fastened protrude from this remaining part. 17 are again tongue-proof bases, 18 adjustable springs (in this case coil springs), 19 a cross strut and 8 a foot strap. The rear surface of the remaining part of the surfboard is provided with a layer 24 of high-strength plastic.

Die Stringer 4 sind über Gummipuffer 25 mit den Laschen 23 verbunden. Diese Puffer haben die Form gebogener Quader. Sie können mittels Schrauben 26 derart zusammengedrückt werden, daß sie sich einem ungebogenen Quader annähern. Auf diese Weise ist die Elastizität der Gummipuffer erhöhbar.The stringers 4 are connected to the tabs 23 via rubber buffers 25. These buffers have the shape of curved cuboids. They can be pressed together by means of screws 26 in such a way that they approach an unbent cuboid. In this way, the elasticity of the rubber buffers can be increased.

Claims (21)

1. A surfboard, the aft region of which terminating in a in the vertical direction narrow flexible tongue which is effected in its elasticity by an elastic device and has an elastic covering material on top, whereby the elastic device consists of two vertical supports (2;20;23 resp. 3;15) arranged in succession in the longitudinal direction of the surfboard above the tongue (1), the forward one (2;20;23) of said supports is largely inflexible against the tongue (1) and the rear one (3;15) of said supports extends from the tongue (1), a connection between the supports (2;20;23 resp. 3;15) and an elastic element, characterized in that the rear support (3;15) is inflexible against the tongue (1), that the forward support (2;20;23) leaves the surfboard from the tongue (1) or in front of said tongue and that the elastic element is arranged in form of a stringer (4), which is intrinsically elastic or is mounted elastically, between the supports (22,3;20,15;23).
2. A surfboard according to claim 1, characterized in that the space above the tongue (1) is filled with highly elastic material (6).
3. A surfboard according to claim 1 or 2, characterized in that the elastic mounting (5;16;25) of the stringer (4) on the supports is adjustable.
4. A surfboard according to one of claims 1 to 3, characterized in that a spring part ( 5;16;25) is arranged in the longitudinal direction of the stringer (4) in front of said stringer at the forward support (2;20;23).
5. A surfboard according to claim 3 or 4, characterized in that a spring part (5;16;25) is an elastic body which is deformable by means of a tension screw (13;26).
6. A surfboard according to claim 5, characterized in that the body (5) has a tension screw (13) passing through it and in the non-loaded state is convex on both sides in the direction of compression.
7. A surfboard according to claim 5, characterized in that the body (25), in the non-loaded state, corresponds to a curved cuboid and, when deformed by means of the tension scew (26), approximates to the non-curved cuboid form.
8. A surfboard according to one of claims 1 to 7, characterized in that the stringer (4) has a vertical distance from the tongue (1).
9. A surfboard according to one of claims 1 to 8, characterized in that the forward support (20;23) is incorporated in the board part located in front of the tongue (1).
10. A surfboard according to one of claims 1 to 9, characterized in that underneath the stringer (4) there are plinths (17) which are fixed to the tongue or fixed to the stringer and which end at a short distance from the stringer or the tongue (1).
11. A surfboard according to one of claims 1 to 10, characterized in that there are springs (18) between the tongue (1) and the stringer (4), which springs are preferably adjustable in relation to their spring characteristic.
12. A surfboard according to claim 11, characterized in that one of the springs (18) is a helical spring which at the bottom is supported on the tongue (1) and at the top is fastened to the stringer (4) preferably by means of a screw, with which the distance between spring (18) and stringer (4) can be varied.
13. A surfboard according to claim 2, characterized in that the highly elastic material (6) is foam, at least the outer pores of which are closed.
14. A surfboard according to one of claims 1 to 13, characterized in that two supported stringers (4) are provided next to one another in the transverse direction of the surfboard.
15. A surfboard according to claim 14, characterized in that at least one cross-strut (19) is located between the two stringers (4).
16. A surfboard according to one of claims 1 to 15, characterized in that, when an old aft has been removed from a surfboard of conventional design, a new aft is attached to the remaining part of the latter (Figures 6 and 7).
17. A surfboard according to claim 16, characterized in that the new aft constitutes a construction kit, the parts of which are assembled completely or partially before attachment to the remaining part of the board.
18. A surfboard according to claim 16, characterized in that the tongue (1) of the new aft projects forwards relative to the remaining part of the new aft, that this projecting part is fastened to the remaining part of the old surfboard, preferably by means of dowels (22), and that a bracket (23), to which a stringer (4) is fastened, is attached to the remaining part of the old surfboard at the rear and at the top.
19. A surfboard according to one of claims 16 to 18, characterized in that the rear surface regions of the remaining part of the old surfboard are covered with a layer (24) of high-strength plastic.
20. A surfboard according to claim 15, characterized in that a foot loop (8) is fastened to the cross-strut (19).
21. A surfboard according to claim 15, characterized in that the connections of the supports with the stringers (4) are so loose that bending and twisting of the tongue (1) are possible within specific limits.
EP87902046A 1986-03-21 1987-03-19 Surf-board Expired - Lifetime EP0299958B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87902046T ATE72549T1 (en) 1986-03-21 1987-03-19 SURFBOARD.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3610043 1986-03-21
DE3610043A DE3610043C1 (en) 1986-03-21 1986-03-21 Surf board
DE19863635802 DE3635802A1 (en) 1986-10-17 1986-10-17 Surfboard
DE3635802 1986-10-17

Publications (2)

Publication Number Publication Date
EP0299958A1 EP0299958A1 (en) 1989-01-25
EP0299958B1 true EP0299958B1 (en) 1992-02-12

Family

ID=25842317

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902046A Expired - Lifetime EP0299958B1 (en) 1986-03-21 1987-03-19 Surf-board

Country Status (7)

Country Link
US (1) US4995843A (en)
EP (1) EP0299958B1 (en)
JP (1) JPH01502085A (en)
AT (1) ATE72549T1 (en)
AU (1) AU612318B2 (en)
DE (1) DE3776693D1 (en)
WO (1) WO1987005526A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633242A1 (en) * 1988-06-27 1989-12-29 Giffard Laurent Sailboard in which the support for the feet is mounted on shock absorbers
US6059621A (en) * 1999-01-12 2000-05-09 Vogel; Richard High performance surfboard
US7121909B1 (en) 2005-04-29 2006-10-17 Thomas Meyerhoffer System of interchangeable components for creating a customized waterboard
US7347754B1 (en) * 2007-02-03 2008-03-25 Bamba International (Canada) Ltd Flexible encapsulated spring stringer for bodyboard
US8123580B1 (en) 2009-07-15 2012-02-28 Thomas Erik Meyerhoffer Interface system for segmented surfboard

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902207A (en) * 1973-07-05 1975-09-02 Robert C Tinkler Surfboard
US3988794A (en) * 1975-06-02 1976-11-02 Tinkler Robert C Surfboard with resilient tail
DE3242913A1 (en) * 1982-11-20 1984-05-24 Jean 5100 Aachen Braun Deformable sports appliances

Also Published As

Publication number Publication date
DE3776693D1 (en) 1992-03-26
WO1987005526A1 (en) 1987-09-24
US4995843A (en) 1991-02-26
ATE72549T1 (en) 1992-02-15
AU7169087A (en) 1987-10-09
JPH01502085A (en) 1989-07-27
AU612318B2 (en) 1991-07-11
EP0299958A1 (en) 1989-01-25

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