EP0129103B1 - Water sport apparatus in the form of a wheel - Google Patents

Water sport apparatus in the form of a wheel Download PDF

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Publication number
EP0129103B1
EP0129103B1 EP84106024A EP84106024A EP0129103B1 EP 0129103 B1 EP0129103 B1 EP 0129103B1 EP 84106024 A EP84106024 A EP 84106024A EP 84106024 A EP84106024 A EP 84106024A EP 0129103 B1 EP0129103 B1 EP 0129103B1
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EP
European Patent Office
Prior art keywords
wheel
fact
water sport
paddles
sport device
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
Application number
EP84106024A
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German (de)
French (fr)
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EP0129103A1 (en
Inventor
Aurel-Gheorghe Dipl.-Ing. Ivanciu
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Ivanciu Aurel-Gheorghe Dipl-Ing
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Individual
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Priority to AT84106024T priority Critical patent/ATE32322T1/en
Publication of EP0129103A1 publication Critical patent/EP0129103A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/38—Propulsive elements directly acting on water characterised solely by flotation properties, e.g. drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/047—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with spherical hull or hull in the shape of a vertical ring

Definitions

  • the invention relates to wheel-shaped water sports equipment according to the preamble of claims 1, 4 and 5.
  • Wheel-shaped structures have become known as water sports devices, which have standing height inside and are provided with blades on the outside. By walking inside the wheel, the wheel turns and moves forward in the water by means of shovels.
  • the known water pedal bikes (FR-A-1 258 155) are mostly formed from inflatable parts, so that such a bike has little stability. If the water bike does not have a minimum width, the erecting force is relatively small, so that it is difficult to keep the water bike in a vertical position at all times. Once it falls over, it is difficult to straighten it up. In addition, it is disadvantageous in the known device that it is difficult to handle on a solid surface.
  • the invention is therefore based on the object of improving a water sports device of the type mentioned in such a way that increased safety in operation is ensured and that it is easier to handle in the water and on land.
  • struts are attached, with which a floating or stabilizing body arranged outside the wheel can be connected.
  • a stabilizing body can be provided on both sides or only on one side and ensures that the water pedal bike is normally always in an upright position, even if the person in the wheel makes an awkward movement.
  • the struts must be attached so that they do not disturb the person inside the wheel.
  • radial struts are provided which are rotatably connected to a support frame which in turn is connected to the floating or stabilizing body.
  • the rotatable coupling to the support frame is required because the stabilizing body must not naturally rotate when the wheel is set in motion.
  • Another alternative according to claim 5 is to attach to the outside of the wheel a plurality of circumferentially spaced horizontal struts which are connected to an auxiliary wheel which accordingly rotates with the actual water pedal wheel when it is set in rotation.
  • a second water pedal wheel can also be provided, the two water pedal wheels preferably being connected to one another via a connecting rod.
  • the second pedal bike also acts like a floating and stabilizing body and also allows two people to move forward on the water at the same time.
  • the connecting rod can be connected to the respective radial struts on the assigned water pedal wheel.
  • a seat or a container can also be attached to the connecting rod for transporting a person or things. In the former case, such a tandem wheel can also be used for rescue purposes, for example.
  • the floating and stabilizing bodies are preferably elongated floating bodies, which are rotatably coupled to the radial struts on the wheel via corresponding support struts.
  • the connection of the support frame with the floating bodies and the radial struts and the connection of the radial struts is preferably designed to be detachable, so that the assembly of the finished water bike also only in place, i. H. can take place on a lake, a river or the like.
  • a steering surface can also be attached to steer the water bike in a certain direction.
  • Radial struts attached to both sides of a wheel can also be used to hold a seat or the like.
  • the seat which can be designed in the form of a U-shaped rod, must in turn be pivotally mounted in the supports.
  • a sail can also be coupled to the connecting rod.
  • mount the blades in an adjustable manner, preferably pivotably in such a way that they can be folded in one direction against the circumference of the wheel, so that the blades do not oppose one another in an advancing direction.
  • they are moved into their extended position by gravity and held against a stop by water pressure, which prevents them from folding in the opposite direction.
  • the wheel of the water sports device according to the invention is preferably made of plastic material.
  • the wheel is preferably rectangular in cross-section, the side walls and inner and outer walls being formed from flat plastic material, while the interior is hollow.
  • the wall sections are preferably attached to one another by welding.
  • the wall sections consist, for. B. made of polyethylene. Rings are preferably welded to the disks on the outer circumference, which protrude radially somewhat beyond the blades. This allows the wheel to roll easily on a surface without the blades to be damaged. Rings are also preferably arranged on the inside of the disks, which serve primarily to protect the person in the water bike.
  • the panes protrude slightly inward radially inward from the base surface or inner surface, so that it is expedient if openings are made in the panes at ground level through which water which may enter can run off.
  • the blades also expediently have openings to prevent air cushions from being trapped in the water when the blades enter the water, which impair the propulsion. Further embodiments of the invention are the subject of dependent claims.
  • Fig. 1 shows a cylindrical wheel 10, the inside 11 has a diameter which corresponds to a normal standing height, that is about 1.9 m.
  • a row of radial blades 12 is arranged on the outside of the wheel and has through openings 12 a at the ends.
  • Rings 13a, 14a are attached to the outer edge of the disks 13, 14, also by welding. Rings 13b, 14b are also fastened to the inside of the disks 13, 14 by welding.
  • the rings have a circular cross-section.
  • the outer rings 13a, 14a protrude radially slightly beyond the blades 12, and therefore serve to protect the blades when rolling off and for better rolling on a solid surface.
  • the blades 12 are also made of plastic and are welded to the rings 13a, 14a, the disks 13, 14 and the outer ring 16.
  • the rings 13b, 14b serve above all to protect the person in the water bike.
  • the disks 13, 14 protrude slightly above the inner ring 11, so openings 18 are provided in the area through which water can escape.
  • Fig. 1 it can also be seen that on each side with the disks 13, 14 three radial support struts 18a are arranged at the same circumferential distance. They are inserted into holes in disks 19, 20 and can be fastened there using screws 19a, 20a. The outer end of the struts 18a is inserted into corresponding clamping components 19b, 20b, where they can also be fixed with the aid of screws which are not designated.
  • the disks 19, 20 are provided with an axial projection 19c, 20c in which a bearing component 19e, 20e is rotatably mounted. Two support struts 21 are fixedly connected to the bearing component 19e, 20e, similar to the connection described above.
  • the angular outward and to the side struts 21 extend through an elongated, circular in cross-section floating body 22 and 23.
  • the length of the support struts 21 in the floating body 22, 23 is variable, so that the height of the floating body 22, 23 with respect to Axis of rotation of the wheel 10 is changeable.
  • Brackets 24 are attached to the floating bodies 22, 23 at the front and rear, can be pushed through the connecting rods 25, 26 and can be fixed with the aid of screws. As a result, the distance between the floats 22, 23 can be set to a limited extent.
  • a control rod 27 is pivotably mounted with a handle 28.
  • the other end of the rod 27 is rotatably mounted in a bearing component 29 fastened to the floating body 22.
  • a rudder blade 30 is attached to the rod 27. By turning the rod 27, the position of the rudder blade 30 is changed so that a desired direction can be selected when the water pedal wheel is actuated.
  • a U-shaped bracket 31 is bent at 32 at the leg ends.
  • the bent sections 32 are rotatably supported in the bearing disks 19 and 20, respectively.
  • the bracket 31 is provided with a covering 33 in the web.
  • the bracket 31 thus serves as a seat or for gripping while operating the water bike. 1 shows that the rudder device described can be attached to each side.
  • FIGS. 1 to 3 shows the pivotability of the seat 31.
  • 4 shows the operation of the water pedal wheel according to FIGS. 1 to 3. It can be seen that the floating bodies 22, 23 are partially immersed.
  • two water wheels are coupled to one another. They are designated 10 and 10a. Since the structure of the water wheels 10, 10a is the same and the structure of the water wheel 1 is similar, will not be discussed in detail. It is essential that a rod 32 is connected to the bearing disks 20 which face each other and which couples the two water wheels 10, 10a to one another. There can be one person in each water wheel 10, 10a, so it is a tandem device. A chair, a seat, a container or the like can also be attached to the connecting rod 32, which can have different lengths. A sail can also be attached to the rod 32, and a mast can be located on a board to support the mast base, for example similar to the board of a standing glider.
  • the structure of the tandem water tricycle according to FIG. 6 is the same as the structure of the water tricycle according to FIGS.
  • the blades 40 are welded in the lower region to a rod 41 which is pivotally mounted in bearing blocks 43, 44 at both ends of the blade 40.
  • the blades 40 can only move up to an angle of 90 ° with respect to the outer ring 16. A further movement is prevented by bumping the blade against the outside of the outer ring 16.
  • the blade can pivot in the opposite direction, as indicated by dashed lines and in solid lines in the right-hand illustration of FIG be returned to the radial position when immersed in water.
  • the tandem water pedal bike shown can therefore only be moved in one direction, namely counterclockwise, by the pivoting blades in a standing position. If a sail is now set, flow resistance through the blades 40 is prevented when the tandem device is moved forward in the opposite direction.
  • the structure of the individual wheels 10b, 10c is similar to that of the wheels from the preceding figures. From the sectional view B-B it can be seen, however, that the inner ring 15a and the outer ring 16a protrude slightly beyond the annular disks 13a, 14a. The projecting ends are 13a and 14a, respectively. The protruding ends are in turn welded with rings 45 or 13'a and 14'a for protection purposes. Buckets, the outer circumference of which is circular, are designated by 12a.
  • the blades 12a are also pivotably mounted, namely on the same principle as the blades 40 according to FIG. 6.
  • the blades 12a are also actuated by gravity, as can be seen from the right-hand illustration of FIG. 7.
  • care must be taken to ensure that the blades do not run completely parallel to the associated ring disk when they are folded back. This can be achieved with the help of a suitable stop.
  • propulsion takes place only when the wheels 10b, 10c rotate counterclockwise.
  • the tandem device shown in FIG. 7 can therefore also be moved forward with the aid of a sail or a motor if it is propelled in the opposite direction.
  • a drive motor can be attached to the connecting rod 32, for example, while the propeller propeller is immersed in the water between the wheels 10a, 10b.
  • a water pedal wheel 50 is shown, the structure of which corresponds to that according to FIG. 1, for example.
  • Bars 53 are connected to them through the disks 51, 52, namely a total of six.
  • the other rods 53 which thus project horizontally from the wheel 50, are connected to an auxiliary wheel 54.
  • the auxiliary wheel has corresponding brackets 55 through which the rods 53 can be inserted. With the help of screws, not shown, the rods 53 can be fixed in the brackets 55.
  • the auxiliary wheel 54 is a kind of boom, which stabilizes the wheel 50, on both sides.
  • the auxiliary wheel 54 is preferably also molded from plastic.
  • the rods are made of corrosion-resistant material.
  • the rods 53 are also releasably connected to the wheel 50 in order to be able to use the wheel 50 elsewhere.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

1. Water sport device with at least one cylindrical wheel, which is buoyant in upright position when the cylinder axis is approximately horizontal, whose inner diameter is of standing height, whose inner side (11) is designed as a cylindrical standing or tread and running surface for one person and whose outer circumference is provided with several paddles (12), whereby radial struts (18a) are provided on at least one side of the wheel (10) on which a supporting frame (21) for at least one additional float and stabilizer (22, 23) is mounted outside the wheel, and whereby a control (22) is provided on the stabilizer, characterized by the fact that the wheel cross-section is rectangular with two spaced ring-shaped vertical plates (13, 14) and concentric, radially spaced ring walls (15, 16) made of rigid plastic material, which are welded together, and by the fact that the disks project slightly beyond the paddles radially and are provided with rings (13a, 14a) on the outer circumference.

Description

Die Erfindung bezieht sich auf radförmige Wassersportgeräte gemäß dem Oberbegriff der Ansprüche 1, 4 und 5.The invention relates to wheel-shaped water sports equipment according to the preamble of claims 1, 4 and 5.

Es sind als Wassersportgeräte radförmige Gebilde bekannt geworden, die im Inneren Stehhöhe haben und an der Außenseite mit Schaufeln versehen sind. Durch Gehen im Inneren des Rades dreht sich das Rad und bewegt sich infolge des Vortriebs mittels Schaufeln im Wasser vorwärts. Die bekannten Wassertreträder (FR-A-1 258 155) sind zumeist aus aufblasbaren Teilen geformt, so daß ein derartiges Rad nur eine geringe Stabilität hat. Wenn das Wassertretrad nicht eine Mindestbreite erhält, ist die Aufrichtkraft verhältnismäßig klein, so daß es schwierig ist, das Wassertretrad stets in vertikaler Lage zu halten. Ist es einmal umgefallen, ist es schwierig es wieder aufzurichten. Außerdem ist es beim bekannten Gerät nachteilig, daß es schwierig auf festem Untergrund zu handhaben ist.Wheel-shaped structures have become known as water sports devices, which have standing height inside and are provided with blades on the outside. By walking inside the wheel, the wheel turns and moves forward in the water by means of shovels. The known water pedal bikes (FR-A-1 258 155) are mostly formed from inflatable parts, so that such a bike has little stability. If the water bike does not have a minimum width, the erecting force is relatively small, so that it is difficult to keep the water bike in a vertical position at all times. Once it falls over, it is difficult to straighten it up. In addition, it is disadvantageous in the known device that it is difficult to handle on a solid surface.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Wassersportgerät der eingangs genannten Art dahingehend zu verbessern daß eine erhöhte Sicherheit im Betrieb gewährleistet ist und daß es leichter im Wasser und zu Lande zu handhaben ist.The invention is therefore based on the object of improving a water sports device of the type mentioned in such a way that increased safety in operation is ensured and that it is easier to handle in the water and on land.

Gemäß einer ersten Alternative sind zur Lösung dieser Aufgabe die Merkmale des Anspruchs 1 vorgesehen.According to a first alternative, the features of claim 1 are provided to achieve this object.

Bei dem erfindungsgemäßen Wassersportgerät sind Streben angebracht, mit denen ein außerhalb des Rades angeordneter Schwimm-oder Stabilisierungskörper verbunden werden kann. Ein Stabilisierungskörper kann auf beiden Seiten oder auch nur auf einer Seite vorgesehen werden und gewährleistet, daß das Wassertretrad normalerweise stets in aufrechter Lage ist, auch wenn die Person in dem Rad eine ungeschickte Bewegung macht.In the water sports device according to the invention, struts are attached, with which a floating or stabilizing body arranged outside the wheel can be connected. A stabilizing body can be provided on both sides or only on one side and ensures that the water pedal bike is normally always in an upright position, even if the person in the wheel makes an awkward movement.

Die Streben sind so anzubringen, daß sie die Person im Inneren des Rades nicht stören. Eine Ausführungsform sieht vor, daß radiale Streben vorgesehen sind, die drehbar mit einem Stützgestell verbunden sind, das seinerseits mit dem Schwimm- oder Stabilisierungskörper verbunden ist. Die drehbare Ankopplung am Stützgestell ist erforderlich, da der Stabilisierungskörper sich naturgemäß nicht mitdrehen darf, wenn das Rad in Bewegung gesetzt wird.The struts must be attached so that they do not disturb the person inside the wheel. One embodiment provides that radial struts are provided which are rotatably connected to a support frame which in turn is connected to the floating or stabilizing body. The rotatable coupling to the support frame is required because the stabilizing body must not naturally rotate when the wheel is set in motion.

Eine andere Alternative gemäß Anspruch 5 besteht darin, an der einen Außenseite des Rades mehrere in Umfangsrichtung beabstandete horizontale Streben anzubringen, die mit einem Hilfsrad verbunden sind, das sich demgemäß mit dem eigentlichen Wassertretrad mitdreht, wenn dieses in Drehung versetzt wird.Another alternative according to claim 5 is to attach to the outside of the wheel a plurality of circumferentially spaced horizontal struts which are connected to an auxiliary wheel which accordingly rotates with the actual water pedal wheel when it is set in rotation.

Schließlich kann nach einer weiteren Alternative gemäß Anspruch 4 auch ein zweites Wassertretrad vorgesehen werden, wobei beide Wassertreträder vorzugsweise über eine Verbindungsstange miteinander verbunden sind. Das zweite Tretrad wirkt ebenfalls wie ein Schwimm- und Stabilisierungskörper und ermöglicht im übrigen, daß zwei Personen gleichzeitig sich auf dem Wasser vorwärtsbewegen können. Die Verbindungsstange kann mit den jeweils zugekehrten radialen Streben am zugeordneten Wassertretrad verbunden sein. An der Verbindungsstange können auch ein Sitz oder ein Behälter angebracht werden zum Transport einer Person bzw. von Sachen. Im ersteren Fall kann ein solches Tandemrad auch zu Rettungszwecken eingesetzt werden, um z. B. Personen, die im Eis eingebrochen oder in moorigem Gelände zu versinken drohen, zu retten.Finally, according to a further alternative according to claim 4, a second water pedal wheel can also be provided, the two water pedal wheels preferably being connected to one another via a connecting rod. The second pedal bike also acts like a floating and stabilizing body and also allows two people to move forward on the water at the same time. The connecting rod can be connected to the respective radial struts on the assigned water pedal wheel. A seat or a container can also be attached to the connecting rod for transporting a person or things. In the former case, such a tandem wheel can also be used for rescue purposes, for example. B. Rescue people who have broken into the ice or are about to sink into boggy terrain.

Wird nur ein Wassertretrad vorgesehen, sind die Schwimm- und Stabilisierungskörper vorzugsweise längliche Schwimmkörper, die über entsprechende Stützstreben mit den radialen Streben am Rad drehbar gekoppelt sind. Die Verbindung des Stützgestells mit den Schwimmkörpern und den radialen Streben sowie die Verbindung der radialen Streben ist vorzugsweise lösbar gestaltet, so daß die Montage des fertigen Wassertretrads auch erst an Ort und Stelle, d. h. an einem See, einem Fluß oder dergleichen erfolgen kann.If only one water pedal wheel is provided, the floating and stabilizing bodies are preferably elongated floating bodies, which are rotatably coupled to the radial struts on the wheel via corresponding support struts. The connection of the support frame with the floating bodies and the radial struts and the connection of the radial struts is preferably designed to be detachable, so that the assembly of the finished water bike also only in place, i. H. can take place on a lake, a river or the like.

Zusätzlich zu den Schwimmkörpern kann auch eine Lenkfläche angebracht werden, um das Wassertretrad in eine bestimmte Richtung zu lenken.In addition to the floats, a steering surface can also be attached to steer the water bike in a certain direction.

Auf beiden Seiten eines Rades angebrachte radiale Streben können auch zur Aufnahme eines Sitzes oder dergleichen herangezogen werden. Der Sitz, der in Form einer U-förmig gebogenen Stange ausgebildet sein kann, muß wiederum schwenkbar in den Stützen gelagert sein.Radial struts attached to both sides of a wheel can also be used to hold a seat or the like. The seat, which can be designed in the form of a U-shaped rod, must in turn be pivotally mounted in the supports.

Bei einem Tandemwasserrad kann mit der Verbindungsstange auch ein Segel gekoppelt werden. In diesem Fall ist es zweckmäßig, die Schaufeln verstellbar anzubringen, vorzugsweise schwenkbar derart, daß sie in eine Richtung gegen den Umfang des Rades geklappt werden können, so daß bei einer Vortriebsrichtung die Schaufeln sich nicht hemmend entgegenstellen. Durch Schwerkraft werden sie hingegen in ihre ausgefahrene Stellung bewegt und durch Wasserdruck gegen einen Anschlag gehalten, der verhindert, daß sie in die entgegengesetzte Richtung klappen.In the case of a tandem water wheel, a sail can also be coupled to the connecting rod. In this case, it is expedient to mount the blades in an adjustable manner, preferably pivotably in such a way that they can be folded in one direction against the circumference of the wheel, so that the blades do not oppose one another in an advancing direction. On the other hand, they are moved into their extended position by gravity and held against a stop by water pressure, which prevents them from folding in the opposite direction.

Das Rad des erfindungsgemäßen Wassersportgeräts wird vorzugsweise aus Kunststoffmaterial gefertigt. Das Rad hat vorzugsweise rechteckigen Querschnitt, wobei die Seitenwände und innere und äußere Wand aus flachem Kunststoffmaterial gebildet sind, während der Innenraum hohl ist. Die Wandabschnitte werden vorzugsweise durch Schweißung miteinander befestigt. Die Wandabschnitte bestehen z. B. aus Polyethylen. Am Außenumfang sind vorzugsweise auf die Scheiben jeweils Ringe angeschweißt, die radial etwas über die Schaufeln vorstehen. Dadurch läßt sich das Rad ohne weiteres auf einem Untergrund rollen, ohne daß die Schaufeln beschädigt werden. Vorzugsweise sind auch an der Innenseite der Scheiben Ringe angeordnet, welche vor allem zum Schutz der Person im Wassertretrad dienen. Die Scheiben stehen über die Bodenfläche bzw. Innenfläche radial nach innen etwas vor, so daß es zweckmäßig ist, wenn in den Scheiben in Bodenhöhe Öffnungen angebracht sind, über die eventuell eintretendes Wasser ablaufen kann. Die Schaufeln haben ebenfalls zweckmäßigerweise Öffnungen, um zu verhindern, daß beim Eintritt der Schaufeln in das Wasser Luftpolster eingeschlossen werden, die den Vortrieb beeinträchtigen. Weitere Ausgestaltungen der Erfindung sind Gegenstand von Unteransprüchen.The wheel of the water sports device according to the invention is preferably made of plastic material. The wheel is preferably rectangular in cross-section, the side walls and inner and outer walls being formed from flat plastic material, while the interior is hollow. The wall sections are preferably attached to one another by welding. The wall sections consist, for. B. made of polyethylene. Rings are preferably welded to the disks on the outer circumference, which protrude radially somewhat beyond the blades. This allows the wheel to roll easily on a surface without the blades to be damaged. Rings are also preferably arranged on the inside of the disks, which serve primarily to protect the person in the water bike. The panes protrude slightly inward radially inward from the base surface or inner surface, so that it is expedient if openings are made in the panes at ground level through which water which may enter can run off. The blades also expediently have openings to prevent air cushions from being trapped in the water when the blades enter the water, which impair the propulsion. Further embodiments of the invention are the subject of dependent claims.

Ausführungsbeispiele der Erfindung werden anhand von Zeichnungen näher erläutert.

  • Fig. 1 zeigt perspektivisch schematisch ein erfindungsgemäßes Wassersportrad.
  • Fig. 2 zeigt zwei Seitenansichten des Wassersportrads nach Fig. 1 teilweise im Schnitt.
  • Fig. 3 zeigt eine andere Seitenansicht des Wassersportrads nach Fig. 1.
  • Fig. 4 zeigt eine ähnliche Darstellung wie Fig. 2, jedoch mit dem Wassertretrad auf dem Wasser.
  • Fig. 5 zeigt ein Doppelwassertretrad nach der Erfindung.
  • Fig. 6 zeigt ein ähnliches Doppelwassertretrad entsprechend Fig. 5, jedoch in einer geringfügig abgeänderten Variation, und zwar in Zweiseitenansicht und einem Schnitt.
  • Fig. 7 zeigte eine ähnliche Darstellung wie Fig. 6, jedoch mit anderen Schaufeln sowie wiederum in verschiedenen Seitenansichten und im Schnitt.
  • Fig. 8 zeigt perspektivisch eine weitere Ausführungsform eines Doppelwassertretrades nach der Erfindung.
Embodiments of the invention are explained in more detail with reference to drawings.
  • 1 shows a perspective view of a water sports bike according to the invention.
  • Fig. 2 shows two side views of the water sports bike according to Fig. 1, partly in section.
  • FIG. 3 shows another side view of the water sports bike according to FIG. 1.
  • Fig. 4 shows a similar representation as Fig. 2, but with the water pedal on the water.
  • Fig. 5 shows a double water bike according to the invention.
  • Fig. 6 shows a similar double water bike according to Fig. 5, but in a slightly modified variation, namely in a two-sided view and a section.
  • Fig. 7 shows a similar representation as Fig. 6, but with different blades and again in different side views and in section.
  • 8 shows a perspective view of a further embodiment of a double water treadmill according to the invention.

Fig. 1 zeigt ein zylindrisches Rad 10, dessen Innenseite 11 einen Durchmesser hat, der einer normalen Stehhöhe entspricht, also etwa 1,9 m beträgt. An der Außenseite des Rades ist eine Reihe von radialen Schaufeln 12 angeordnet, die an den Enden Durchtrittsöffnungen 12a aufweisen.Fig. 1 shows a cylindrical wheel 10, the inside 11 has a diameter which corresponds to a normal standing height, that is about 1.9 m. A row of radial blades 12 is arranged on the outside of the wheel and has through openings 12 a at the ends.

Sein Querschnitt ist rechteckförmig. Es besteht aus zwei parallelen ringförmigen vertikalen Scheiben 13, 14, einem Innenring 15 und einem Außenring 16. Die Teile 13 bis 16 sind miteinander verschweißt. Der sich dadurch ergebende Innenraum 17 ist hohl.Its cross section is rectangular. It consists of two parallel annular vertical disks 13, 14, an inner ring 15 and an outer ring 16. The parts 13 to 16 are welded together. The resulting interior 17 is hollow.

Am Außenrand der Scheiben 13, 14 sind Ringe 13a, 14a angebracht, ebenfalls durch Schweißung. An der Innenseite der Scheiben 13, 14 sind Ringe 13b, 14b ebenfalls durch Schweißung befestigt.Rings 13a, 14a are attached to the outer edge of the disks 13, 14, also by welding. Rings 13b, 14b are also fastened to the inside of the disks 13, 14 by welding.

Die Ringe haben kreisförmigen Querschnitt. Die Außenringe 13a, 14a stehen radial etwas über die Schaufeln 12 vor, dienen daher zum Schutz der Schaufeln beim Abrollen und zum besseren Rollen auf einem festen Untergrund. Die Schaufeln 12 bestehen ebenfalls aus Kunststoff und werden mit den Ringen 13a, 14a, den Scheiben 13,14 und dem Außenring 16 verschweißt. Die Ringe 13b, 14b dienen vor allen Dingen dem Schutz der Person im Wassertretrad.The rings have a circular cross-section. The outer rings 13a, 14a protrude radially slightly beyond the blades 12, and therefore serve to protect the blades when rolling off and for better rolling on a solid surface. The blades 12 are also made of plastic and are welded to the rings 13a, 14a, the disks 13, 14 and the outer ring 16. The rings 13b, 14b serve above all to protect the person in the water bike.

Die Scheiben 13, 14 stehen innen etwas über den Innenring 11 vor, daher sind in dem Bereich Öffnungen 18 vorgesehen, über die Wasser austreten kann.The disks 13, 14 protrude slightly above the inner ring 11, so openings 18 are provided in the area through which water can escape.

Aus Fig. 1 ist ferner zu erkennen, daß an jeder Seite mit den Scheiben 13, 14 drei radiale Stützstreben 18a in gleichem Umfangsabstand angeordnet sind. Sie werden in Löchern von Scheiben 19, 20 gesteckt und können dort mit Hilfe von Schrauben 19a, 20a befestigt werden. Das äußere Ende der Streben 18a wird in entsprechende Klemmbauteile 19b, 20b gesteckt, wo sie ebenfalls mit Hilfe von nicht bezeichneten Schrauben festgelegt werden können. Die Scheiben 19, 20 sind mit einem axialen Vorsprung 19c, 20c versehen, in dem drehbar ein Lagerbauteil 19e, 20e gelagert ist. Mit dem Lagerbauteil 19e, 20e sind zwei Stützstreben 21 fest verbunden, ähnlich der oben beschriebenen Verbindung. Die winkelförmig nach außen und zur Seite verlaufenden Streben 21 erstrecken sich durch einen länglichen, im Querschnitt kreisförmigen Schwimmkörper 22 bzw. 23. Die im Schwimmkörper 22, 23 befindliche Länge der Stützstreben 21 ist veränderbar, so daß die Höhe der Schwimmkörper 22, 23 bezüglich der Drehachse des Rades 10 veränderbar ist. Auf den Schwimmkörpern 22, 23 sind vorne und hinten Konsolen 24 angebracht, durch die Verbindungsstangen 25, 26 hindurchgesteckt und mit Hilfe von Schrauben fixiert werden können. Dadurch kann der Abstand zwischen den Schwimmkörpern 22, 23 begrenzt eingestellt werden.From Fig. 1 it can also be seen that on each side with the disks 13, 14 three radial support struts 18a are arranged at the same circumferential distance. They are inserted into holes in disks 19, 20 and can be fastened there using screws 19a, 20a. The outer end of the struts 18a is inserted into corresponding clamping components 19b, 20b, where they can also be fixed with the aid of screws which are not designated. The disks 19, 20 are provided with an axial projection 19c, 20c in which a bearing component 19e, 20e is rotatably mounted. Two support struts 21 are fixedly connected to the bearing component 19e, 20e, similar to the connection described above. The angular outward and to the side struts 21 extend through an elongated, circular in cross-section floating body 22 and 23. The length of the support struts 21 in the floating body 22, 23 is variable, so that the height of the floating body 22, 23 with respect to Axis of rotation of the wheel 10 is changeable. Brackets 24 are attached to the floating bodies 22, 23 at the front and rear, can be pushed through the connecting rods 25, 26 and can be fixed with the aid of screws. As a result, the distance between the floats 22, 23 can be set to a limited extent.

Mit Hilfe eines am Lagerbauteil 19e befestigten Lagerbauteils 26 ist eine Steuerstange 27 mit einem Handgriff 28 verschwenkbar gelagert. Das andere Ende der Stange 27 ist in einem am Schwimmkörper 22 befestigten Lagerbauteil 29 drehbar gelagert. An der Stange 27 ist ein Ruderblatt 30 angebracht. Durch Drehung der Stange 27 wird die Stellung des Ruderblatts 30 verändert, so daß bei Betätigung des Wassertretrades eine gewünschte Richtung vorgewählt werden kann.With the help of a bearing component 26 fastened to the bearing component 19e, a control rod 27 is pivotably mounted with a handle 28. The other end of the rod 27 is rotatably mounted in a bearing component 29 fastened to the floating body 22. A rudder blade 30 is attached to the rod 27. By turning the rod 27, the position of the rudder blade 30 is changed so that a desired direction can be selected when the water pedal wheel is actuated.

Ein U-förmiger Bügel 31 ist an den Schenkelenden bei 32 abgebogen. Die abgebogenen Abschnitte 32 werden in den Lagerscheiben 19 bzw. 20 drehbar gelagert. Der Bügel 31 ist im Steg mit einem Belag 33 versehen. Der Bügel 31 dient mithin als Sitz oder zum Ergreifen während der Betätigung des Wassertretrades. Aus Fig. 1 geht im übrigen hervor, daß auf jeder Seite die beschriebene Rudereinrichtung angebracht sein kann.A U-shaped bracket 31 is bent at 32 at the leg ends. The bent sections 32 are rotatably supported in the bearing disks 19 and 20, respectively. The bracket 31 is provided with a covering 33 in the web. The bracket 31 thus serves as a seat or for gripping while operating the water bike. 1 shows that the rudder device described can be attached to each side.

Aus Fig. 3 geht die Verschwenkbarkeit des Sitzes 31 hervor. Aus Fig. 4 geht der Betrieb des Wassertretrades nach den Figuren 1 bis 3 hervor. Man erkennt, daß die Schwimmkörper 22, 23 teilweise eingetaucht sind.3 shows the pivotability of the seat 31. 4 shows the operation of the water pedal wheel according to FIGS. 1 to 3. It can be seen that the floating bodies 22, 23 are partially immersed.

Bei der Ausführungsform nach Fig. 5 sind zwei Wasserräder, wie sie in Fig 1 dargestellt sind, miteinander gekoppelt. Sie sind mit 10 bzw. 10a bezeichnet. Da der Aufbau der Wasserräder 10, 10a gleich ist und dem Aufbau des Wasserrades nach Fig. 1 gleicht, wird darauf im einzelnen nicht näher eingegangen. Wesentlich ist, daß mit den Lagerscheiben 20, die einander zugekehrt sind, eine Stange 32 verbunden ist, die die beiden Wasserräder 10, 10a miteinander koppelt. In jedem Wasserrad 10, 10a kann sich eine Person befinden, es handelt sich mithin um ein Tandemgerät. An der Verbindungsstange 32, die unterschiedliche Länge haben kann, kann ebenfalls ein Stuhl, ein Sitz, ein Behälter oder dergleichen angehängt werden. Ebenfalls kann an der Stange 32 ein Segel befestigt werden, wobei ein Mast sich auf einem Brett befinden kann zur Abstützung des Mastfußes, beispielsweise ähnlich dem Brett eines Stehseglers.In the embodiment according to FIG. 5, two water wheels, as shown in FIG. 1, are coupled to one another. They are designated 10 and 10a. Since the structure of the water wheels 10, 10a is the same and the structure of the water wheel 1 is similar, will not be discussed in detail. It is essential that a rod 32 is connected to the bearing disks 20 which face each other and which couples the two water wheels 10, 10a to one another. There can be one person in each water wheel 10, 10a, so it is a tandem device. A chair, a seat, a container or the like can also be attached to the connecting rod 32, which can have different lengths. A sail can also be attached to the rod 32, and a mast can be located on a board to support the mast base, for example similar to the board of a standing glider.

Der Aufbau des Tandemwassertretrades nach Fig. 6 gleicht dem Aufbau des Wassertretrades nach den Figuren 1 bis 3 mit Ausnahme der Schaufeln, die mit 40 bezeichnet sind. Die Schaufeln 40 sind im unteren Bereich mit einer Stange 41 verschweißt, die an beiden Enden der Schaufel 40 in Lagerklötzen 43,44 schwenkbar gelagert ist. Wie aus der Schnittansicht C-C nach Fig. 6 hervorgeht, können sich die Schaufeln 40 nur bis zu einem Winkel von 90° bezüglich des Außenringes 16 bewegen. Eine weitere Bewegung wird durch Anstoßen der Schaufel gegen die Außenseite des Außenringes 16 verhindert. In die entgegengesetzte Richtung hingegen kann die Schaufel verschwenken, wie gestrichelt angedeutet ist und in ausgezogenen Linien in der rechten Darstellung von Fig. 6. Man erkennt, daß die Schaufeln bei einer Drehung des Rades entgegengesetzt dem Uhrzeigersinn nach Überschreiten des Scheitelpunktes nach innen klappen und erst beim Eintauchen in das Wasser wieder in die radiale Position verstellt werden. Das dargestellte Tandemwassertretrad kann daher nur in einer Richtung, und zwar entgegengesetzt dem Uhrzeigersinn, durch die schwenkbaren Schaufeln in stehender Position vorwärtsbewegt werden. Wird nun ein Segel gesetzt, wird ein Strömungswiderstand durch die Schaufeln 40 verhindert, wenn das Tandemgerät in die entgegengesetzte Richtung vorwärtsbewegt wird. Bei dem Tandemwassertretrad nach Fig. 7 ist der Aufbau der einzelnen Räder 10b, 10c ähnlich dem der Räder aus den voranstehenden Figuren. Aus der Schnittansicht B-B ist jedoch zu ersehen, daß Innenring 15a und Außenring 16a zur Seite etwas über die Ringscheiben 13a, 14a überstehen. Die überstehenden Enden sind bzw. 13a, und 14a überstehen. Die überstehenden Enden sind wiederum mit Ringen 45 bzw. 13'a und 14'a zu Schutzzwecken verschweißt. Schaufeln, deren Außenumfang kreisförmig ist, sind mit 12a bezeichnet. Sie sind ebenfalls verschwenkbar gelagert, und zwar nach dem gleichen Prinzip wie die Schaufeln 40 nach Fig. 6. Auch die Schaufeln 12a werden, wie aus der rechten Darstellung von Fig. 7 hervorgeht, mittels Schwerkraft betätigt. Um sicherzustellen, daß sich die Schaufeln 12a beim Eintauchen in das Wasser tatsächlich um 90° verschwenken, muß Sorge dafür getragen werden, daß die Schaufeln beim Zurückklappen nicht vollkommen parallel zur zugeordneten Ringscheibe verlaufen. Dies kann mit Hilfe eines geeigneten Anschlages erreicht werden. Auch bei der Ausführungsform nach Fig. 7 erfolgt mithin ein Vortrieb nur bei Drehung der Räder 10b, 10c entgegengesetzt dem Uhrzeigersinn. Auch das in Fig. 7 gezeigte Tandemgerät kann mithin mit Hilfe eines Segels oder auch eines Motors vorwärtsbewegt werden, wenn es in die entgegengesetzte Richtung vorgetrieben wird. Ein Antriebsmotor kann beispielsweise an der Verbindungsstange 32 angebracht sein, während der Vortriebspropeller zwischen den Rädern 10a, 10b in das Wasser eintaucht.The structure of the tandem water tricycle according to FIG. 6 is the same as the structure of the water tricycle according to FIGS. The blades 40 are welded in the lower region to a rod 41 which is pivotally mounted in bearing blocks 43, 44 at both ends of the blade 40. As can be seen from the sectional view C-C according to FIG. 6, the blades 40 can only move up to an angle of 90 ° with respect to the outer ring 16. A further movement is prevented by bumping the blade against the outside of the outer ring 16. In contrast, the blade can pivot in the opposite direction, as indicated by dashed lines and in solid lines in the right-hand illustration of FIG be returned to the radial position when immersed in water. The tandem water pedal bike shown can therefore only be moved in one direction, namely counterclockwise, by the pivoting blades in a standing position. If a sail is now set, flow resistance through the blades 40 is prevented when the tandem device is moved forward in the opposite direction. 7, the structure of the individual wheels 10b, 10c is similar to that of the wheels from the preceding figures. From the sectional view B-B it can be seen, however, that the inner ring 15a and the outer ring 16a protrude slightly beyond the annular disks 13a, 14a. The projecting ends are 13a and 14a, respectively. The protruding ends are in turn welded with rings 45 or 13'a and 14'a for protection purposes. Buckets, the outer circumference of which is circular, are designated by 12a. They are also pivotably mounted, namely on the same principle as the blades 40 according to FIG. 6. The blades 12a are also actuated by gravity, as can be seen from the right-hand illustration of FIG. 7. In order to ensure that the blades 12a actually pivot by 90 ° when immersed in the water, care must be taken to ensure that the blades do not run completely parallel to the associated ring disk when they are folded back. This can be achieved with the help of a suitable stop. In the embodiment according to FIG. 7, therefore, propulsion takes place only when the wheels 10b, 10c rotate counterclockwise. The tandem device shown in FIG. 7 can therefore also be moved forward with the aid of a sail or a motor if it is propelled in the opposite direction. A drive motor can be attached to the connecting rod 32, for example, while the propeller propeller is immersed in the water between the wheels 10a, 10b.

Bei der Ausführungsform nach Fig. 8 ist ein Wassertretrad 50 gezeigt, dessen Aufbau dem nach Fig. 1 beispielsweise entspricht. Durch die Scheiben 51, 52 hindurchgehend sind Stangen 53 mit diesen verbunden, und zwar insgesamt sechs. Die anderen Stangen 53, die mithin horizontal vom Rad 50 abstehen, sind mit einem Hilfsrad 54 verbunden. Das Hilfsrad hat entsprechende Konsolen 55, durch die die Stangen 53 hindurchgesteckt werden können. Mit Hilfe von nicht gezeigten Schrauben lassen sich die Stangen 53 in den Konsolen 55 festlegen. Das Hilfsrad 54 ist eine Art Ausleger, welcher das Rad 50 stabilisiert, und zwar zu beiden Seiten. Das Hilfsrad 54 ist vorzugsweise ebenfalls aus Kunststoff geformt. Die Stangen bestehen aus korrosionsfestem Material. Die Stangen 53 sind im übrigen auch lösbar mit dem Rad 50 verbunden, um das Rad 50 anderweitig einsetzen zu können.In the embodiment according to FIG. 8, a water pedal wheel 50 is shown, the structure of which corresponds to that according to FIG. 1, for example. Bars 53 are connected to them through the disks 51, 52, namely a total of six. The other rods 53, which thus project horizontally from the wheel 50, are connected to an auxiliary wheel 54. The auxiliary wheel has corresponding brackets 55 through which the rods 53 can be inserted. With the help of screws, not shown, the rods 53 can be fixed in the brackets 55. The auxiliary wheel 54 is a kind of boom, which stabilizes the wheel 50, on both sides. The auxiliary wheel 54 is preferably also molded from plastic. The rods are made of corrosion-resistant material. The rods 53 are also releasably connected to the wheel 50 in order to be able to use the wheel 50 elsewhere.

Claims (14)

1. Water sport device with at least one cylindrical wheel, which is buoyant in upright position when the cylinder axis is approximately horizontal, whose inner diameter is of standing height, whose inner side (11) is designed as a cylindrical standing or tread and running surface for one person and whose outer circumference is provided with several paddles (12), whereby radial struts (18a) are provided on at least one side of the wheel (10) on which a supporting frame (21) for at least one additional float and stabilizer (22, 23) is mounted outside the wheel, and whereby a control (22) is provided on the stabilizer, characterized by the fact that the wheel cross-section is rectangular with two spaced ring-shaped vertical plates (13,14) and concentric, radially spaced ring walls (15, 16) made of rigid plastic material, which are welded together, and by the fact that the disks project slightly beyond the paddles radially and are provided with rings (13a, 14a) on the outer circumference.
2. Water sport device in accordance with Claim 1, characterized by the fact that longitudinal floats and stabilizers (22, 23) are arranged on both sides of the wheel (10) and are connected with each other by means of at least one connecting strut (25, 26).
3. Water sport device in accordance with Claim 2, characterized by the fact that a bearing assembly (29) for a control rod (27) is mounted on the outer circumference of at least one float (22, 23) which is supported at the bottom end by a control surface (30) and at the top end by the radial struts (18a) so that it can be rotated, and by the fact that it has a tiller (28).
4. Water sport device with at least one cylindrical wheel, which is buoyant in upright position when the cylinder axis is approximately horizontal, whose inner diameter is of standing height, whose inner side (11) is designed as a cylindrical standing or tread and running surface for one person and whose outer circumference is provided with several paddles (12), whereby radial struts (18a) are provided on at least one side of the wheel (10) on which a supporting frame (21) for at least one additional float and stabilizer is mounted outside the wheel, characterized by the fact that at least one second wheel of the same kind (10b, c) is provided parallel and at a distance from the first wheel in tandem arrangement to act as a float and stabilizer, whereby the cylinder axes coincide and the wheels are connected so that they can rotate independently by means of a connecting element (19, 20) coupled to the struts of the wheels.
5. Water sport device with at least one cylindrical wheel, which is buoyant in upright position when the cylinder axis is approximately horizontal, whose inner diameter is of standing height, whose inner side (11) is designed as a cylindrical standing or tread and running surface for one person and whose outer circumference is provided with several paddles (12), whereby struts are provided on at least one side of the wheel (50) connected to a float or stabilizer outside the wheel, characterized by the fact that the wheel cross-section is rectangular with two spaced ring-shaped vertical plates (13, 14) and concentric, radially spaced ring walls (15, 16) made of rigid plastic material, which are welded together, and by the fact that the struts (53) parallel to the cylinder axis and horizontal at intervals around the circumference are connected to the wheel on the one hand and, on the other hand, to an outrigger-type auxiliary wheel (54) at a distance acting as a float and stabilizer.
6. Water sport device in accordance with one of the Claims 1 to 5, characterized by the fact that rings (13b, 14b) are provided on both sides of the wheel (10) which are fitted on the inner side of the ring-shaped plates (13, 14).
7. Water sport device in accordance with one of the Claims 1 to 6, characterized by the fact that the paddles (12) have at least one opening (12a), preferably at the ends of the paddles (12).
8. Water sport device in accordance with one of the Claims 1 to 7, characterized by the fact that a swivelling seat (31) or similar is suspended on the radial struts (18a).
9. Water sport device in accordance with one of the Claims 1 to 8, characterized by the fact that the inner side (11) of the wheel (10) is at least partially non-slip.
10. Water sport device in accordance with one of the Claims 1 to 9, characterized by the fact that the paddles are angled at the outer edge.
11. Water sport device in accordance with one of the Claims 1 to 10, characterized by the fact that paddles (12a) are provided on both face sides of the wheel (10b, 10c).
12. Water sport device in accordance with one of the Claims 1 to 11, characterized by the fact that the angle of the paddles (12, 12a) can be adjusted.
13. Water sport device in accordance with Claim 11 or 12, characterized by the fact that a rotatable adjusting ring is mounted on the outer side of the wheel which is positively connected to all paddles.
14. Water sport device in accordance with Claim 12, characterized by the fact that the paddles (12, 12a) can be pivoted and that they are limited in their movement to one side only in extended position.
EP84106024A 1983-06-18 1984-05-26 Water sport apparatus in the form of a wheel Expired EP0129103B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106024T ATE32322T1 (en) 1983-06-18 1984-05-26 WHEEL-SHAPED WATER SPORTS EQUIPMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8317743 1983-06-18
DE8317743U 1983-06-18

Publications (2)

Publication Number Publication Date
EP0129103A1 EP0129103A1 (en) 1984-12-27
EP0129103B1 true EP0129103B1 (en) 1988-02-03

Family

ID=6754366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106024A Expired EP0129103B1 (en) 1983-06-18 1984-05-26 Water sport apparatus in the form of a wheel

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EP (1) EP0129103B1 (en)
AT (1) ATE32322T1 (en)
DE (1) DE3469151D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008061533A1 (en) * 2006-11-23 2008-05-29 Koelle Per Training play wheel
DE10206642B4 (en) * 2002-02-12 2008-07-10 Dorfman, Isaak, Dipl.-Ing. Impeller especially for use on liquid media
CN103405915A (en) * 2013-08-27 2013-11-27 苏州市佳腾精密模具有限公司 Over-water rotating wheel
CN105173022A (en) * 2015-07-30 2015-12-23 郑成恩 Overwater recreational boat

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740886C1 (en) * 1987-12-02 1989-08-10 Waldemar Mutschmann Watersports equipment which can roll over the water surface
DE3827689A1 (en) * 1988-08-16 1990-02-22 Ralf Tollkien Watercourse device
DE3836027A1 (en) * 1988-10-22 1990-04-26 Imre Horvath Piece of watersports equipment
US20220348049A1 (en) * 2021-04-30 2022-11-03 Zhenkun Wang Multi-functional vehicle autonomously operable under multi-terrain conditions

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR931658A (en) * 1946-07-29 1948-03-01 Hydrofoil
FR1258155A (en) * 1960-05-23 1961-04-07 Water sports equipment
DE2119588A1 (en) * 1971-04-22 1972-11-02 Maty as, Jan, Dipl.-Ing.; Watzlawik, Rudolf; 5000 Köln A water wheel made from an elastic or solid material
US3934291A (en) * 1974-08-23 1976-01-27 Douglas Leigh Research And Development Corporation Water sports wheel
FR2284515A1 (en) * 1974-09-10 1976-04-09 Jousse Andre Water vehicle propelled by floating wheels - has outer wheel compartments trapping air as wheels turn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206642B4 (en) * 2002-02-12 2008-07-10 Dorfman, Isaak, Dipl.-Ing. Impeller especially for use on liquid media
WO2008061533A1 (en) * 2006-11-23 2008-05-29 Koelle Per Training play wheel
CN103405915A (en) * 2013-08-27 2013-11-27 苏州市佳腾精密模具有限公司 Over-water rotating wheel
CN105173022A (en) * 2015-07-30 2015-12-23 郑成恩 Overwater recreational boat

Also Published As

Publication number Publication date
ATE32322T1 (en) 1988-02-15
DE3469151D1 (en) 1988-03-10
EP0129103A1 (en) 1984-12-27

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