EP1096980B2 - Travel device such as a skateboard or a scooter and similar - Google Patents

Travel device such as a skateboard or a scooter and similar Download PDF

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Publication number
EP1096980B2
EP1096980B2 EP99948643A EP99948643A EP1096980B2 EP 1096980 B2 EP1096980 B2 EP 1096980B2 EP 99948643 A EP99948643 A EP 99948643A EP 99948643 A EP99948643 A EP 99948643A EP 1096980 B2 EP1096980 B2 EP 1096980B2
Authority
EP
European Patent Office
Prior art keywords
footboard
wheel
running gears
running
foot
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
Application number
EP99948643A
Other languages
German (de)
French (fr)
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EP1096980B1 (en
EP1096980A1 (en
Inventor
Wim A. Ouboter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Micro Mobility Systems AG
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Micro Mobility Systems AG
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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00Roller skates; Skate-boards
    • A63C17/01Skateboards
    • A63C17/011Skateboards with steering mechanisms
    • A63C17/013Skateboards with steering mechanisms with parallelograms, follow up wheels or direct steering action
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00Roller skates; Skate-boards
    • A63C17/01Skateboards
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00Roller skates; Skate-boards
    • A63C17/01Skateboards
    • A63C17/014Wheel arrangements
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00Roller skates; Skate-boards
    • A63C17/01Skateboards
    • A63C17/014Wheel arrangements
    • A63C17/015Wheel arrangements with wheels arranged in two pairs
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00Roller skates; Skate-boards
    • A63C17/26Roller skates; Skate-boards with special auxiliary arrangements, e.g. illuminating, marking, or push-off devices

Definitions

  • the present invention relates to a scooter.
  • Such rides are used by preferably children and adolescents on the one hand as a means of transportation, on the other hand as a sports device or simply for pastime and pleasure. Scooters are more likely to be used as play equipment for smaller children, but scooters have also become known that are intended for adults to travel in inner-city areas of large cities.
  • a driving device referred to in the preamble of claim 1 is known from the WO 95/34461 calculating unit (U.S.-A-5,169,166 known.
  • the collapsible scooter has a rigid footboard. In a particular embodiment, a central part of the footboard is lowered relative to the ends.
  • Scooters are preferably used on sidewalks
  • the surface of such serving as a roadway surfaces are usually fixed, for example tarred or paved, but occasionally covered with plates. Bigger bumps are not rare. Since the driving devices of the aforementioned type have unsprung wheels, the shocks generated during driving are perceived by the users of the driving devices as very unpleasant.
  • the driving characteristics of scooters vary depending on the design of these vehicles.
  • Out DE-A-2820934 is a skateboard with brake mechanism known.
  • the braking device prevents rolling of the skateboard in unloaded condition. In the centrally loaded state, the brake is released due to a deformation of the footboard of the skateboard. By a targeted stronger load on the flexible and spring-capable footboard while driving a targeted braking effect can be achieved.
  • a foldable scooter which consists essentially of a front, a single wheel bearing drive carrier with hingedly connected handlebar, a running board and a mounted under the footboard rear wheel axle with two wheels.
  • the footboard may consist of a front and a rear part, wherein the two parts are connected to each other via a hinge.
  • the joint may be made of a shock absorbing material.
  • a part of the footboard can be made elastic.
  • US 4,799,701 discloses a scooter whose running board is flexible.
  • Fig. 1 means a footboard connected to a front drive 2 on one side and a rear drive 3 on the other side.
  • the two drives 2 and 3 are identical.
  • Each of the drives 2, 3 consists of a carrier 4, an associated wheel holder 5 and at least one wheel 6, which is rotatably mounted in this wheel holder 5.
  • the wheels 6 may, for example, be roller-shaped rollers, as are customary in the case of roller boards according to the prior art. In such a case, the wheel support 5 receives two wheels 6, which are rotatable about a common axis.
  • the footboard 1 with the drives 2, 3 is detachably connected.
  • one of the drives 2, 3 can be replaced by such a different type or that both drives 2, 3 or can be exchanged for those of other types.
  • a front drive 2 in which the axis about which the wheels 6 rotate, is pivotable
  • the rear drive 3 such a different type, namely, for example, with a fixed axis, is used.
  • the footboard 1 also of such a type that it under the load that arises in the use of such a skate in that a user acts with his body weight on the footboard 1, resiliently yields.
  • the deflection is advantageously about 2 to 3 cm. This ensures that the driving device caused by road bumps shocks relative soft rebound, so that these shocks act in a very tempered form on the user. This gives a pleasant feeling when driving.
  • a footboard 1 can be exchanged for another footboard 1.
  • a first type of running board 1 has, for example, dimensions adapted to the body dimensions and body weight of an adult, while a second type of running board 1 is adapted to the body dimensions and body weight of a child.
  • the adaptation to different body measurements and different body weight is done on the one hand by varying the dimensions of the footboard 1, namely length, width and thickness. All three dimensions also affect the deflection.
  • Another possibility for variation is the use of different materials for the footboard 1. So, for example, plastic can be used as well as multilayer glued wood. For the deflection in function of the weight of the modulus of elasticity of the material is also relevant.
  • the dimensions of variants of the footboard 1 are to be selected depending on the requirements.
  • the length is approximately in the range 50 to 80 cm, the width in the range 12 to 18 cm, while the thickness may be in the range of 8 to 25 mm, which depends mainly on the material used and its modulus of elasticity.
  • the material for the footboard 1 multi-layer glued-on wood, which is known by the term plywood, is used.
  • This material is characterized by the fact that it is on the one hand relatively high load capacity, and on the other hand, it attenuates vibrations remarkably.
  • a footboard 1 acts as a shock absorber
  • the footboard 1 can therefore be made of plastic.
  • the footboard 1 is possible to form the footboard 1 as a hollow box.
  • the footboard 1 It is advantageous if material and dimensions of the footboard 1 are selected so that a spring rate of about 0.1 mm / kg results. If the footboard 1 is loaded approximately 30 kg in the middle, it will spring in by 3 mm. However, "harder" running boards 1 with a spring rate of, for example, 0.03 mm / kg or even “softer” running boards 1 with a spring rate of, for example, 0.25 mm / kg can be realized. In the aforementioned embodiment of the footboard 1 as a hollow box, it is then advantageously possible to use reinforcing struts in individual cavities. With the help of such reinforcing struts, the spring rate can be subsequently changed to suit the wishes of the user.
  • such a variability of the spring rate can be realized in a footboard 1 shown in FIG. 2 made of plywood, for example, in that grooves N are provided on the two longitudinal sides, in the reinforcing struts S are used.
  • the change in the spring rate by the use of reinforcing struts S has the advantage that not several different running boards 1 must be provided. This reduces the variety of variants without having to forego the advantage of different spring rates.
  • the drives 2, 3 can be connected in a simple manner to the running board 1, the drives 2, 3 have a slot 7 into which the running board 1 can be inserted.
  • the connection between drive 2, 3 and footboard 1 is fixed for example by means not shown in FIG. 1 screws.
  • a single drive 2 is shown. It consists in an analogous manner of a support 4, which has a slot 7 for insertion of a footboard 1, not shown in this figure.
  • the fastening means such as screws are not shown.
  • the wheel 6 is not arranged under the support 4, but in the usual way for scooters such that a rear part of the carrier 4 is formed as a fork 8, in which an axis 9 to the the wheel 6 rotates, is attached.
  • the wheel 6 is not a roller-shaped wheel in the manner of the skateboards, but advantageously one of such a type as used in inline skates. Equipped with such a drive 2, the Fahrgerat offers completely different driving characteristics than a equipped according to Fig 1 Fahrgerat.
  • FIG. 4 shows a further embodiment of a drive 2.
  • This is a steerable drive 2 with two wheels, which is particularly suitable as a front drive due to its steerability.
  • Fig. 4 dashed lines, a part of the footboard 1 visible, which is secured in the slot 7 of the support 4 by means of two screws 10.
  • a left ball joint 12 and a right ball joint 13 At the slot 7 opposite the front end 11 of the support 4 are two joints, namely a left ball joint 12 and a right ball joint 13.
  • a left steering knuckle 14 is pivotable and about the right ball joint 13 is correspondingly a right steering knuckle 15th pivotable.
  • the possible pivoting about the support joints 12, 13 is indicated by arrows.
  • the support joints 12 and 13 opposite ends of the two stub axles 14, 15 have joints 16 through which these ends are connected to a tie rod 17.
  • the connecting line between the two Tragaeschen 12, 13 thus forms together with the two stub axles 14, 15 and the tie rod 17 is a parallelogram.
  • the two stub axles 14, 15 are coupled together, so that they are only simultaneously pivotable.
  • a left wheel axle 18 is rigidly secured, about the other end of a left front wheel 19 is freely rotatable, for example by means of a ball bearing, not shown.
  • a right wheel axle 20 rigidly fixed to the other end of a right front wheel 21 is freely rotatable.
  • Each of the front wheels 19, 21 thus has a separate wheel axle 18, 20, so that there is an independent suspension.
  • the pivoting of the two stub axles 14, 15 causes the rigidly connected to the stub axles 14, 15 wheel axles 18, 20 are pivoted by the same angular amount as the stub axles 14, 15. Accordingly, also pivot the front wheels 19, 21.
  • the two front wheels 19, 21 are parallel to the longitudinal axis of the entire driving device, resulting in a straight-ahead.
  • one of the two stub axles 14, 15 is deflected, for example, 15 degrees clockwise with respect to the position shown, which, because of the tie rod 17, causes the other stub axle 15, 14 to be deflected in the same way, then the front wheels 19, 21 so obliquely to the right that they are also deflected relative to the longitudinal axis of the driving device by 15 degrees. With the driving device then a right turn would be driven.
  • a driver pin 22 which is movable by a handlebar, not shown, in the direction indicated by dashed arrows.
  • right front wheel 21 The visible in this side view right front wheel 21 is shown here only with its outline, so as not to obscure the view of the underlying parts. Behind this front wheel 21, the right stub axle 15 is visible. At this stub axle 15, the right wheel axle 20 is rigidly secured. It is perpendicular to the drawing plane in this view, so it is visible only in the view of its diameter. From the not visible in Fig. 5 right ball joint 13 (Fig. 4) only the axis of rotation A 13 is shown here. The axis of rotation A 12 of the left-hand support joint 12 (FIG. 4) is located behind it, so it is likewise not visible. The axis of the joints 16 is designated A 16 .
  • the angle between the two axes of rotation A 12 , A 13 of the support joints 12, 13 and the vertical is preferably about 20 to 60 degrees, with a value of 47 degrees has been found to be the optimum value.
  • the axes of rotation A 12 , A 13 of the support joints 12, 13 are so inclined that they are on the one hand parallel to a ideal surface which is perpendicular to a center line M (Fig. 4) of the footboard 1 and the entire driving device, and that On the other hand, they run from the top to the bottom, from the front.
  • the left front axle 18 is slightly inclined forward, but at the same time also slightly downwards.
  • the front wheels 19, 21 are slightly inclined in both axes, but for reasons of clarity in Fig. 4 in terms of obliquely upward or not shown below.
  • the right front wheel 21 are slightly higher up and the left front wheel 19 a little further down.
  • the footboard 1 is so inclined about the center line M 1 that it is slightly closer to the road with its right edge, while the distance of the left edge to the roadway slightly larger is.
  • the front wheels 19, 21 are slightly inclined in this steering construction, it is advantageous if they have no cylindrical tread, but are also of the type, as used in inline skates use.
  • the user of the driving device can accordingly control the direction of travel solely by shifting his weight.
  • a handlebar is not needed.
  • This weight shift can be done in several ways. He can, for example, put one of his feet sideways offset on the footboard 1, but he can also tilt his body.
  • Figs. 6 and 7 a largely corresponding to the aforementioned chassis embodiment is shown schematically.
  • knuckle 14, 15 are present in the same way, on the one hand to support joints 12, 13 are rotatable and the other hand are connected to a tie rod 17 which are connected to the stub axles 14, 15 by means of joints 16.
  • This tie rod 17 is displaceable in the direction indicated by an arrow.
  • a return device is present, which identifies a rigidly attached to the front end 11 of the carrier 4 stop 30. On the tie rod 17 each a holder 31 are attached near the two ends.
  • each damper 32 consists of a first perforated disk 33 and a second perforated disk 34 and a ring 35 arranged between the perforated disks 33, 34.
  • the inner diameters of the perforated disks 33, 34 are larger than the diameter of the tie rod 17, so that they are free relative to the tie rod 17 are mobile.
  • the ring 35 is dimensioned so that its inner diameter is slightly smaller than the diameter of the tie rod 17. This produces the ring 35 on the tie rod 17 a sliding friction.
  • compression springs 36 are arranged between damper 32 and holder 31.
  • the compression springs 36 are biased between damper 32 and holder 31. This ensures that the stop 30 remains without any other force acting in a straight line corresponding middle position, as shown in Fig. 6
  • the bias of one of the compression springs 36 are overcome before it can lead to a deflection of the wheels.
  • Fig. 7 this arrangement is shown with strong deflection of the wheels.
  • One of the compression springs 36 is in this case completely relaxed, while the other compression spring 36 is strongly compressed. By this arrangement it is achieved that the weight shift of the user must take place against one of the compression springs 36. This improves, as experiments have shown, the sensitive controllability of the driving device in a special way.
  • the friction generated by the dampers 32 is variable. This is advantageously achieved in that the tie rod 17 does not have a constant over the entire length diameter, but that the diameter of the tie rod 17 is largest in the middle and decreases towards the two-sided ends. If the landing gear is in the straight-ahead position, as shown in FIG. 6, the rings 35 are widened more strongly in their middle region due to the larger diameter of the tie rod 17, which results in a high degree of friction. If the wheels of the chassis, however, deflected stronger, as shown in Fig. 7, the one of the rings 35 of a damper 32 so far moved by the stopper 30 against the tie rod 17 that this ring 35 at a Location is located at which the diameter of the tie rod 17 is smaller. Correspondingly smaller is the sliding friction. This measure also serves to improve controllability by the user.
  • FIG. 8 shows a section through a slidable on the tie rod damper 32. The cut is in the ring 35. To the ring 35, a Bride 38 is placed. This Bride 38 has in a known manner an adjusting screw 39, with the Bride 38 can be more or less tightened. If the Rider 38 attracted only a little, the ring 35 is pressed only slightly. Accordingly, its friction on the tie rod 17 is smaller. When the strap 38 is tightened more, the pressure of the ring 35 increases, so that the friction is increased. This advantageously ensures that at higher speeds and uneven road the straight-ahead is more stabilized.

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  • Motorcycle And Bicycle Frame (AREA)
  • Friction Gearing (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

The invention relates to a travel device, such as a skateboard or a scooter and similar, comprising two running gears (2, 3), each of which has at least one wheel (6), and at least one of said running gears (2, 3) being steerable. According to the invention, a foot-board (1) is provided, connecting the two running gears (2, 3). Said foot-board is elastically deformable and has a spring rate in the range of 0.03 to 0.25 mm/kg. The foot-board (1) is detachably connected to the running gears (2, 3). Several foot-boards (1) with different, progressive spring rates are provided so that the travel device can be adapted to the different requirements of different users. The individual foot boards (1) are characterised by different dimensions and/or different materials. Reinforcement struts can also be introduced into the foot board (1). Running gears (2, 3) with different constructions and functioning modes can be combined with foot boards (1) of this type. The invention therefore provides a means of adapting a travel device to the user's requirements in terms of the quality of movement, especially the spring system.

Description

Die vorliegende Erfindung bezieht sich auf einen Roller.The present invention relates to a scooter.

Solche Fahrgeräte werden von vorzugsweise von Kindern und Jugendlichen einerseits als Fortbewegungsmittel, andererseits aber als Sportgerät oder einfach zum Zeitvertreib und Vergnügen verwendet. Dabei gelten Roller eher als Spielgerät für kleinere Kinder, doch sind auch Roller bekanntgeworden, die für Erwachsene zur Fortbewegung in Innenstadibereichen von Großstädten gedacht sind.Such rides are used by preferably children and adolescents on the one hand as a means of transportation, on the other hand as a sports device or simply for pastime and pleasure. Scooters are more likely to be used as play equipment for smaller children, but scooters have also become known that are intended for adults to travel in inner-city areas of large cities.

Ein Fahrgerät der im Oberbegriff des Anspruchs 1 genannten Art ist aus der WO 95/34461 bzw.der US-A-5 169 166 bekannt. Der zusammenklappbare Roller weist ein starres Trittbrett auf. In einer besonderen Ausgestaltung ist ein mittlerer Teil des Trittbretts gegenüber den Enden abgesenkt.A driving device referred to in the preamble of claim 1 is known from the WO 95/34461 bzw.der U.S.-A-5,169,166 known. The collapsible scooter has a rigid footboard. In a particular embodiment, a central part of the footboard is lowered relative to the ends.

Aus der US-A-4,179,133 ist eine Einrichtung bekannt, mit der ein Rollbrett in einen Roller verwandelt werden kann.From the US-A-4,179,133 is known a device with which a skateboard can be turned into a scooter.

Roller werden vorzugsweise auf Gehwegen benutzt Die Oberfläche von solchen als Fahrbahn dienenden Flächen sind meist befestigt, beispielsweise geteert oder gepflastert, gelegentlich aber auch mit Platten bedeckt. Größere Unebenheiten sind nicht selten. Da die Fahrgeräte der vorgenannten Art ungefederte Räder aufweisen, werden die beim Fahren erzeugten Stöße von den Benutzern der Fahrgeräte als sehr unangenehm empfunden. Die Fahreigenschaften von Rollern sind je nach Bauart dieser Fahrgeräte unterschiedlich.Scooters are preferably used on sidewalks The surface of such serving as a roadway surfaces are usually fixed, for example tarred or paved, but occasionally covered with plates. Bigger bumps are not rare. Since the driving devices of the aforementioned type have unsprung wheels, the shocks generated during driving are perceived by the users of the driving devices as very unpleasant. The driving characteristics of scooters vary depending on the design of these vehicles.

Aus DE-A-2820934 ist ein Skateboard mit Bremsmechanismus bekannt. Die Bremseinrichtung verhindert ein Rollen des Skateboards in unbelastetem Zustand. Im mittig belasteten Zustand löst sich die Bremse aufgrund einer Verformung des Trittbretts des Skateboards. Durch eine gezielte stärkere Belastung des flexiblen und fedefähigen Trittbretts während der Fahrt kann eine gezielte Bremswirkung erreicht werden.Out DE-A-2820934 is a skateboard with brake mechanism known. The braking device prevents rolling of the skateboard in unloaded condition. In the centrally loaded state, the brake is released due to a deformation of the footboard of the skateboard. By a targeted stronger load on the flexible and spring-capable footboard while driving a targeted braking effect can be achieved.

Aus WO 98/46474 ist ein faltbarer Tretroller bekannt, der im Wesentlichen aus einem vorderen, ein einzelnes Rad tragenden Laufwerksträger mit daran klappbar verbundener Lenkstange, einem Trittbrett und einer unter dem Trittbrett befestigten Hinterradachse mit zwei Rädern besteht. Gemäß einer bevorzugten Ausführungsform kann das Trittbrett aus einem vorderen und einem hinteren Teil bestehen, wobei die beiden Teile über ein Gelenk miteinander verbunden sind. Das Gelenk kann aus einem Stoß absorbierenden Material bestehen. Ein Teil des Trittbretts kann elastisch ausgeführt sein. US 4 799 701 offenbart einen Roller dessen Trittbrett flexibel ist.Out WO 98/46474 a foldable scooter is known, which consists essentially of a front, a single wheel bearing drive carrier with hingedly connected handlebar, a running board and a mounted under the footboard rear wheel axle with two wheels. According to a preferred embodiment, the footboard may consist of a front and a rear part, wherein the two parts are connected to each other via a hinge. The joint may be made of a shock absorbing material. A part of the footboard can be made elastic. US 4,799,701 discloses a scooter whose running board is flexible.

Es ist die Aufgabe der vorliegenden Erffndung, einen Roller anzugeben, der verbesserte Fahreigenschaften aufweist.It is the object of the present invention to provide a scooter having improved ride characteristics.

Diese Aufgabe wird durch den Gegenstand des Patentanspruchs 1 gelöst Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is solved by the subject matter of patent claim 1. Preferred embodiments of the invention are the subject of the subclaims.

Nachfolgend wird ein Ausfuhrungsbeispiel der Erfindung anhand der Zeichnung naher erläutert.Hereinafter, an exemplary embodiment of the invention will be explained in more detail with reference to the drawing.

Es zeigen:

Fig. 1
ein Schema eines Rollbretts,
Fig. 2
einen Schnitt durch ein Trittbrett,
Fig. 3
ein einzelnes Laufwerk,
Fig. 4
eine weitere Ausführungsform eines Laufwerks in einer Aufsicht,
Fig. 5
die gleiche Ausführungsform in einer schematischen Seitenansicht,
Fig. 6
ein Schema eines modifizierten Laufwerks bei Geradeaus-Lauf,
Fig. 7
ein Schema dieses Laufwerks bei Kurvenfahrt und
Fig. 8
einen Schnitt durch einen Dämpfer.
Show it:
Fig. 1
a scheme of a skateboard,
Fig. 2
a section through a running board,
Fig. 3
a single drive,
Fig. 4
another embodiment of a drive in a plan view,
Fig. 5
the same embodiment in a schematic side view,
Fig. 6
a schematic of a modified drive on straight-ahead,
Fig. 7
a scheme of this drive when cornering and
Fig. 8
a section through a damper.

In der Fig. 1 bedeutet 1 ein Trittbrett, das auf der einen Seite mit einem vorderen Laufwerk 2 und auf der anderen Seite mit einem hinteren Laufwerk 3 verbunden ist. Im dargestellten Beispiel sind die beiden Laufwerke 2 und 3 identisch. Jedes der Laufwerke 2, 3 besteht aus einem Träger 4, einer damit verbundenen Radhalterung 5 und mindestens einem Rad 6, das in dieser Radhalterung 5 drehbar gelagert ist. Bei den Rädern 6 kann es sich beispielsweise um walzenförmige Rollen handeln, wie sie bei Rollbrettern gemäß dem Stand der Technik üblich sind. In einem solchen Fall nimmt die Radhalterung 5 zwei Räder 6 auf, die um eine gemeinsame Achse drehbar sind.In Fig. 1, 1 means a footboard connected to a front drive 2 on one side and a rear drive 3 on the other side. In the example shown, the two drives 2 and 3 are identical. Each of the drives 2, 3 consists of a carrier 4, an associated wheel holder 5 and at least one wheel 6, which is rotatably mounted in this wheel holder 5. The wheels 6 may, for example, be roller-shaped rollers, as are customary in the case of roller boards according to the prior art. In such a case, the wheel support 5 receives two wheels 6, which are rotatable about a common axis.

Erfindungsgemäß ist das Trittbrett 1 mit den Laufwerken 2, 3 lösbar verbunden. Damit ist es möglich, daß eines der Laufwerke 2, 3 gegen ein solches anderer Bauart ausgewechselt werden kann oder daß beide Laufwerke 2, 3 bzw. gegen solche anderer Bauart getauscht werden können. So ist es beispielsweise möglich, ein vorderes Laufwerk 2 zu benutzen, bei dem die Achse, um die die Räder 6 drehen, verschwenkbar ist, während als hinteres Laufwerk 3 ein solches anderer Bauart, nämlich beispielsweise mit feststehender Achse, benutzt wird.According to the footboard 1 with the drives 2, 3 is detachably connected. Thus, it is possible that one of the drives 2, 3 can be replaced by such a different type or that both drives 2, 3 or can be exchanged for those of other types. For example, it is possible to use a front drive 2, in which the axis about which the wheels 6 rotate, is pivotable, while the rear drive 3, such a different type, namely, for example, with a fixed axis, is used.

Erfindungsgemaß ist das Trittbrett 1 außerdem von solcher Bauart, daß es unter der Belastung, die bei der Verwendung eines solchen Rollbretts dadurch entsteht, daß ein Benutzer mit seinem Körpergewicht auf das Trittbrett 1 einwirkt, federnd nachgibt. Bei in üblicher Weise etwa mittiger Belastung des Trittbretts 1 durch eine Person beträgt die Einfederung vorteilhaft etwa 2 bis 3 cm. Damit wird erreicht, daß das Fahrgerät durch Fahrbahn-Unebenheiten verursachte Stöße relativ weich ausfedert, so daß diese Stöße in sehr gemilderter Form auf den Benutzer wirken. Dies ergibt ein angenehmes Gefühl beim Fahren.According to the invention, the footboard 1 also of such a type that it under the load that arises in the use of such a skate in that a user acts with his body weight on the footboard 1, resiliently yields. In the usual way about central load of the footboard 1 by a person, the deflection is advantageously about 2 to 3 cm. This ensures that the driving device caused by road bumps shocks relative soft rebound, so that these shocks act in a very tempered form on the user. This gives a pleasant feeling when driving.

Durch die Erfindung wird erreicht, daß ein solches Fahrgerät an die Bedürfnisse des Benutzers leicht anpaßbar ist. So kann beispielsweise ein Trittbrett 1 gegen ein anderes Trittbrett 1 ausgetauscht werden. Eine erste Bauart eines Trittbretts 1 weist beispielsweise auf die Körpermaße und das Körpergewicht eines Erwachsenen abgestimmte Dimensionen auf, während eine zweite Bauart eines Trittbretts 1 auf die Körpermaße und das Körpergewicht eines Kindes abgestimmt ist. Die Anpassung an unterschiedliche Körpermaße und unterschiedliches Körpergewicht geschieht einerseits durch Variation der Maße des Trittbretts 1, nämlich Länge, Breite und Dicke. Alle drei Dimensionen beeinflussen auch die Einfederung. Eine weitere Möglichkeit zur Variation besteht in der Verwendung unterschiedlicher Werkstoffe für das Trittbrett 1. So kann beispielsweise Kunststoff ebenso verwendet werden wie mehrlagiges geleimtes Holz. Für die Einfederung in Funktion des Gewichts ist dabei der Elastizitätsmodul des Werkstoffs zusätzlich maßgebend.By the invention it is achieved that such a driving device is easily adaptable to the needs of the user. For example, a footboard 1 can be exchanged for another footboard 1. A first type of running board 1 has, for example, dimensions adapted to the body dimensions and body weight of an adult, while a second type of running board 1 is adapted to the body dimensions and body weight of a child. The adaptation to different body measurements and different body weight is done on the one hand by varying the dimensions of the footboard 1, namely length, width and thickness. All three dimensions also affect the deflection. Another possibility for variation is the use of different materials for the footboard 1. So, for example, plastic can be used as well as multilayer glued wood. For the deflection in function of the weight of the modulus of elasticity of the material is also relevant.

Die Dimensionen von Varianten des Trittbretts 1 sind je nach Anforderungen zu wählen. Die Länge liegt etwa im Bereich 50 bis 80 cm, die Breite im Bereich 12 bis 18 cm, während die Dicke im Bereich von 8 bis 25 mm liegen kann, wobei dies vor allem vom verwendeten Material und dessen Elastizitätsmodul abhängt.The dimensions of variants of the footboard 1 are to be selected depending on the requirements. The length is approximately in the range 50 to 80 cm, the width in the range 12 to 18 cm, while the thickness may be in the range of 8 to 25 mm, which depends mainly on the material used and its modulus of elasticity.

Besonders vorteilhaft ist es, wenn als Material für das Trittbrett 1 mehrlagiges geleimtes Holz, das unter dem Begriff Sperrholz bekannt ist, verwendet wird. Dieses Material zeichnet sich dadurch aus, daß es einerseits relativ hoch belastbar ist, und daß es andererseits Schwingungen bemerkenswert dämpft. Dadurch wirkt ein solches Trittbrett 1 als Stoßdämpfer,It is particularly advantageous if, as the material for the footboard 1, multi-layer glued-on wood, which is known by the term plywood, is used. This material is characterized by the fact that it is on the one hand relatively high load capacity, and on the other hand, it attenuates vibrations remarkably. As a result, such a footboard 1 acts as a shock absorber,

Gute Dämpfungseigenschaften weisen auch Kunststoffe auf Vorteilhaft kann das Trittbrett 1 deshalb auch aus Kunststoff hergestellt sein. Bei Verwendung eines Werkstoffs dieser Gruppe ist es möglich, das Trittbrett 1 als Hohlkasten auszubilden.Good damping properties also have plastics Advantageously, the footboard 1 can therefore be made of plastic. When using a material of this group, it is possible to form the footboard 1 as a hollow box.

Vorteilhaft ist es, wenn Material und Dimensionen des Trittbretts 1 so gewählt werden, daß sich eine Federrate von etwa 0,1 mm/kg ergibt. Wird das Trittbrett 1 etwa mittig mit 30 kg belastet, so federt es um 3 mm ein. Es können aber auch "härtere" Trittbretter 1 mit einer Federrate von beispielsweise 0,03 mm/kg oder auch "weichere" Trittbretter 1 mit einer Federrate von zum Beispiel 0,25 mm/kg verwirklicht werden. Bei der vorerwähnten Ausbildung des Trittbretts 1 als Hohlkasten ist es dann vorteilhaft möglich, in einzelne Hohlräume Verstärkungsstreben einzusetzen. Mit Hilfe solcher Verstärkungsstreben kann die Federrate nachträglich verändert werden, um sie den Wünschen des Benutzers anzupassen. Auch bei anderen Ausführungsformen läßt sich eine solche Veränderbarkeit der Federrate realisieren, bei einem in der Fig. 2 gezeigten Trittbrett 1 aus Sperrholz etwa dadurch, daß an den beiden Längsseiten Nuten N vorgesehen werden, in die Verstärkungsstreben S einsetzbar sind. Die Veränderung der Federrate durch das Einsetzen von Verstärkungsstreben S hat den Vorteil, daß nicht mehrere unterschiedliche Trittbretter 1 vorgesehen sein müssen. Damit reduziert sich die Variantenvielfalt, ohne daß auf den Vorteil unterschiedlicher Federraten verzichtet werden müßte.It is advantageous if material and dimensions of the footboard 1 are selected so that a spring rate of about 0.1 mm / kg results. If the footboard 1 is loaded approximately 30 kg in the middle, it will spring in by 3 mm. However, "harder" running boards 1 with a spring rate of, for example, 0.03 mm / kg or even "softer" running boards 1 with a spring rate of, for example, 0.25 mm / kg can be realized. In the aforementioned embodiment of the footboard 1 as a hollow box, it is then advantageously possible to use reinforcing struts in individual cavities. With the help of such reinforcing struts, the spring rate can be subsequently changed to suit the wishes of the user. In other embodiments, such a variability of the spring rate can be realized in a footboard 1 shown in FIG. 2 made of plywood, for example, in that grooves N are provided on the two longitudinal sides, in the reinforcing struts S are used. The change in the spring rate by the use of reinforcing struts S has the advantage that not several different running boards 1 must be provided. This reduces the variety of variants without having to forego the advantage of different spring rates.

Damit die Laufwerke 2, 3 auf einfache Weise mit dem Trittbrett 1 verbindbar sind, weisen die Laufwerke 2, 3 einen Schlitz 7 auf, in den das Trittbrett 1 eingeschoben werden kann. Die Verbindung zwischen Laufwerk 2, 3 und Trittbrett 1 wird beispielsweise mittels in der Fig. 1 nicht dargestellter Schrauben fixiert.So that the drives 2, 3 can be connected in a simple manner to the running board 1, the drives 2, 3 have a slot 7 into which the running board 1 can be inserted. The connection between drive 2, 3 and footboard 1 is fixed for example by means not shown in FIG. 1 screws.

In der Fig. 3 ist ein einzelnes Laufwerk 2 gezeigt. Es besteht in analoger Weise aus einem Träger 4, der einen Schlitz 7 zum Einschieben eines in dieser Figur nicht dargestellten Trittbretts 1 aufweist. Auch die Befestigungsmittel wie Schrauben sind nicht gezeigt. Im Unterschied zum Beispiel der Fig. 1 ist hier das Rad 6 nicht unter dem Träger 4 angeordnet, sondern in der bei Rollern üblichen Art derart, daß ein hinterer Teil des Trägers 4 als Gabel 8 ausgebildet ist, in der eine Achse 9, um das sich das Rad 6 dreht, befestigt ist. In diesem Fall ist das Rad 6 kein walzenförmiges Rad nach Art der Rollbretter, sondern vorteilhaft eines einer solchen Bauart, wie sie bei Inline Skates Verwendung finden. Mit einem solchen Laufwerk 2 ausgestattet, bietet das Fahrgerat gänzlich andere Fahreigenschaften als ein nach Fig 1 ausgestattetes Fahrgerat.In Fig. 3, a single drive 2 is shown. It consists in an analogous manner of a support 4, which has a slot 7 for insertion of a footboard 1, not shown in this figure. The fastening means such as screws are not shown. In contrast to the example of Fig. 1 here the wheel 6 is not arranged under the support 4, but in the usual way for scooters such that a rear part of the carrier 4 is formed as a fork 8, in which an axis 9 to the the wheel 6 rotates, is attached. In this case, the wheel 6 is not a roller-shaped wheel in the manner of the skateboards, but advantageously one of such a type as used in inline skates. Equipped with such a drive 2, the Fahrgerat offers completely different driving characteristics than a equipped according to Fig 1 Fahrgerat.

In der Fig. 4 ist eine weitere Ausführungsform eines Laufwerks 2 gezeigt. Hierbei handelt es sich um ein lenkfahiges Laufwerk 2 mit zwei Radern, das aufgrund seiner Lenkbarkeit insbesondere als vorderes Laufwerk geeignet ist.FIG. 4 shows a further embodiment of a drive 2. This is a steerable drive 2 with two wheels, which is particularly suitable as a front drive due to its steerability.

In der Fig. 4 ist, gestrichelt gezeichnet, ein Teil des Trittbretts 1 sichtbar, das im Schlitz 7 des Trägers 4 mittels zwei Schrauben 10 befestigt ist. Am dem Schlitz 7 gegenüberliegenden vorderen Ende 11 des Trägers 4 befinden sich zwei Gelenke, nämlich ein linkes Traggelenk 12 und ein rechtes Traggelenk 13. Um das linke Traggelenk 12 ist ein linker Achsschenkel 14 verschwenkbar und um das rechte Traggelenk 13 ist entsprechend ein rechter Achsschenkel 15 verschwenkbar. Die mögliche Verschwenkung um die Traggelenke 12, 13 ist mit Pfeilen bezeichnet. Die den Traggelenken 12 und 13 entgegengesetzten Enden der beiden Achsschenkel 14, 15 weisen Gelenke 16 auf, durch die diese Enden mit einer Spurstange 17 verbunden sind. Die Verbindungslinie zwischen den beiden Tragaelenken 12, 13 bildet also zusammen mit den beiden Achsschenkeln 14, 15 und der Spurstange 17 ein Parallelogramm. Durch die Spurstange 17 wird erreicht, das beide Achsschenkel 14, 15 miteinander gekoppelt sind, so daß sie nur gleichzeitig verschwenkbar sind. Am linken Achsschenkel 14 ist eine linke Radachse 18 starr befestigt, um deren anderes Ende ein linkes Vorderrad 19 frei drehbar ist, beispielsweise mittels eines nicht dargestellten Kugellagers. In gleicher Weise ist am rechten Achsschenkel 15 eine rechte Radachse 20 starr befestigt, um deren anderes Ende ein rechtes Vorderrad 21 frei drehbar ist. Jedes der Vorderräder 19, 21 weist also eine separate Radachse 18, 20 auf, so daß sich eine Einzelradaufhängung ergibt.In Fig. 4, dashed lines, a part of the footboard 1 visible, which is secured in the slot 7 of the support 4 by means of two screws 10. At the slot 7 opposite the front end 11 of the support 4 are two joints, namely a left ball joint 12 and a right ball joint 13. To the left ball joint 12, a left steering knuckle 14 is pivotable and about the right ball joint 13 is correspondingly a right steering knuckle 15th pivotable. The possible pivoting about the support joints 12, 13 is indicated by arrows. The support joints 12 and 13 opposite ends of the two stub axles 14, 15 have joints 16 through which these ends are connected to a tie rod 17. The connecting line between the two Tragaelenken 12, 13 thus forms together with the two stub axles 14, 15 and the tie rod 17 is a parallelogram. By the tie rod 17 is achieved, the two stub axles 14, 15 are coupled together, so that they are only simultaneously pivotable. On the left steering knuckle 14, a left wheel axle 18 is rigidly secured, about the other end of a left front wheel 19 is freely rotatable, for example by means of a ball bearing, not shown. In the same way is on right stub axle 15 a right wheel axle 20 rigidly fixed to the other end of a right front wheel 21 is freely rotatable. Each of the front wheels 19, 21 thus has a separate wheel axle 18, 20, so that there is an independent suspension.

Die Verschwenkung der beiden Achsschenkel 14, 15 führt dazu, daß die starr mit den Achsschenkeln 14, 15 verbundenen Radachsen 18, 20 um den gleichen Winkelbetrag verschwenkt werden wie die Achsschenkel 14, 15. Entsprechend verschwenken auch die Vorderräder 19, 21. In der Darstellung der Fig. 4 stehen die beiden Vorderräder 19, 21 parallel zur Längsachse des gesamten Fahrgeräts, woraus sich ein Geradeaus-Lauf ergibt. Wird einer der beiden Achsschenkel 14, 15 gegenüber der gezeichneten Stellung beispielsweise um 15 Grad im Uhrzeigersinn ausgelenkt, was wegen der Spurstange 17 dazu führt, daß auch der andere Achsschenkel 15,14 in gleicher Weise ausgelenkt wird, so stellen sich die Vorderräder 19, 21 derart schräg nach rechts, daß sie gegenüber des Längsachse des Fahrgeräts ebenfalls um 15 Grad ausgelenkt sind. Mit dem Fahrgerät würde dann eine Rechtskurve gefahren.The pivoting of the two stub axles 14, 15 causes the rigidly connected to the stub axles 14, 15 wheel axles 18, 20 are pivoted by the same angular amount as the stub axles 14, 15. Accordingly, also pivot the front wheels 19, 21. In the illustration 4, the two front wheels 19, 21 are parallel to the longitudinal axis of the entire driving device, resulting in a straight-ahead. If one of the two stub axles 14, 15 is deflected, for example, 15 degrees clockwise with respect to the position shown, which, because of the tie rod 17, causes the other stub axle 15, 14 to be deflected in the same way, then the front wheels 19, 21 so obliquely to the right that they are also deflected relative to the longitudinal axis of the driving device by 15 degrees. With the driving device then a right turn would be driven.

Die Lenkung einer solchen Konstruktion ist auf verschiedene Weise möglich. Beispielsweise kann an der Spurstange 17 ein Mitnehmerstift 22 befestigt sein, der von einer nicht dargestellten Lenkstange in den mit gestrichelten Pfeilen bezeichneten Richtung bewegbar ist.The steering of such a construction is possible in various ways. For example, may be attached to the tie rod 17, a driver pin 22 which is movable by a handlebar, not shown, in the direction indicated by dashed arrows.

Nachfolgend wird eine Ausgestaltung beschrieben, bei der auf eine Lenkstange verzichtet werden kann. Dabei ist die grundsätzliche Anordnung so, wie sie soeben beschrieben worden ist. Wesentlich ist dabei aber, daß die Achsen der Traggelenke 12, 13 und der Gelenke 16 deutlich gegen die Vertikale geneigt sind, was in der eine Seitenansicht von rechts darstellenden Fig. 4 verdeutlicht wird, wobei die in der Fig. 4 gezeigten Teile mit den gleichen Bezugszahlen versehen sind.Hereinafter, a configuration will be described in which can be dispensed with a handlebar. The basic arrangement is as it has just been described. It is essential, however, that the axes of the support joints 12, 13 and the joints 16 are significantly inclined to the vertical, which is illustrated in a side view from the right performing Fig. 4, wherein the parts shown in FIG. 4 with the same Reference numbers are provided.

Das in dieser Seitenansicht an sich sichtbare rechte Vorderrad 21 ist hier nur mit seiner Umrißlinie gezeigt, um die Sicht auf die dahinter liegenden Teile nicht zu verdecken. Hinter diesem Vorderrad 21 ist der rechte Achsschenkel 15 sichtbar. An diesem Achsschenkel 15 ist die rechte Radachse 20 starr befestigt. Sie steht in dieser Ansicht senkrecht zur Zeichenebene, ist also nur in der Ansicht ihres Durchmessers sichtbar. Vom in der Fig. 5 nicht sichtbaren rechten Traggelenk 13 (Fig. 4) ist hier nur dessen Drehachse A13 gezeigt. Die Drehachse A12 des linken Traggelenks 12 (Fig. 4) befindet sich dahinter, ist also ebenfalls nicht sichtbar. Die Achse der Gelenke 16 ist mit A16 bezeichnet. Der Winkel zwischen den beiden Drehachsen A12, A13 der Traggelenke 12, 13 und der Vertikalen beträgt vorzugsweise etwa 20 bis 60 Grad, wobei sich ein Wert von 47 Grad als Optimalwert herausgestellt hat. Die Drehachsen A12, A13 der Traggelenke 12, 13 liegen also derart schräg, daß sie einerseits parallel zu einer ideellen Fläche liegen, die senkrecht auf einer Mittellinie M (Fig. 4) des Trittbretts 1 bzw. des gesamten Fahrgeräts steht, und daß sie andererseits von vorn oben nach hinten unten verlaufen. In gleicher Weise geneigt sind die Drehachsen A16 der Gelenke 16, um sich die Spurstange 17 gegenüber den beiden Achsschenkeln 14, 15 verdreht, wenn die Achsschenkel 14, 15 um die Traggelenke 12, 13 in der in der Fig. 3 mit Pfeilen gekennzeichneten Richtung verdrehen.The visible in this side view right front wheel 21 is shown here only with its outline, so as not to obscure the view of the underlying parts. Behind this front wheel 21, the right stub axle 15 is visible. At this stub axle 15, the right wheel axle 20 is rigidly secured. It is perpendicular to the drawing plane in this view, so it is visible only in the view of its diameter. From the not visible in Fig. 5 right ball joint 13 (Fig. 4) only the axis of rotation A 13 is shown here. The axis of rotation A 12 of the left-hand support joint 12 (FIG. 4) is located behind it, so it is likewise not visible. The axis of the joints 16 is designated A 16 . The angle between the two axes of rotation A 12 , A 13 of the support joints 12, 13 and the vertical is preferably about 20 to 60 degrees, with a value of 47 degrees has been found to be the optimum value. The axes of rotation A 12 , A 13 of the support joints 12, 13 are so inclined that they are on the one hand parallel to a ideal surface which is perpendicular to a center line M (Fig. 4) of the footboard 1 and the entire driving device, and that On the other hand, they run from the top to the bottom, from the front. In the same way inclined are the axes of rotation A 16 of the joints 16 to the tie rod 17 with respect to the two stub axles 14, 15 is rotated when the stub axles 14, 15 about the support joints 12, 13 in the direction indicated by arrows in FIG twist.

Die deutliche Neigung der Drehachsen A12, A13, A16 des erwähnten Parallelogramms aus der Verbindungslinie der Traggelenke 12,13, den Achsschenkeln 14, 15 und der Spurstange 17 hat zur Folge, daß die an den Achsschenkeln 14,15 befestigten Radachsen 18, 20 nur dann horizontal verlaufen, wenn die Achsschenkel 14, 15 entsprechend der Darstellung in der Fig. 4 einen Winkel von genau 90 Grad gegen die Verbindungslinie der Traggelenke 12,13 bilden. In dieser Stellung stehen die Radachsen 18,20 außerdem in einem Winkel von genau 90 Grad gegen die Mittellinie M des Trittbretts 1 bzw. des gesamten Fahrgeräts, woraus sich ergibt, daß die Vorderräder 19,21 ihrerseits parallel zu dieser Mittellinie stehen. Das entspricht demThe significant inclination of the axes of rotation A 12 , A 13 , A 16 of the aforementioned parallelogram from the connecting line of the support joints 12,13, the stub axles 14, 15 and the tie rod 17 has the consequence that the attached to the stub axles 14,15 wheel axles 18, 20 only run horizontally when the stub axles 14, 15 as shown in FIG. 4 form an angle of exactly 90 degrees against the connecting line of the support joints 12,13. In this position, the axles 18,20 are also at an angle of exactly 90 degrees against the center line M of the footboard 1 and the entire driving device, with the result that the front wheels 19,21 in turn are parallel to this center line. That corresponds to that

Geradeaus-Lauf des Fahrgeräts.Straight running of the driving device.

Durch die vorgenannte Ausführung wird nun erreicht, daß die Radachsen 18, 20 und die Achsschenkel 14,15 aus der Stellung des Geradeaus-Laufs verschwenkt werden, sobald das Trittbrett 1 einseitig stärker belastet wird, wobei unter einseitig zu verstehen ist, daß der ideelle Lastangriffspunkt rechts oder links der gedachten Mittellinie M liegt.By the aforementioned embodiment it is now achieved that the wheel axles 18, 20 and the steering knuckle 14,15 are pivoted from the position of the straight-ahead, as soon as the footboard 1 is more heavily loaded on one side, which is to be understood by one side, that the ideal load application point right or left of the imaginary center line M lies.

Es werde angenommen, der ideelle Lastangriffspunkt auf dem Trittbrett 1 liege rechts der Mittellinie M, wie dies in der Fig. 4 dargestellt ist. Der ideelle Lastangriffspunkt mit dem Bezugszeichen L bezeichnet. Durch diesen Lastangriff ergibt sich automatisch, daß das rechte Vorderrad 21 stärker belastet wird als das linke Vorderrad 19. Daraus folgt auch, daß das Vorderrad 21 eine senkrecht wirkende Kraft auf die rechte Vorderachse 20 ausübt und diese wiederum auf den rechten Achsschenkel 15. Weil gleichzeitig die entsprechenden Gegenkräfte am linken Vorderrad 19, an der linken Vorderachse 18 und am linken Achsschenkel 14 abnehmen, folgt wegen der Schräglage der Drehachsen A12, A13 der Traggelenke 12, 13, daß die Achsschenkel 14, 15 um die Drehachsen A12, A13 der Traggelenke 12, 13 etwas im Uhrzeigersinn gedreht werden, daß sich entsprechend die Spurstange 17 mit verschiebt und daß sich die Vorderachsen 18,20 und die damit verbundenen Vorderräder 19, 21 mit den Achsschenkeln 14,15 entsprechend bewegen. Eine solche Stellung ist in der Fig. 4 punktiert eingezeichnet. Damit steht die rechte Vorderachse 20 etwas schräg nach hinten, gleichzeitig aber auch etwas schräg nach oben. Andererseits steht die linke Vorderachse 18 etwas schräg nach vorn, gleichzeitig aber auch etwas schräg nach unten. Entsprechend stehen die Vorderräder 19, 21 in beiden Achsen etwas schräg, was aber aus Gründen der Übersichtlichkeit in der Fig. 4 hinsichtlich der schräge nach oben bzw. unten nicht dargestellt ist. In relation zum Trittbrett 1 stehen also das rechte Vorderrad 21 etwas weiter oben und das linke Vorderrad 19 etwas weiter unten. Befinden sich die beiden Vorderräder 19, 21 auf einer ebenen Fahrbahn, so ist damit das Trittbrett 1 um die Mittellinie M1 so geneigt, daß es mit seiner rechten Kante etwas naher an der Fahrbahn ist, während der Abstand der linken Kante zur Fahrbahn etwas größer ist. Weil sich die Vorderräder 19, 21 bei dieser Lenkkonstruktion etwas schräg stellen, ist es von Vorteil, wenn sie keine walzenförmige Lauffläche besitzen, sondern ebenfalls von jener Bauart sind, wie sie bei Inline Skates Verwendung finden.It is assumed that the ideal load application point on the running board 1 lies to the right of the center line M, as shown in FIG. The ideal load application point denoted by the reference symbol L. By this load attack automatically results in that the right front wheel 21 is more heavily loaded than the left front wheel 19. It also follows that the front wheel 21 exerts a force acting vertically on the right front axle 20 and this in turn on the right knuckle 15. Because at the same time the corresponding opposing forces on the left front wheel 19, decrease on the left front axle 18 and the left steering knuckle 14, follows because of the oblique position of the axes of rotation A 12 , A 13 of the support joints 12, 13 that the stub axles 14, 15 about the axes of rotation A 12 , A 13 of the ball joints 12, 13 are rotated slightly clockwise, that accordingly the tie rod 17 moves with and that the front axles 18,20 and the associated front wheels 19, 21 move accordingly with the stub axles 14,15. Such a position is shown in dotted lines in FIG. 4. Thus, the right front axle 20 is slightly inclined backwards, but at the same time also slightly upwards. On the other hand, the left front axle 18 is slightly inclined forward, but at the same time also slightly downwards. Accordingly, the front wheels 19, 21 are slightly inclined in both axes, but for reasons of clarity in Fig. 4 in terms of obliquely upward or not shown below. In relation to the running board 1 so the right front wheel 21 are slightly higher up and the left front wheel 19 a little further down. Are the two front wheels 19, 21 on a flat roadway, so that the footboard 1 is so inclined about the center line M 1 that it is slightly closer to the road with its right edge, while the distance of the left edge to the roadway slightly larger is. Because the front wheels 19, 21 are slightly inclined in this steering construction, it is advantageous if they have no cylindrical tread, but are also of the type, as used in inline skates use.

Der Benutzer des Fahrgeräts kann die Fahrtrichtung entsprechend allein durch Gewichtsverlagerung steuern. Einer Lenkstange bedarf es nicht. Diese Gewichtsverlagerung kann auf verschiedene Weise erfolgen. Er kann beispielsweise einen seiner Füße seitwärts versetzt auf das Trittbrett 1 aufsetzen, er kann aber auch seinen Körper neigen.The user of the driving device can accordingly control the direction of travel solely by shifting his weight. A handlebar is not needed. This weight shift can be done in several ways. He can, for example, put one of his feet sideways offset on the footboard 1, but he can also tilt his body.

Bei einem solcherart ausgestalteten Fahrgerät kann es vorteilhaft sein, wenn der Geradeaus-Lauf durch besondere Maßnahmen stabilisiert wird. In den Fig. 6 und 7 ist eine dem vorgenannten Fahrwerk weitestgehend entsprechende Ausführungsform schematisch gezeigt. Bei diesem Fahrwerk sind in gleicher Weise Achsschenkel 14, 15 vorhanden, die einerseits um Traggelenke 12, 13 verdrehbar sind und die andererseits mit einer Spurstange 17 verbunden sind, die mit den Achsschenkeln 14, 15 mittels Gelenken 16 verbunden sind. Dies Spurstange 17 ist in der mit einem Pfeil gekennzeichneten Richtung verschiebbar. Bei dieser Fahrwerksvariante ist eine Rückstellvorrichtung vorhanden, die einen am vorderen Ende 11 des Trägers 4 starr befestigten Anschlag 30 ausweist. Auf der Spurstange 17 sind in der Nähe der beiden Enden je ein Halter 31 befestigt. Auf der Spurstange 17 verschiebbar sind zwei Dämpfer 32 angeordnet, wobei der eine Dämpfer 32 auf der einen Seite des Anschlags 30 liegt, während der andere Dämpfer 32 auf der anderen Seite des Anschlags 30 angeordnet ist. Jeder Dämpfer 32 besteht aus einer ersten Lochscheibe 33 und einer zweiten Lochscheibe 34 und einer zwischen den Lochscheiben 33, 34 angeordneten Ring 35. Die Innendurchmesser der Lochscheiben 33, 34 sind größer als der Durchmesser der Spurstange 17, so daß sie gegenüber der Spurstange 17 frei beweglich sind. Dagegen ist der Ring 35 so bemessen, daß sein Innendurchmesser etwas kleiner ist als der Durchmesser der Spurstange 17. Dadurch erzeugt der Ring 35 auf der Spurstange 17 eine gleitende Reibung.In such a designed driving device, it may be advantageous if the straight-ahead is stabilized by special measures. In Figs. 6 and 7 a largely corresponding to the aforementioned chassis embodiment is shown schematically. In this chassis, knuckle 14, 15 are present in the same way, on the one hand to support joints 12, 13 are rotatable and the other hand are connected to a tie rod 17 which are connected to the stub axles 14, 15 by means of joints 16. This tie rod 17 is displaceable in the direction indicated by an arrow. In this chassis variant, a return device is present, which identifies a rigidly attached to the front end 11 of the carrier 4 stop 30. On the tie rod 17 each a holder 31 are attached near the two ends. On the tie rod 17 slidably two dampers 32 are arranged, wherein the one damper 32 is located on one side of the stopper 30, while the other damper 32 is disposed on the other side of the stopper 30. Each damper 32 consists of a first perforated disk 33 and a second perforated disk 34 and a ring 35 arranged between the perforated disks 33, 34. The inner diameters of the perforated disks 33, 34 are larger than the diameter of the tie rod 17, so that they are free relative to the tie rod 17 are mobile. In contrast, the ring 35 is dimensioned so that its inner diameter is slightly smaller than the diameter of the tie rod 17. This produces the ring 35 on the tie rod 17 a sliding friction.

Zwischen den Dämpfern 32 und den Haltern 31 sind Druckfedern 36 angeordnet. Vorteilhaft sind die Druckfedern 36 zwischen Dämpfer 32 und Halter 31 vorgespannt. Dadurch wird erreicht, daß der Anschlag 30 ohne andere Krafteinwirkung in einer dem Geradeaus-Lauf entsprechenden Mittelstellung verbleibt, wie dies in der Fig. 6 dargestellt ist Verlagert der Benutzer des Fahrgeräts auf dem Trittbrett 1 sein Gewicht, so muß zunächst die Vorspannung einer der Druckfedern 36 überwunden werden, ehe es zu einer Auslenkung der Räder kommen kann. In der Fig. 7 ist diese Anordnung bei starker Auslenkung der Räder gezeigt. Die eine der Druckfedern 36 ist hierbei völlig entspannt, während die andere Druckfeder 36 stark zusammengepreßt ist. Durch diese Anordnung wird erreicht, daß die Gewichtsverlagerung des Benutzers gegen eine der Druckfedern 36 erfolgen muß. Dies verbessert, wie Versuche gezeigt haben, die feinfühlige Steuerbarkeit des Fahrgeräts auf besondere Weise.Between the dampers 32 and the holders 31 compression springs 36 are arranged. Advantageously, the compression springs 36 are biased between damper 32 and holder 31. This ensures that the stop 30 remains without any other force acting in a straight line corresponding middle position, as shown in Fig. 6 If the user of the driving device on the footboard 1 shifted its weight, so must first the bias of one of the compression springs 36 are overcome before it can lead to a deflection of the wheels. In Fig. 7, this arrangement is shown with strong deflection of the wheels. One of the compression springs 36 is in this case completely relaxed, while the other compression spring 36 is strongly compressed. By this arrangement it is achieved that the weight shift of the user must take place against one of the compression springs 36. This improves, as experiments have shown, the sensitive controllability of the driving device in a special way.

Ganz besonders vorteilhaft ist es, wenn die von den Dämpfern 32 erzeugte Reibung veränderlich ist. Dies wird in vorteilhafter Weise dadurch erreicht, daß die Spurstange 17 nicht einen über die ganze Länge gleichbleibenden Durchmesser aufweist, sondern daß der Durchmesser der Spurstange 17 in der Mitte am größten ist und gegen die beidseitigen Enden hin abnimmt. Befindet sich das Fahrwerk in der Stellung des Geradeaus-Laufs, wie dies in der Fig. 6 gezeigt ist, so werden die Ringe 35 durch den größeren Durchmesser der Spurstange 17 in ihrem mittleren Bereich stärker aufgeweitet, was eine starke Reibung ergibt. Werden die Räder des Fahrwerks hingegen stärker ausgelenkt, wie dies in der Fig. 7 gezeigt ist, so wird der eine der Ringe 35 des einen Dämpfers 32 durch den Anschlag 30 so weit gegenüber der Spurstange 17 längs verschoben, daß sich dieser Ring 35 an einer Stelle befindet, an der der Durchmesser der Spurstange 17 kleiner ist. Entsprechend kleiner ist dabei die gleitende Reibung. Auch diese Maßnahme dient der Verbesserung der Steuerbarkeit durch den Benutzer.It is particularly advantageous if the friction generated by the dampers 32 is variable. This is advantageously achieved in that the tie rod 17 does not have a constant over the entire length diameter, but that the diameter of the tie rod 17 is largest in the middle and decreases towards the two-sided ends. If the landing gear is in the straight-ahead position, as shown in FIG. 6, the rings 35 are widened more strongly in their middle region due to the larger diameter of the tie rod 17, which results in a high degree of friction. If the wheels of the chassis, however, deflected stronger, as shown in Fig. 7, the one of the rings 35 of a damper 32 so far moved by the stopper 30 against the tie rod 17 that this ring 35 at a Location is located at which the diameter of the tie rod 17 is smaller. Correspondingly smaller is the sliding friction. This measure also serves to improve controllability by the user.

Der Ring 35 besteht vorteilhaft aus einem gummielastischen Werkstoff. Die Lochscheiben 33, 34 bestehen vorteilhaft aus Kunststoff, was den Vorteil hat, daß beim Anschlagen der Dämpfer 32 am Anschlag 30 keine störenden Geräusche entstehen.The ring 35 is advantageously made of a rubber-elastic material. The perforated discs 33, 34 are advantageously made of plastic, which has the advantage that when striking the damper 32 at the stop 30 no disturbing noises.

Vorteilhaft ist es, wenn die durch die gleitende Reibung erzeugbare Dämpfung veränderbar ist. Dies kann in besonders einfacher Weise durch eine in der Fig. 8 gezeigte Ausgestaltung erreicht werden. Die Fig. 8 zeigt einen Schnitt durch einen auf der Spurstange 17 verschiebbaren Dämpfer 32. Der Schnitt liegt dabei im Ring 35. Um den Ring 35 ist eine Bride 38 gelegt. Diese Bride 38 weist in bekannter Weise eine Stellschraube 39 auf, mit der die Bride 38 mehr oder weniger stark angezogen werden kann. Ist die Bride 38 nur wenig angezogen, wird der Ring 35 nur wenig gepreßt. Entsprechend ist seine Reibung auf der Spurstange 17 kleiner. Wird die Bride 38 stärker angezogen, nimmt die Pressung des Rings 35 zu, so daß die Reibung erhöht wird. Dadurch wird vorteilhaft erreicht, daß bei größerer Geschwindigkeit und bei unebener Fahrbahn der Geradeaus-Lauf stärker stabilisiert ist.It is advantageous if the damping that can be generated by the sliding friction can be changed. This can be achieved in a particularly simple manner by an embodiment shown in FIG. 8. Fig. 8 shows a section through a slidable on the tie rod damper 32. The cut is in the ring 35. To the ring 35, a Bride 38 is placed. This Bride 38 has in a known manner an adjusting screw 39, with the Bride 38 can be more or less tightened. If the Bride 38 attracted only a little, the ring 35 is pressed only slightly. Accordingly, its friction on the tie rod 17 is smaller. When the strap 38 is tightened more, the pressure of the ring 35 increases, so that the friction is increased. This advantageously ensures that at higher speeds and uneven road the straight-ahead is more stabilized.

Die vorgenannte Lösung mit der Bride 38 ist nur als eine mögliche Ausführungsform zu verstehen. Andere gleichwirkende Lösungen, beispielsweise in der Art einer in ihrer Vorspannung variablen Stopfbüchse, sind dieser Ausführungsform äquivalent.The aforementioned solution with the bridge 38 is only to be understood as a possible embodiment. Other equally effective solutions, for example in the Type of a variable in their bias stuffing box, are equivalent to this embodiment.

Im Rahmen der Erfindung sind mit Trittbrettern 1 verschiedener Ausführungsformen verschiedene Laufwerke 2, 3 kombinierbar. Damit kann das Fahrgerät je nach verwendetem Trittbrett 1 und Laufwerken 2, 3 ganz unterschiedliche Fahreigenschaften erhalten.In the context of the invention, different drives 2, 3 can be combined with running boards 1 of different embodiments. Thus, the driving device depending on the used footboard 1 and drives 2, 3 get very different driving characteristics.

Claims (7)

  1. A scooter comprising two running gears (2,3), each of which has at least one wheel (5, 6) and at least one of which is implemented such that it is steerable, and further comprising a footboard (1) connecting the two running gears, wherein
    • the front and the rear running gears (2, 3) each include an area which overlaps the front footboard area and the rear footboard area, respectively, such that the footboard engages into a corresponding slot of the running gears, and the footboard is secured to the running gears with the aid of releasable fastening means, such as screws, so that a releasable connection is established which permits the footboard to be exchanged,
    • the at least one wheel of the front running gear (2) and the at least one wheel of the rear running gear (3) are respectively arranged in front of and behind the footboard and consequently not below the surface defined by the footboard,
    • the footboard (1) is elastically deformable and acts as a shock absorber,
    • the footboard is convex in shape so that, when no load is applied thereto, the distance between the middle of said footboard and the track will be larger than the distance between the ends of said footboard and the track where the footboard is connected to the running gears (2, 3),
    wherein the footboard has a spring rate of 0.03 to 0.25 mm/kg.
  2. A scooter according to claim 1,
    characterized in that,
    when a load is applied to the middle of the footboard, a spring deflection of 0.1 mm/kg will take place.
  3. A scooter according to one of the preceding claims,
    characterized in that
    the footboard (1) consists of multi-layered glued wood.
  4. A scooter according to one of the preceding claims,
    characterized in that
    reinforcement struts are adapted to be inserted into the footboard (1).
  5. A scooter according to one of the preceding claims,
    characterized in that
    the front running gear carries two parallel wheels.
  6. A scooter according to one of the preceding claims,
    characterized in that
    the rear running gear is provided with a fork (8) in which an axle (9), about which an individual wheel (6) rotates, is secured in position.
  7. A scooter according to one of the preceding claims,
    characterized in that,
    on the level on which the footboard (1) is secured to the running gear by means of screws, the width of the footboard (1) substantially corresponds to the width of the contact surface of the running gear.
EP99948643A 1998-11-11 1999-10-26 Travel device such as a skateboard or a scooter and similar Expired - Lifetime EP1096980B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH02257/98A CH692973A5 (en) 1998-11-11 1998-11-11 Driving device, in particular a roller board or scooter
CH225798 1998-11-11
PCT/CH1999/000506 WO2000027489A1 (en) 1998-11-11 1999-10-26 Travel device such as a skateboard or a scooter and similar

Publications (3)

Publication Number Publication Date
EP1096980A1 EP1096980A1 (en) 2001-05-09
EP1096980B1 EP1096980B1 (en) 2002-01-23
EP1096980B2 true EP1096980B2 (en) 2007-11-14

Family

ID=4229554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99948643A Expired - Lifetime EP1096980B2 (en) 1998-11-11 1999-10-26 Travel device such as a skateboard or a scooter and similar

Country Status (8)

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EP (1) EP1096980B2 (en)
JP (1) JP2002529167A (en)
AT (1) ATE212244T1 (en)
AU (1) AU6185699A (en)
CA (1) CA2350437A1 (en)
CH (1) CH692973A5 (en)
DE (4) DE29923694U1 (en)
WO (1) WO2000027489A1 (en)

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AU2000261757A1 (en) * 2000-07-31 2002-02-13 Markus Burgi Steering device on a vehicle to be driven by the human muscular power of a user
FR2823987B1 (en) * 2001-04-27 2003-07-11 Patrick Pierron CHASSIS WITH CONTROLLED DEFORMATION FOR A SLIDING MACHINE, PARTICULARLY FOR A SKATEBOARD
US6910698B2 (en) * 2002-02-26 2005-06-28 Strategic Focus International, Inc. Skateboards
WO2005014128A1 (en) 2003-08-07 2005-02-17 Yamaha Motor Co., Ltd. Vehicle
CN101585390B (en) * 2009-06-17 2011-12-28 冯世英 Body-building scooter
KR102055744B1 (en) * 2018-11-29 2019-12-13 김항래 Drifting electric board
NL2031139B1 (en) * 2022-03-02 2023-09-08 Worldwide Trading Services Int Bvba Personal transportation vehicle, such as a scooter

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US2891225A (en) 1957-10-08 1959-06-16 Edwin S Lewis Waveguide to coaxial transmission line transition
US4029330A (en) 1976-05-05 1977-06-14 Runyan Jr Paul S Cambered skateboard provided with longitudinally adjustable truck assemblies
US4799702A (en) 1988-05-11 1989-01-24 Tarrassa Wang Scooter with turnable rear wheel
GB2225990A (en) 1988-10-31 1990-06-20 Thomas Arthur Allen Vehicle with combined tilting and steering
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WO1997004844A1 (en) 1995-07-27 1997-02-13 Flynn Raymond G Mountain board
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WO1999034461A1 (en) 1997-12-31 1999-07-08 Duracell Inc. Electrochemical cell balance

Also Published As

Publication number Publication date
CA2350437A1 (en) 2000-05-18
DE29923694U1 (en) 2001-01-18
AU6185699A (en) 2000-05-29
EP1096980B1 (en) 2002-01-23
JP2002529167A (en) 2002-09-10
WO2000027489A1 (en) 2000-05-18
DE59900781D1 (en) 2002-03-14
EP1096980A1 (en) 2001-05-09
DE19982298D2 (en) 2001-04-12
DE19982298C1 (en) 2001-09-13
CH692973A5 (en) 2003-01-15
ATE212244T1 (en) 2002-02-15

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