EP0340260B1 - Roller skates comprising at least two rollers aligned along a medial plane - Google Patents

Roller skates comprising at least two rollers aligned along a medial plane Download PDF

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Publication number
EP0340260B1
EP0340260B1 EP88908654A EP88908654A EP0340260B1 EP 0340260 B1 EP0340260 B1 EP 0340260B1 EP 88908654 A EP88908654 A EP 88908654A EP 88908654 A EP88908654 A EP 88908654A EP 0340260 B1 EP0340260 B1 EP 0340260B1
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EP
European Patent Office
Prior art keywords
roller
frame
under
rollers
plate
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Expired - Lifetime
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EP88908654A
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German (de)
French (fr)
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EP0340260A1 (en
Inventor
José MURGA
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MURGA, JOSE
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Individual
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Priority to AT88908654T priority Critical patent/ATE83941T1/en
Publication of EP0340260A1 publication Critical patent/EP0340260A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/22—Wheels for roller skates
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/02—Roller skates; Skate-boards with wheels arranged in two pairs
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/06—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/14—Roller skates; Skate-boards with brakes, e.g. toe stoppers, freewheel roller clutches
    • A63C17/1409—Roller skates; Skate-boards with brakes, e.g. toe stoppers, freewheel roller clutches contacting one or more of the wheels

Definitions

  • the present invention relates to a roller skate comprising a chassis, at least two rollers mounted on a lower part of this chassis and aligned one behind the other in a common median plane perpendicular to their axes of rotation, and holding means to fix the frame to a foot and to the corresponding leg of a user.
  • US-A-4,418,929 also shows a shoe of the same kind, but provided with two narrow rollers mounted between two vertical plates of the chassis. This structure must also be heavy enough to have the desired rigidity, in particular from the point of view of transverse deformations, and the axes of the rollers are also prominent laterally.
  • Patent CH-A-580 976 relates to a skate with four rollers which are supported two by two by T-shaped supports fixed to the sole of the shoe.
  • the center plate of the T-piece is in the median plane and carries a trunnion on each side, to support a pair of casters which have a transverse profile at an angle, with a larger diameter near the central plate than towards the outside.
  • the two wheels of a pair being close to each other and separated only by the central plate and the necessary clearances, they have roughly the same behavior as a single large central wheel, but their lateral dimensions and the the weight of their support remains important, since a lateral pin and a bearing are required for each caster.
  • the object of the present invention is to provide a skate provided with rollers situated in the median plane and arranged so as to avoid the drawbacks mentioned above, in order to allow great freedom of evolution thanks to its lightness, its stability and the absence of projecting lateral elements.
  • each of the rollers comprises two circular cheeks, substantially parallel and of the same external diameter, and a tubular element of smaller external diameter which is integral with the two cheeks, and in that said tubular element is mounted inside a rolling bearing located in the median plane and mounted in an opening of a central plate which supports it, said central plate belonging to said lower part of the chassis and being located in the median plane.
  • each wheel has the general shape of a very narrow coil which can rest on the ground by its two cheeks when it is perpendicular to the ground, or by only one when it is inclined.
  • this coil can be supported by a bearing only in the vicinity of its median plane, which avoids any protruding mount at the ends of the coil, that is to say on the sides of the pad.
  • the bearing can have a narrow and high shape, the large diameter of which ensures good lateral stability of the wheel and allows a fairly large central vacuum, since a support axis is no longer necessary in the center of the wheel.
  • each caster can be hollowed out by a central hole axially traversing the whole caster, this hole containing no mechanical element.
  • said lower part of the chassis comprises a common central plate situated in the median plane and in which the bearings of the two rollers are mounted, this plate being integral with a support plate extending under the foot of the user. .
  • each rolling bearing may comprise an outer ring provided externally with a radial flange mounted with a radial clearance in a groove of the central plate, an elastic material being interposed between this flange and the bottom of the groove to absorb the shocks.
  • the rolling bearing can be a ball bearing, the inner ring of which is formed by the tubular element of the caster.
  • the outer edge of each cheek of the rollers can be covered with an elastomer bandage.
  • a device for braking the rollers is mounted on the central plate of the chassis and comprises braking members slidably mounted along this plate to come into contact with the rollers, and a central control mechanism.
  • a braking member may include at least one frame sliding comprising a wheel pressed against the central plate of the chassis and arranged to roll on the edge of a cheek of the corresponding wheel.
  • at least one of the rollers can be equipped with a rotation mechanism in one direction to avoid rotation backwards.
  • the holding means comprise a collar arranged to be fixed around the user's leg and connected to the chassis by a rigid mechanism transversely, but articulated with respect to a transverse axis at the ankle of the user.
  • Fig. 1 shows a roller skate according to the invention, fixed to a leg 1 and to the corresponding foot or to the shoe 2 of a user.
  • the skate comprises a rigid frame 3 supporting the sole of the shoe 2 and equipped, in its lower part, with a front caster 4, a rear caster 5, a front stopper 6 and a rear stopper 7.
  • the chassis 3 is attached to the shoe 2 using a conventional adjustable strap 8.
  • the skate has a leg support 10 comprising a collar 11 intended to be attached around the user's leg 1 and connected to the chassis 3, on each side of the ankle 12 of the user, by a pair of rigid metal blades 13 and 14 hinged together at 15 at the ankle 12 to allow the collar 11 to tilt with the leg 1 towards forward or backward by pivoting w y relative to a transverse axis Y , as shown in fig. 3.
  • a relative lateral tilting of the chassis 3 relative to the leg 1, by a rotation w z around the longitudinal axis Z is prevented by the rigidity of the support 10.
  • the leg 1 can still perform a certain pivoting w x around its longitudinal axis X inside the collar 11, so that the skater can direct the axis Z of his foot as he wishes.
  • the transverse rigidity of the leg support 10 considerably relieves the efforts to be made by the skater at the ankle. It also has the effect of keeping the common median plane of the two rollers 4 and 5 practically in coincidence with the longitudinal axis X of the leg 1 and tilt it laterally with the leg relative to the ground 19, as shown in fig. 2.
  • the angle A between the extreme positions 1 ′ and 1 ⁇ of inclination of the leg is very large thanks to the narrowness of the rollers and the absence of projecting lateral elements at the level of the rollers.
  • Fig. 4 shows in perspective the schematic form of a hollowed-out reel of the rollers 4 and 5, with two cheeks 20 which are parallel and symmetrical with respect to the median plane and which are rigidly connected by a central tubular element 21 whose outside diameter is less than theirs.
  • the wheel preferably, but not necessarily, has a central hole 22 which makes it possible to lighten it.
  • Figs. 5 and 6 show more particularly the shape of the chassis 3, formed essentially by a horizontal plate 23 supporting the sole of the shoe and a vertical plate 24 pierced with two large circular orifices 25 and 26 for mounting the tubular elements 21 of the rollers 4 and 5, the cheeks 20 of each roller being located respectively on either side of this plate 24.
  • the plate 24 is pierced with holes 27 and 28 for fixing the front buffers 6 and rear 7 with screws, and holes 29 and 30 for mounting a braking device which will be described later.
  • Fig. 7 shows in more detail an advantageous embodiment of a caster 4, 5 and its mounting in the plate 24 of the chassis.
  • the tubular element 21 and the cheeks 20 of the caster are made of a single rigid piece, preferably metallic, the periphery of the cheeks being lined with a bandage 32 made of relatively hard elastomer which has a quarter-circle profile.
  • a bandage 32 made of relatively hard elastomer which has a quarter-circle profile.
  • an enlarged space 33 is formed between the two cheeks 20 and contains a ball bearing 34 comprising an outer ring 35, the element tubular 21 serving directly as the inner ring of the bearing.
  • the ring 35 has on the outside a flat rim 35a which is fitted into a rectangular profile groove, formed in the thickness of the plate 24 and containing a relatively elastomer soft 36 which absorbs the shocks undergone by the caster, the ring 35 then sliding radially in the groove.
  • the plate 24 must obviously have a removable part 24a around the lower half of each bearing 34, to allow the mounting of the rollers.
  • rollers in the form of coils advantageously allow the mounting of a rotation mechanism in one direction (not shown) disposed between the internal surface of a cheek 20 and a lateral surface of the plate 24 or of the ring 35
  • a rotation mechanism in one direction (not shown) disposed between the internal surface of a cheek 20 and a lateral surface of the plate 24 or of the ring 35
  • It may for example be a metal washer with oblique fins cooperating with fine radial grooves formed in said surfaces, or a ball bearing of the "freewheel” type, which locks automatically as soon as it starts a backward rotation.
  • the caster can only turn forward and allows the skater to propel himself easily, especially when climbing.
  • Figs. 9 to 11 illustrate an adjustable braking device 40 which is mounted on the plate 24 of the chassis between the two rollers 4 and 5.
  • the braking device comprises a sliding frame 41 comprising a pair of metal plates 42 each provided with 'a head 43 and connected to each other by two pins 44 and 45 which can slide in the oblong holes 29 (fig. 6) of the frame.
  • Each axis 44 and 45 carries a pair of braking wheels 46 and 47 of compressible material, which are arranged on either side of the plate 24 and which are pressed against it, for example by means of elastic washers, in order to ensure friction braking against this plate.
  • the heads 43 two sliding frames are applied against a central cam 48 whose rotation is controlled by a rack 49 which slides longitudinally in a groove of the chassis under the effect of a rear pusher 50 (fig. 1) and a return spring . Furthermore, the rack 49 is held in position by a ratchet mechanism (not shown) which can be released by lifting the pusher 50.
  • the cam 48 comprises, on each side of the chassis, cam surfaces 51 and 52 which are separate for the front and rear braking mechanisms, but which are similar and angularly offset from one another to simultaneously produce the same braking effect in the two mechanisms.
  • FIG. 11 shows the profile of one of the peripheral surfaces 51 of the cam 48, this cam being rotatable about its axis 53.
  • the head 43 of the sliding frame 41 is pressed against the surface 51 simply by the inherent elasticity of the material constituting the braking wheels 46 and 47.
  • Different positions of the support of the head 43 against the surface 51 during the rotation of the cam are marked by a graduation going from 0 to 4.
  • the frame 41 In position 0, the frame 41 is sufficiently moved back relative to the corresponding caster 4, 5 so that the wheel 46 does not touch the tire 32 and the caster is therefore not braked.
  • the wheel 46 bears lightly against the tire 32 and it slides over it, because its friction against the plate 24 is strong enough to prevent it from turning at this stage.
  • This device makes it possible to solve in a simple way the problem of the metered and simultaneous braking of all the rollers of a skate to allow the skater to safely travel relatively steep descents.
  • the skater can increase the braking force of one skate at any time by hitting the control pusher 50 by means of the front stopper 6 of the other skate. Unlocking can be carried out by lifting the pusher 50 by means of the same stopper or manually.
  • Fig. 12 more particularly illustrates the use of the front bumpers 6 and rear 7.
  • the skater can use the front bumper 6 to propel himself. He then inclines his foot forward, at an angle greater than the angle B which is equal to 41 ° in the present example, and he presses the stopper 6 against the ground 19 to propel himself forward.
  • the stopper 7 acts as a friction brake against the ground.
  • the skater tilts his foot backwards, by an angle greater than the angle C which is preferably here 29 °.
  • the sum of the angles B + C that is to say 70 °, is high enough to allow the skater a great freedom to tilt his foot forward or backward without the stops touching the ground while he is skating.
  • the present invention is not limited to the embodiment described above.
  • any suitable material may be used for the construction of the various elements, for example steel, light metal or a rigid synthetic material for the chassis and for the rollers in the form of a coil.
  • the articulated leg support 10 can also be the subject of multiple variants from the point of view of construction, padding and fixing devices to the leg, in particular as shown by the publications cited above. may include a half-shell applying over a certain height along the leg, or even be replaced by a complete shoe articulated or flexible longitudinally, to which the chassis is fixed 3.
  • the publications DE-A-2 745 040 and CH-A-580′976 show different ways of attaching a skate frame formed mainly to the sole of a shoe by a central longitudinal plate.
  • the skates according to the invention have the advantage of a central chassis which can be very rigid while being simple and light.
  • the central plate of the chassis simultaneously carries the two wheels, the buffers and, if necessary, the braking device.
  • this simple construction allows for a skate that is lighter and less expensive than conventional skates.
  • the reel-shaped casters are light and have an aesthetic appearance, and moreover they are mounted in large-diameter bearings which are space-saving while being very resistant to shocks thanks to the large number of beads they can hold.
  • the ground support points are always very close to this median plane.
  • the skates according to the invention allow a skater the same developments as those of an ice skater.
  • the user wearing these skates can also move easily in the street or in a building, on longitudinal or transverse slopes and on stairs.
  • the invention applies as well to skates designed to evolve on a track or for figure skating, as to skates intended for movement on the street or in buildings.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

The skate includes an under-frame (3) equipped with two or several rollers aligned one behind the other in a common median plane. Each roller (4, 5) has a shape of a narrow-bobbin, with two circular flanges provided with bands and a central hollowed hub, fixed inside a ball-bearing. This bearing is put in an orifice of a central plate (24) of the under-frame, this plate holding also a front buffer-stop (6) and a back buffer-stop (7). An instrument absorbing the shocks in the radial direction is intercalated between the bearing and the plate (24). Preferably, the under-frame (3) of the skate is equipped with a support for a leg (1) which is articulated in relation to a transverse axis (Y) at the level of the ankle. A braking mechanism of the rollers (4, 5) can be fixed on the central plate (24) of the under-frame. Thanks to the special shape of the rollers, bearings and the under-frame are lightened.

Description

La présente invention concerne un patin à roulettes comportant un châssis, au moins deux roulettes montées sur une partie inférieure de ce châssis et alignées l'une derrière l'autre dans un plan médian commun perpendiculaire à leurs axes de rotation, et des moyens de maintien pour fixer le châssis à un pied et à la jambe correspondante d'un utilisateur.The present invention relates to a roller skate comprising a chassis, at least two rollers mounted on a lower part of this chassis and aligned one behind the other in a common median plane perpendicular to their axes of rotation, and holding means to fix the frame to a foot and to the corresponding leg of a user.

Le certificat d'utilité FR-A-2 312 174 et le brevet correspondant US-A-4 072 317 décrivent un patin de ce genre, comportant deux roulettes alignées relativement larges. Chaque roulette est montée sous le châssis entre deux bras parallèles portant les extrémités de son axe. Pour avoir la rigidité voulue, ce montage connu nécessite au moins quatre bras très rigides, ainsi que des axes de roulettes qui sont relativement gros et assez longs pour porter chaque roulette par deux roulements parallèles. Cette construction présente ainsi un poids assez important. De plus les bras constituent, de chaque côté des roulettes, des éléments saillants qui peuvent heurter le sol ou divers obstacles quand on patine, ce qui est une source de dangers et de dégâts.The utility certificate FR-A-2,312,174 and the corresponding patent US-A-4,072,317 describe a shoe of this kind, comprising two relatively wide aligned rollers. Each caster is mounted under the chassis between two parallel arms carrying the ends of its axis. To have the desired rigidity, this known assembly requires at least four very rigid arms, as well as roller axles which are relatively large and long enough to carry each caster by two parallel bearings. This construction thus has a fairly significant weight. In addition, the arms constitute, on each side of the casters, projecting elements which can strike the ground or various obstacles when skating, which is a source of danger and damage.

Le brevet US-A-4 418 929 montre aussi un patin du même genre, mais pourvu de deux roulettes étroites montées entre deux plaques verticales du châssis. Cette structure doit également être assez lourde pour présenter la rigidité voulue, notamment au point de vue des déformations transversales, et les axes des roulettes sont aussi proéminents latéralement.US-A-4,418,929 also shows a shoe of the same kind, but provided with two narrow rollers mounted between two vertical plates of the chassis. This structure must also be heavy enough to have the desired rigidity, in particular from the point of view of transverse deformations, and the axes of the rollers are also prominent laterally.

Le brevet CH-A-580 976 se rapporte à un patin à quatre roulettes qui sont supportées deux à deux par des supports en T fixés à la semelle de la chaussure. La plaque centrale de la pièce en T se trouve dans le plan médian et porte un tourillon de chaque côté, pour supporter une paire de roulettes qui ont un profil transversal en biais, avec un plus grand diamètre près de la plaque centrale que vers l'extérieur. Les deux roulettes d'une paire étant proches l'une de l'autre et séparées seulement par la plaque centrale et les jeux nécessaires, elles ont à peu près le même comportement qu'une seule roulette centrale large, mais leur encombrement latéral et le poids de leur support restent importants, puisqu'il faut un tourillon latéral et un roulement pour chaque roulette.Patent CH-A-580 976 relates to a skate with four rollers which are supported two by two by T-shaped supports fixed to the sole of the shoe. The center plate of the T-piece is in the median plane and carries a trunnion on each side, to support a pair of casters which have a transverse profile at an angle, with a larger diameter near the central plate than towards the outside. The two wheels of a pair being close to each other and separated only by the central plate and the necessary clearances, they have roughly the same behavior as a single large central wheel, but their lateral dimensions and the the weight of their support remains important, since a lateral pin and a bearing are required for each caster.

La présente invention a pour but de fournir un patin pourvu de roulettes situées dans le plan médian et agencé de manière à éviter les inconvénients mentionnés ci-dessus, afin de permettre une grande liberté d'évolutions grâce à sa légèreté, à sa stabilité et à l'absence d'éléments latéraux saillants.The object of the present invention is to provide a skate provided with rollers situated in the median plane and arranged so as to avoid the drawbacks mentioned above, in order to allow great freedom of evolution thanks to its lightness, its stability and the absence of projecting lateral elements.

Dans ce but, le patin à roulettes selon l'invention est caractérisé en ce que chacune des roulettes comporte deux joues circulaires, sensiblement parallèles et de même diamètre extérieur, et un élément tubulaire de moindre diamètre extérieur qui est solidaire des deux joues, et en ce que ledit élément tubulaire est monté à l'intérieur d'un palier de roulement situé dans le plan médian et monté dans une ouverture d'une plaque centrale qui le supporte, ladite plaque centrale appartenant à ladite partie inférieure du châssis et étant située dans le plan médian.For this purpose, the roller skate according to the invention is characterized in that each of the rollers comprises two circular cheeks, substantially parallel and of the same external diameter, and a tubular element of smaller external diameter which is integral with the two cheeks, and in that said tubular element is mounted inside a rolling bearing located in the median plane and mounted in an opening of a central plate which supports it, said central plate belonging to said lower part of the chassis and being located in the median plane.

De cette manière, chaque roue a la forme générale d'une bobine très étroite qui peut reposer sur le sol par ses deux joues quand elle est perpendiculaire au sol, ou par une seule quand elle est inclinée. De plus, cette bobine peut être supportée par un roulement uniquement au voisinage de son plan médian, ce qui permet d'éviter toute monture saillante aux extrémités de la bobine, c'est-à-dire sur les côtés du patin . Le roulement peut avoir une forme étroite et haute, dont le grand diamètre assure une bonne stabilité latérale de la roue et permet un vide central assez grand, puisqu'un axe de support n'est plus nécessaire au centre de la roue. Pour être allégée, chaque roulette peut être évidée par un trou central traversant axialement toute la roulette, ce trou ne contenant aucun élément mécanique.In this way, each wheel has the general shape of a very narrow coil which can rest on the ground by its two cheeks when it is perpendicular to the ground, or by only one when it is inclined. In addition, this coil can be supported by a bearing only in the vicinity of its median plane, which avoids any protruding mount at the ends of the coil, that is to say on the sides of the pad. The bearing can have a narrow and high shape, the large diameter of which ensures good lateral stability of the wheel and allows a fairly large central vacuum, since a support axis is no longer necessary in the center of the wheel. To be lightened, each caster can be hollowed out by a central hole axially traversing the whole caster, this hole containing no mechanical element.

De préférence, ladite partie inférieure du châssis comporte une plaque centrale commune située dans le plan médian et dans laquelle sont montés les paliers des deux roulettes, cette plaque étant solidaire d'une plaque d'appui s'étendant sous le pied de l'utilisateur.Preferably, said lower part of the chassis comprises a common central plate situated in the median plane and in which the bearings of the two rollers are mounted, this plate being integral with a support plate extending under the foot of the user. .

Dans une forme de réalisation particulière, un élément élastique est interposé entre chaque palier de roulement et la plaque centrale. A cet effet, chaque palier de roulement peut comporter une bague extérieure pourvue extérieurement d'un rebord radial monté avec un jeu radial dans une rainure de la plaque centrale, une matière élastique étant intercalée entre ce rebord et le fond de la rainure pour absorber les chocs. Le palier de roulement peut être un palier à billes dont la bague intérieure est constituée par l'élément tubulaire de la roulette. D'autre part, le bord extérieur de chaque joue des roulettes peut être garni d'un bandage en élastomère.In a particular embodiment, an elastic element is interposed between each rolling bearing and the central plate. For this purpose, each rolling bearing may comprise an outer ring provided externally with a radial flange mounted with a radial clearance in a groove of the central plate, an elastic material being interposed between this flange and the bottom of the groove to absorb the shocks. The rolling bearing can be a ball bearing, the inner ring of which is formed by the tubular element of the caster. On the other hand, the outer edge of each cheek of the rollers can be covered with an elastomer bandage.

Dans une réalisation particulière, un dispositif de freinage des roulettes est monté sur la plaque centrale du châssis et comporte des organes de freinage montés de manière coulissante le long de cette plaque pour entrer en contact avec les roulettes, et un mécanisme central de commande. Un tel organe de freinage peut comporter au moins un bâti coulissant comportant une roue pressée contre la plaque centrale du châssis et agencée pour rouler sur le bord d'une joue de la roulette correspondante. D'autre part, au moins l'une des roulettes peut être équipée d'un mécanisme de rotation dans un seul sens pour éviter une rotation en arrière.In a particular embodiment, a device for braking the rollers is mounted on the central plate of the chassis and comprises braking members slidably mounted along this plate to come into contact with the rollers, and a central control mechanism. Such a braking member may include at least one frame sliding comprising a wheel pressed against the central plate of the chassis and arranged to roll on the edge of a cheek of the corresponding wheel. On the other hand, at least one of the rollers can be equipped with a rotation mechanism in one direction to avoid rotation backwards.

Dans une forme de réalisation avantageuse, les moyens de maintien comportent un collier agencé pour être fixé autour de la jambe de l'utilisateur et relié au châssis par un mécanisme rigide transversalement, mais articulé par rapport à un axe transversal au niveau de la cheville de l'utilisateur.In an advantageous embodiment, the holding means comprise a collar arranged to be fixed around the user's leg and connected to the chassis by a rigid mechanism transversely, but articulated with respect to a transverse axis at the ankle of the user.

La présente invention sera mieux comprise à l'aide de la description suivante d'un exemple de réalisation, en référence aux dessins annexés, dans lesquels :

  • la fig. 1 est une vue schématique en perspective d'un patin à roulettes selon l'invention, fixé au pied et à la jambe d'un utilisateur,
  • la fig. 2 est une vue frontale montrant les possibilités d'inclinaison latérale du patin et de la jambe,
  • la fig. 3 est une vue latérale montrant les possibilités d'inclinaison longitudinale de la jambe quand les deux roulettes du patin s'appuient sur le sol,
  • la fig. 4 est une vue schématique en perspective d'une roulette en forme de bobine,
  • la fig. 5 est une vue en coupe transversale montrant le profil du châssis du patin,
  • la fig. 6 est une vue latérale de ce châssis,
  • la fig. 7 est une vue en coupe transversale d'une forme de réalisation préférée d'une roulette et de sa monture,
  • la fig. 8 illustre en coupe transversale partielle une autre forme de réalisation d'une roulette,
  • les fig. 9 et 10 représentent respectivement en vue latérale et en plan un dispositif de freinage des roulettes,
  • la fig. 11 représente une came de commande du dispositif de freinage, et
  • la fig. 12 est une vue latérale montrant la disposition de deux butoirs sur le châssis du patin.
The present invention will be better understood with the aid of the following description of an exemplary embodiment, with reference to the appended drawings, in which:
  • fig. 1 is a schematic perspective view of a roller skate according to the invention, fixed to the foot and to the leg of a user,
  • fig. 2 is a front view showing the possibilities of lateral inclination of the skate and the leg,
  • fig. 3 is a side view showing the possibilities of longitudinal inclination of the leg when the two skate wheels are resting on the ground,
  • fig. 4 is a schematic perspective view of a reel-shaped caster,
  • fig. 5 is a cross-sectional view showing the profile of the skate frame,
  • fig. 6 is a side view of this chassis,
  • fig. 7 is a cross-sectional view of a preferred embodiment of a caster and its frame,
  • fig. 8 illustrates in partial cross-section another embodiment of a caster,
  • fig. 9 and 10 represent respectively in side view and in plan a device for braking the rollers,
  • fig. 11 represents a control cam for the braking device, and
  • fig. 12 is a side view showing the arrangement of two buffers on the skate frame.

La fig. 1 montre un patin à roulettes selon l'invention, fixé à une jambe 1 et au pied correspondant ou à la chaussure 2 d'un utilisateur. Le patin comporte un châssis rigide 3 supportant la semelle de la chaussure 2 et équipé, dans sa partie inférieure, d'une roulette avant 4, d'une roulette arrière 5, d'un butoir avant 6 et d'un butoir arrière 7. Le châssis 3 est attaché à la chaussure 2 à l'aide d'une bride réglable classique 8. Par ailleurs, le patin comporte un support de jambe 10 comprenant un collier 11 destiné à être attaché autour de la jambe 1 de l'utilisateur et relié au châssis 3, de chaque côté de la cheville 12 de l'utilisateur, par une paire de lames métalliques rigides 13 et 14 articulées entre elles en 15 au niveau de la cheville 12 pour permettre au collier 11 de basculer avec la jambe 1 vers l'avant ou vers l'arrière en effectuant un pivotement w y par rapport à un axe transversal Y, comme le montre la fig. 3. En revanche, un basculement latéral relatif du châssis 3 par rapport à la jambe 1, par une rotation w z autour de l'axe longitudinal Z, est empêché par la rigidité du support 10. Cependant, la jambe 1 peut tout de même effectuer un certain pivotement w x autour de son axe longitudinal X à l'intérieur du collier 11, si bien que le patineur peut diriger l'axe Z de son pied comme il le désire.Fig. 1 shows a roller skate according to the invention, fixed to a leg 1 and to the corresponding foot or to the shoe 2 of a user. The skate comprises a rigid frame 3 supporting the sole of the shoe 2 and equipped, in its lower part, with a front caster 4, a rear caster 5, a front stopper 6 and a rear stopper 7. The chassis 3 is attached to the shoe 2 using a conventional adjustable strap 8. Furthermore, the skate has a leg support 10 comprising a collar 11 intended to be attached around the user's leg 1 and connected to the chassis 3, on each side of the ankle 12 of the user, by a pair of rigid metal blades 13 and 14 hinged together at 15 at the ankle 12 to allow the collar 11 to tilt with the leg 1 towards forward or backward by pivoting w y relative to a transverse axis Y , as shown in fig. 3. On the other hand, a relative lateral tilting of the chassis 3 relative to the leg 1, by a rotation w z around the longitudinal axis Z , is prevented by the rigidity of the support 10. However, the leg 1 can still perform a certain pivoting w x around its longitudinal axis X inside the collar 11, so that the skater can direct the axis Z of his foot as he wishes.

La rigidité transversale du support de jambe 10 soulage considérablement les efforts à fournir par le patineur au niveau de la cheville. Elle a aussi pour effet de maintenir le plan médian commun des deux roulettes 4 et 5 pratiquement en coïncidence avec l'axe longitudinal X de la jambe 1 et de l'incliner latéralement avec la jambe par rapport au sol 19, comme le montre la fig. 2. L'angle A entre les positions extrêmes 1′ et 1˝ d'inclinaison de la jambe est très grand grâce à l'étroitesse des roulettes et à l'absence d'éléments latéraux saillants au niveau des roulettes.The transverse rigidity of the leg support 10 considerably relieves the efforts to be made by the skater at the ankle. It also has the effect of keeping the common median plane of the two rollers 4 and 5 practically in coincidence with the longitudinal axis X of the leg 1 and tilt it laterally with the leg relative to the ground 19, as shown in fig. 2. The angle A between the extreme positions 1 ′ and 1 ˝ of inclination of the leg is very large thanks to the narrowness of the rollers and the absence of projecting lateral elements at the level of the rollers.

La fig. 4 montre en perspective la forme schématique en bobine évidée des roulettes 4 et 5, avec deux joues 20 qui sont parallèles et symétriques par rapport au plan médian et qui sont reliées rigidement par un élément tubulaire central 21 dont le diamètre extérieur est inférieur au leur. La roulette comporte de préférence, mais pas nécessairement, un trou central 22 qui permet de l'alléger.Fig. 4 shows in perspective the schematic form of a hollowed-out reel of the rollers 4 and 5, with two cheeks 20 which are parallel and symmetrical with respect to the median plane and which are rigidly connected by a central tubular element 21 whose outside diameter is less than theirs. The wheel preferably, but not necessarily, has a central hole 22 which makes it possible to lighten it.

Les fig. 5 et 6 montrent plus particulièrement la forme du châssis 3, formé essentiellement par une plaque horizontale 23 supportant la semelle de la chaussure et une plaque verticale 24 percée de deux grands orifices circulaires 25 et 26 pour le montage des éléments tubulaires 21 des roulettes 4 et 5, les joues 20 de chaque roulette se trouvant respectivement de part et d'autre de cette plaque 24. Bien entendu, on pourrait prévoir un patin similaire ayant plus de deux roulettes consécutives, montées en alignement ou suivant un profil longitudinal incurvé. Par ailleurs, la plaque 24 est percée de trous 27 et 28 pour la fixation des butoirs avant 6 et arrière 7 par des vis, et de trous 29 et 30 pour le montage d'un dispositif de freinage qui sera décrit plus loin.Figs. 5 and 6 show more particularly the shape of the chassis 3, formed essentially by a horizontal plate 23 supporting the sole of the shoe and a vertical plate 24 pierced with two large circular orifices 25 and 26 for mounting the tubular elements 21 of the rollers 4 and 5, the cheeks 20 of each roller being located respectively on either side of this plate 24. Of course, one could provide a similar shoe having more than two consecutive rollers, mounted in alignment or according to a curved longitudinal profile. Furthermore, the plate 24 is pierced with holes 27 and 28 for fixing the front buffers 6 and rear 7 with screws, and holes 29 and 30 for mounting a braking device which will be described later.

La fig. 7 montre plus en détail une forme de réalisation avantageuse d'une roulette 4, 5 et son montage dans la plaque 24 du châssis. L'élément tubulaire 21 et les joues 20 de la roulette sont faits d'une seule pièce rigide, de préférence métallique, le pourtour des joues étant garni d'un bandage 32 en élastomère relativement dur qui a un profil en quart de cercle. A proximité de l'élément tubulaire 21, un espace élargi 33 est ménagé entre les deux joues 20 et renferme un roulement à billes 34 comprenant une bague extérieure 35, l'élément tubulaire 21 servant directement de bague intérieure du roulement. La bague 35 présente extérieurement un rebord plat 35a qui est ajusté dans une rainure à profil rectangulaire, ménagée dans l'épaisseur de la plaque 24 et contenant un élastomère relativement tendre 36 qui absorbe les chocs subis par la roulette, la bague 35 coulissant alors radialement dans la rainure. Dans cet exemple, la plaque 24 doit évidemment comporter une partie amovible 24a autour de la moitié inférieure de chaque roulement 34, pour permettre le montage des roulettes.Fig. 7 shows in more detail an advantageous embodiment of a caster 4, 5 and its mounting in the plate 24 of the chassis. The tubular element 21 and the cheeks 20 of the caster are made of a single rigid piece, preferably metallic, the periphery of the cheeks being lined with a bandage 32 made of relatively hard elastomer which has a quarter-circle profile. Near the tubular element 21, an enlarged space 33 is formed between the two cheeks 20 and contains a ball bearing 34 comprising an outer ring 35, the element tubular 21 serving directly as the inner ring of the bearing. The ring 35 has on the outside a flat rim 35a which is fitted into a rectangular profile groove, formed in the thickness of the plate 24 and containing a relatively elastomer soft 36 which absorbs the shocks undergone by the caster, the ring 35 then sliding radially in the groove. In this example, the plate 24 must obviously have a removable part 24a around the lower half of each bearing 34, to allow the mounting of the rollers.

Dans la variante illustrée en fig. 8, on parvient à réduire à quelques millimètres l'intervalle entre les deux bandages 32 de la roulette, en donnant aux joues 20 un profil en forme d'étau et en ménageant dans chaque face de la plaque 24 une rainure 38 en arc de cercle pour le passage du bandage 32. Comme la partie amincie 39 de la plaque 24 est en arc de cercle, il n'en résulte pas un affaiblissement notable de la plaque. En revanche, l'une des joues 20 doit être amovible pour permettre le montage et le démontage de la roulette.In the variant illustrated in FIG. 8, it is possible to reduce the interval between the two casings 32 of the caster wheel to a few millimeters, by giving the cheeks 20 a profile in the form of a vice and by making in each face of the plate 24 a groove 38 in an arc for the passage of the tire 32. As the thinned part 39 of the plate 24 is in an arc, this does not result in a significant weakening of the plate. On the other hand, one of the cheeks 20 must be removable to allow the mounting and dismounting of the caster.

En outre, les roulettes en forme de bobines permettent avantageusement le montage d'un mécanisme de rotation dans un seul sens (non représenté) disposé entre la surface interne d'une joue 20 et une surface latérale de la plaque 24 ou de la bague 35. Il peut s'agir par exemple d'une rondelle métallique à ailettes obliques coopérant avec de fines rainures radiales ménagées dans lesdites surfaces, ou d'un roulement à billes du type "roue libre", qui se bloque automatiquement sitôt qu'il amorce une rotation en arrière. Ainsi, la roulette ne peut tourner qu'en avant et permet au patineur de se propulser aisément, notamment à la montée.In addition, the rollers in the form of coils advantageously allow the mounting of a rotation mechanism in one direction (not shown) disposed between the internal surface of a cheek 20 and a lateral surface of the plate 24 or of the ring 35 It may for example be a metal washer with oblique fins cooperating with fine radial grooves formed in said surfaces, or a ball bearing of the "freewheel" type, which locks automatically as soon as it starts a backward rotation. Thus, the caster can only turn forward and allows the skater to propel himself easily, especially when climbing.

Les fig. 9 à 11 illustrent un dispositif de freinage réglable 40 qui est monté sur la plaque 24 du châssis entre les deux roulettes 4 et 5. Pour chaque roulette, le dispositif de freinage comporte un bâti coulissant 41 comprenant une paire de plaques métalliques 42 pourvues chacune d'une tête 43 et reliées l'une à l'autre par deux axes 44 et 45 qui peuvent coulisser dans les trous oblongs 29 (fig. 6) du châssis. Chaque axe 44 et 45 porte une paire de roues de freinage 46 et 47 en matière compressible, qui sont disposées de part et d'autre de la plaque 24 et qui sont pressées contre elle, par exemple au moyen de rondelles élastiques, afin d'assurer un freinage par friction contre cette plaque. Les têtes 43 des deux bâtis coulissants sont appliquées contre une came centrale 48 dont la rotation est commandée par une crémaillère 49 qui coulisse longitudinalement dans une rainure du châssis sous l'effet d'un poussoir arrière 50 (fig. 1) et d'un ressort de rappel. Par ailleurs, la crémaillère 49 est maintenue en position par un mécanisme à cliquet (non représenté) que l'on peut débloquer en soulevant le poussoir 50. Dans le cas présent, on remarque que la came 48 comporte, de chaque côté du châssis, des surfaces de came 51 et 52 qui sont distinctes pour les mécanismes de freinage avant et arrière, mais qui sont semblables et décalées angulairement l'une par rapport à l'autre pour produire simultanément le même effet de freinage dans les deux mécanismes.Figs. 9 to 11 illustrate an adjustable braking device 40 which is mounted on the plate 24 of the chassis between the two rollers 4 and 5. For each caster, the braking device comprises a sliding frame 41 comprising a pair of metal plates 42 each provided with 'a head 43 and connected to each other by two pins 44 and 45 which can slide in the oblong holes 29 (fig. 6) of the frame. Each axis 44 and 45 carries a pair of braking wheels 46 and 47 of compressible material, which are arranged on either side of the plate 24 and which are pressed against it, for example by means of elastic washers, in order to ensure friction braking against this plate. The heads 43 two sliding frames are applied against a central cam 48 whose rotation is controlled by a rack 49 which slides longitudinally in a groove of the chassis under the effect of a rear pusher 50 (fig. 1) and a return spring . Furthermore, the rack 49 is held in position by a ratchet mechanism (not shown) which can be released by lifting the pusher 50. In the present case, it is noted that the cam 48 comprises, on each side of the chassis, cam surfaces 51 and 52 which are separate for the front and rear braking mechanisms, but which are similar and angularly offset from one another to simultaneously produce the same braking effect in the two mechanisms.

On décrira le fonctionnement du dispositif de freinage en se référant également à la fig. 11 qui montre le profil d'une des surfaces périphériques 51 de la came 48, cette came étant rotative autour de son axe 53. La tête 43 du bâti coulissant 41 est pressée contre la surface 51 simplement par l'élasticité propre de la matière constituant les roues de freinage 46 et 47. Différentes positions de l'appui de la tête 43 contre la surface 51 au cours de la rotation de la came sont marquées par une graduation allant de 0 à 4. En position 0, le bâti 41 est suffisamment reculé par rapport à la roulette correspondante 4, 5 pour que la roue 46 ne touche pas le bandage 32 et que la roulette ne soit donc pas freinée. En position 1, la roue 46 s'appuie légèrement contre le bandage 32 et elle glisse sur lui, car sa friction contre la plaque 24 est assez forte pour l'empêcher de tourner à ce stade. En position 2 au contraire, la friction de la roue 46 sur le bandage 32 devient plus forte et fait tourner la roue 46, le freinage s'effectuant alors contre la plaque 24. En position 3, la poussée exercée par la roulette est assez forte pour que la roue 46 recule jusqu'à toucher la seconde roue de freinage 47, grâce à sa déformation par élasticité ou, le cas échéant, grâce à un montage élastique coulissant de son axe 44 dans le bâti 41. Le freinage est alors renforcé par la friction de la roue 47 contre la plaque 24. Enfin, en position 4, on obtient un freinage encore plus fort permettant de bloquer complètement la roue, par appui de la tête 43 contre la roue 47 grâce à l'élasticité de cette dernière autour de l'axe 45. La crémaillère 49 est retenue par une butée afin que la came 48 ne puisse pas tourner au-delà de la position 4.The operation of the braking device will be described with reference also to FIG. 11 which shows the profile of one of the peripheral surfaces 51 of the cam 48, this cam being rotatable about its axis 53. The head 43 of the sliding frame 41 is pressed against the surface 51 simply by the inherent elasticity of the material constituting the braking wheels 46 and 47. Different positions of the support of the head 43 against the surface 51 during the rotation of the cam are marked by a graduation going from 0 to 4. In position 0, the frame 41 is sufficiently moved back relative to the corresponding caster 4, 5 so that the wheel 46 does not touch the tire 32 and the caster is therefore not braked. In position 1, the wheel 46 bears lightly against the tire 32 and it slides over it, because its friction against the plate 24 is strong enough to prevent it from turning at this stage. In position 2 on the contrary, the friction of the wheel 46 on the tire 32 becomes stronger and turns the wheel 46, the braking then taking place against the plate 24. In position 3, the thrust exerted by the caster is strong enough so that the wheel 46 moves back until it touches the second braking wheel 47, thanks to its deformation by elasticity or, if necessary, thanks to an elastic mounting sliding from its axis 44 in the frame 41. The braking is then reinforced by the friction of the wheel 47 against the plate 24. Finally, in position 4, an even stronger braking is obtained making it possible to completely block the wheel, by pressing the head 43 against the wheel 47 thanks to the elasticity of the latter around of the axis 45. The rack 49 is retained by a stop so that the cam 48 cannot rotate beyond from position 4.

Ce dispositif permet de résoudre d'une manière simple le problème du freinage dosé et simultané de toutes les roulettes d'un patin pour permettre au patineur de parcourir sans danger des descentes relativement raides. Le patineur peut augmenter à tout moment l'effort de freinage d'un patin en frappant sur le poussoir de commande 50 au moyen du butoir avant 6 de l'autre patin. Le déblocage peut s'effectuer en soulevant le poussoir 50 au moyen du même butoir ou manuellement.This device makes it possible to solve in a simple way the problem of the metered and simultaneous braking of all the rollers of a skate to allow the skater to safely travel relatively steep descents. The skater can increase the braking force of one skate at any time by hitting the control pusher 50 by means of the front stopper 6 of the other skate. Unlocking can be carried out by lifting the pusher 50 by means of the same stopper or manually.

La fig. 12 illustre plus spécialement l'utilisation des butoirs avant 6 et arrière 7. Le patineur peut utiliser le butoir avant 6 pour se propulser. Il incline alors son pied vers l'avant, sous un angle supérieur à l'angle B qui est égal à 41° dans le présent exemple, et il presse le butoir 6 contre le sol 19 pour se propulser en avant. Le butoir 7 sert de frein par friction contre le sol. Pour cela, le patineur incline son pied vers l'arrière, d'un angle supérieur à l'angle C qui vaut ici, de préférence, 29°. On remarque que la somme des angles B + C, soit 70°, est suffisamment élevée pour laisser au patineur une grande liberté d'incliner son pied en avant ou en arrière sans que les butoirs touchent le sol pendant qu'il patine.Fig. 12 more particularly illustrates the use of the front bumpers 6 and rear 7. The skater can use the front bumper 6 to propel himself. He then inclines his foot forward, at an angle greater than the angle B which is equal to 41 ° in the present example, and he presses the stopper 6 against the ground 19 to propel himself forward. The stopper 7 acts as a friction brake against the ground. For this, the skater tilts his foot backwards, by an angle greater than the angle C which is preferably here 29 °. We note that the sum of the angles B + C , that is to say 70 °, is high enough to allow the skater a great freedom to tilt his foot forward or backward without the stops touching the ground while he is skating.

La présente invention n'est pas limitée à l'exemple de réalisation décrit ci-dessus. En particulier, on pourra utiliser tous matériaux appropriés pour la construction des différents éléments, par exemple l'acier, du métal léger ou une matière synthétique rigide pour le châssis et pour les roulettes en forme de bobine. Le support de jambe articulé 10 peut aussi faire l'objet de multiples variantes au point de vue de la construction, du rembourrage et des organes de fixation à la jambe, notamment comme le montrent les publications citées plus haut.. Le cas échéant, il peut comporter une demi-coquille s'appliquant sur une certaine hauteur le long de la jambe, ou même être remplacé par une chaussure complète articulée ou flexible longitudinalement, à laquelle est fixé le châssis 3. Les publications DE-A-2 745 040 et CH-A-580′976 montrent différentes manières de fixer à la semelle d'une chaussure un châssis de patin formé principalement par une plaque longitudinale centrale.The present invention is not limited to the embodiment described above. In particular, any suitable material may be used for the construction of the various elements, for example steel, light metal or a rigid synthetic material for the chassis and for the rollers in the form of a coil. The articulated leg support 10 can also be the subject of multiple variants from the point of view of construction, padding and fixing devices to the leg, in particular as shown by the publications cited above. may include a half-shell applying over a certain height along the leg, or even be replaced by a complete shoe articulated or flexible longitudinally, to which the chassis is fixed 3. The publications DE-A-2 745 040 and CH-A-580′976 show different ways of attaching a skate frame formed mainly to the sole of a shoe by a central longitudinal plate.

Par rapport aux patins classiques à deux roues, les patins selon l'invention présentent l'avantage d'un châssis central qui peut être très rigide tout en étant simple et léger. La plaque centrale du châssis porte en même temps les deux roues, les butoirs et, le cas échéant, le dispositif de freinage. Combinée avec les roues en forme de bobine, cette construction simple permet de réaliser un patin qui est plus léger et moins coûteux que les patins classiques. Grâce à leur moyeu évidé et de grand diamètre, les roulettes en forme de bobines sont légères et ont un aspect esthétique, et de plus elles sont montées dans des paliers de grand diamètre qui sont peu encombrants tout en étant très résistants aux chocs grâce au grand nombre de billes qu'ils peuvent contenir. Comme les deux bandages de chaque roulette sont proches du plan médian, les points d'appui au sol sont toujours très proches de ce plan médian. Ceci permet à l'utilisateur de patiner d'une manière plus précise, plus facile et plus sûre. Les patins selon l'invention permettent à un patineur les mêmes évolutions que celles d'un patineur sur glace. L'utilisateur chaussé de ces patins peut aussi se déplacer aisément dans la rue ou dans un bâtiment, sur des pentes longitudinales ou transversales et sur des escaliers.Compared to conventional two-wheel skates, the skates according to the invention have the advantage of a central chassis which can be very rigid while being simple and light. The central plate of the chassis simultaneously carries the two wheels, the buffers and, if necessary, the braking device. Combined with the reel-shaped wheels, this simple construction allows for a skate that is lighter and less expensive than conventional skates. Thanks to their large hollowed-out hub, the reel-shaped casters are light and have an aesthetic appearance, and moreover they are mounted in large-diameter bearings which are space-saving while being very resistant to shocks thanks to the large number of beads they can hold. As the two tires of each caster are close to the median plane, the ground support points are always very close to this median plane. This allows the user to skate more precisely, easier and safer. The skates according to the invention allow a skater the same developments as those of an ice skater. The user wearing these skates can also move easily in the street or in a building, on longitudinal or transverse slopes and on stairs.

L'invention s'applique aussi bien à des patins conçus pour évoluer sur une piste ou pour le patinage artistique, qu'à des patins destinés à des déplacements dans la rue ou dans des bâtiments.The invention applies as well to skates designed to evolve on a track or for figure skating, as to skates intended for movement on the street or in buildings.

Claims (11)

  1. Roller-skate including an under-frame (3), at least two rollers (4, 5) fixed on a lower part of this under-frame and aligned one behind the other in a common median plane perpendicular to their axes of rotation, and support means (10, 11) to fix the under-frame to a foot and to the corresponding leg of a user, characterized in that each one of the rollers (4, 5) includes two circular flanges (20) substantially parallel and of the same external diameter, and a tubular portion (21) of lesser eternal diameter which is joined with the two circular flanges (20), and in that said tubular portion (21) is fixed inside a rolling plummer-block (34) located in the median plane and fixed in a orifice (25, 26) of a central plate (24) arranged to support it, said central plate (24) being a at of said lower part of the under-frame and being located in the median plane.
  2. Roller-skate according to claim 1, characterized in that said lower part of the under-frame includes a common central longitudinal plate (24) located in the median plane and in which are mounted the plummer-blocks (34) of the two rollers, this plate being joined to a support plate (23) stretching under the foot of the user.
  3. Roller-skate according to claim 1 or 2, characterized in that an elastic element (36) is placed between each rolling plummer-block (34) and the central plate (24).
  4. Roller-skate according to claim 3, characterized in that each rolling plummer-block includes an external ring (35) equipped externally with a radial border (35a) mounted with a radial clearance in a groove of the central plate, an elastic material (36) being intercalated between this border and the bottom of the groove to absorb shock.
  5. Roller-skate according to claim 4, characterized in that the rolling plummer-block is a ball-bearing (34), the internal ring of which is formed by the tubular portion (21) of the roller.
  6. Roller-skate according to claim 1, characterized in that the external edge of each flange (20) of the rollers is furnished with a band (32) of elastomer.
  7. Roller-skate according to claim 1, characterized in that each roller (4, 5) is hollowed out by a central hole (22) axially transversing the whole roller, this hole not containing any mechanical element.
  8. Roller-skate according to claim 2, characterized in that a braking mechanism (40) of the rollers is fixed on the central plate (24) of the under-frame and includes braking means (41 to 47) mounted in a sliding manner along this plate to be in contact with the rollers, and a central control mechanism (48 to 52).
  9. Roller-skate according to claim 8, characterized in that a braking means includes at least a sliding frame (41) holding a wheel (46) bearing against the central plate (24) of the under-frame and disposed to roll on the edge (32) of a flange of the corresponding roller.
  10. Roller-skate according to claim 1, characterized in that at least one roller (4, 5) is equipped with a mechanism of rotation in only one direction, to prevent rotation to the rear.
  11. Roller-skate according to claim 1, characterized in that the said support means (10) include a collar (11) arranged to be fixed around the leg of the user and connected to the under frame transversely by a rigid mechanism ( 13 to 15 ), but articulated in relation to a transverse axis (Y) at the level of the ankle of the user.
EP88908654A 1987-10-23 1988-10-17 Roller skates comprising at least two rollers aligned along a medial plane Expired - Lifetime EP0340260B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88908654T ATE83941T1 (en) 1987-10-23 1988-10-17 ROLLER SKATE WITH AT LEAST TWO ALIGNED WHEELS ALONG A CENTRAL PLANE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8714884 1987-10-23
FR8714884A FR2622119B1 (en) 1987-10-23 1987-10-23 CASTER SKATE HAVING AT LEAST TWO CASTERS MOUNTED IN A MEDIAN PLAN

Publications (2)

Publication Number Publication Date
EP0340260A1 EP0340260A1 (en) 1989-11-08
EP0340260B1 true EP0340260B1 (en) 1992-12-30

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Family Applications (1)

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EP88908654A Expired - Lifetime EP0340260B1 (en) 1987-10-23 1988-10-17 Roller skates comprising at least two rollers aligned along a medial plane

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US (1) US5069462A (en)
EP (1) EP0340260B1 (en)
JP (1) JPH02501711A (en)
AT (1) ATE83941T1 (en)
DE (1) DE3877186T2 (en)
FR (1) FR2622119B1 (en)
WO (1) WO1989003712A1 (en)

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Also Published As

Publication number Publication date
JPH02501711A (en) 1990-06-14
FR2622119A1 (en) 1989-04-28
US5069462A (en) 1991-12-03
WO1989003712A1 (en) 1989-05-05
DE3877186D1 (en) 1993-02-11
ATE83941T1 (en) 1993-01-15
DE3877186T2 (en) 1993-06-09
EP0340260A1 (en) 1989-11-08
FR2622119B1 (en) 1990-09-07

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