EP0404203B1 - Ski brake - Google Patents

Ski brake Download PDF

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Publication number
EP0404203B1
EP0404203B1 EP19900113567 EP90113567A EP0404203B1 EP 0404203 B1 EP0404203 B1 EP 0404203B1 EP 19900113567 EP19900113567 EP 19900113567 EP 90113567 A EP90113567 A EP 90113567A EP 0404203 B1 EP0404203 B1 EP 0404203B1
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EP
European Patent Office
Prior art keywords
ski
brake
cam surface
pedal
cam
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
EP19900113567
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German (de)
French (fr)
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EP0404203A1 (en
Inventor
Andreas Janisch
Helmut Wladar
Johann Zotter
Friedrich Leichtfried
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TMC Corp
Original Assignee
HTM Sport und Freizeitgerate GmbH
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Publication date
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Publication of EP0404203A1 publication Critical patent/EP0404203A1/en
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Publication of EP0404203B1 publication Critical patent/EP0404203B1/en
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/10Hinged stoppage blades attachable to the skis in such manner that these blades can be moved out of the operative position
    • A63C7/1006Ski-stoppers
    • A63C7/1013Ski-stoppers actuated by the boot
    • A63C7/1033Ski-stoppers actuated by the boot articulated about at least two transverse axes
    • A63C7/104Ski-stoppers actuated by the boot articulated about at least two transverse axes laterally retractable above the ski surface

Definitions

  • the invention relates to a ski brake according to the first part of claim 1.
  • Such a ski brake is already known and is described in document FR-A-2 512 682.
  • This embodiment had the disadvantage that the support element was designed as a vertical bolt rounded at the top, which was anchored vertically in the base plate and which acted on the central region of the coil spring as soon as the actuation pedal was depressed.
  • the section of the bolt extending within the height of the base plate determined the extent to which the free end sections of the two brake arms pivoted in. For this reason, this section had to be steep, which in turn resulted in the use of a relatively strong coil spring, which acted on the heel of the shoe with an increased force component. As a result, the hold-down force exerted by the heel holder on the shoe was adversely affected.
  • the coil spring Due to the force acting centrally on the coil spring, the coil spring was further bent from its straight starting position into a curved position. The bending force exerted by the bolt on the coil spring was attacked in a narrow area, which led to a high load on the coil spring.
  • actuation pedal articulated on the base plate is acted upon by a tension spring which is anchored at one end in the actuation pedal itself in an eyelet.
  • the other end of the tension spring hangs on a connecting rod that connects two sockets.
  • These bushings receive the angled end sections of two brake arms, which are mounted in bearing eyes, which are arranged on tabs that can be pivoted about vertical axes of the base plate.
  • Two control cams are attached to the base plate, which cause the brake arms to pivot when the actuation pedal is depressed.
  • a disadvantage of this known embodiment is that the actuating pedal and the straight sections of the brake arms running in the longitudinal direction of the actuating pedal can be pivoted in opposite directions. As a result, when the actuating pedal is pivoted down, the two brake arms are pivoted against a pressure acting in the longitudinal direction of the individual brake arm sections. Furthermore, not only do the two sockets slide along the underside of the actuation pedal while the actuation pedal is being pivoted up or down, but the angled, mutually facing end sections of the two brake arms are additionally pivoted within the sockets. As a result, however, the friction arising in the guidance of the two brake arms is increased in an unfavorable manner.
  • Another disadvantage, which also increases the friction, is that the two brake arms are mounted in bearing points which can be pivoted relative to the base plate, and thus friction does not only occur between the two bearing points and the base plate, but also within the two bearing points that this well-known ski brake could not be realized until now.
  • the object of the invention is to eliminate the disadvantages of the known designs and to create a ski brake of the type outlined at the outset, in which, on the one hand, the stress on the helical spring connecting the end sections of the brake mandrels and, on the other hand, the friction which arises during the raising and lowering of the actuating pedal is significantly reduced.
  • the pressure applied by the operating pedal to the straight sections of the brake arms in their longitudinal direction should also be avoided.
  • the subject of claim 3 improves the contact of the coil spring on the control surface.
  • the measure of claim 4 leads to a stiffening of the actuation pedal, which can therefore be made from a thinner sheet with constant flexural strength.
  • Claim 6 includes an advantageous variant.
  • FIG. 1 to 6 show an exemplary embodiment of the invention.
  • 1 shows a section along the line II in FIG. 3 through the ski brake in the braking position
  • FIG. 2 shows the same section through the ski brake with the actuation pedal pivoted down
  • FIG. 3 shows a plan view of FIG. 1.
  • Figures 4 and 5 show the ski brake in the downhill position similar to Figures 2 and 3.
  • Figure 6 is a partially sectioned view in the direction of arrow A in Figure 2
  • Figure 7 is a partially sectioned view in Direction of arrow B in Fig.4.
  • a variant of the control according to FIG. 7 is shown in FIG. Fig.4a shows a further variant of the control in the position as Fig.4.
  • Fig. 8 shows a detail of the ski brake in an oblique view.
  • FIGS. 1-6 The embodiment of a ski brake 1 shown in FIGS. 1-6 has a base plate 2 which is fastened to the top 10a of a ski 10 and in which a pivot axis 3 is mounted.
  • An actuating pedal 4 is arranged on this pivot axis 3 and is under the influence of a positioning spring 11.
  • two bores 2b are recessed in the base plate 2, which, as is known per se, expand conically towards the outside.
  • the actuating pedal 4 is approximately rectangular in plan view, bounded by side walls 4i and has a central recess 4f with a downwardly projecting edge 4g. At the edge 4g, in the area remote from the pivot axis 3, there is a control surface 4h with surface sections 4h1 and 4h2. Furthermore, the side walls 4i of the actuation pedal 4 are provided with bends 4k which are directed towards the vertical longitudinal center plane of the ski brake 1.
  • the actuating pedal 4 accommodates two brake arms 7 which are made of a wire material and are angled several times.
  • Each brake arm 7 has an angled end section 7a running in the transverse direction to the actuating pedal 4, to which is connected a straight section 7b running in the longitudinal direction of the actuating pedal 4, an angled section 7c again running in the transverse direction and a straight section 7d adjoining this , which 'carries a brake blade 7e shown only in Fig.1.
  • both brake arms 7 are pivotally mounted with their transverse, angled sections 7c.
  • the subsequent straight sections 7d carry brake blades 7e.
  • the straight sections 7b adjoining the angled sections 7c within the base plate 2 merge into angled end sections 7a, which are directed towards the longitudinal center plane.
  • the end portions 7a of the two brake arms 7 are connected to each other by a coil spring 12 wound by man.
  • the base plate 2 has in its central region an extension 2c which acts as a support element and which has a boundary surface 2d which is inclined with respect to the upper side 10a of the ski 10. This is coated with a low-friction material. Furthermore, as indicated in the view in the direction of arrow A in FIG. 2 and shown in FIG. 6, the boundary surface 2d is provided with sections 2e dropping to the narrow sides of the ski 10; see. also Fig. 8.
  • the first or second surface section 4h1 or 4h2 of the control surface 4h of the actuation pedal 4 in cooperation with the upper boundary surface 2d of the approach 2c of the base plate 2 determines the position of the brake arms 7 and that of the coil spring 12 in the swung-down or depressed position of the actuation pedal 4th
  • the individual parts of the ski brake 1 are in the position shown in FIG. 1.
  • the coil spring 12 lies on the surface section 4h 1 Control surface 4h.
  • the brake blades 7e and the straight sections 7d of the brake arms 7 are located at a lateral distance from the narrow side surfaces of the ski 10.
  • the edge 4g or the beginning of the first surface section 4h 1 of the control surface 4h lies opposite the apex of the boundary surface 2d of the shoulder 2c.
  • the coil spring 12 in the depressed position of the operating pedal 4, is in the second surface section 4h 2 of the control surface 4h.
  • the angled end sections 7a of the brake arms 7 are moved further away from the pivot axis 3, the brake arms 7 themselves are pivoted with their angled sections 7c in the conical bores 2b, and the straight sections 7d carrying the brake blades 7e lie within the upper side 10a of the ski 10.
  • the ski brake 1 is thus in the ready position for the descent.
  • FIG. 7 shows the position of the ski brake 1 in the ready position from the direction of the arrow B in FIG. 4.
  • the coil spring 12 of the ski brake 1 rests on the upper boundary surface 2d of the extension 2c such that the central windings of the coil spring 12 fill the space between the second surface section 4h2 of the control surface 4h of the actuating pedal 4 and the upper boundary surface 2d of the extension 2c.
  • the turns running in the free end regions lie exclusively on the control surface 4h of the actuating pedal 4 because, due to the extension of the coil spring 12, these windings are pushed upwards.
  • FIG. 8 shows, for better illustration, the design of a detail of the base plate 2 with the shoulder 2c and the course of the upper boundary surface 2d of the latter in an oblique view.
  • the components used in FIG. 8 correspond to those already described.
  • the variant according to FIG. 7a differs from the embodiment according to FIGS. 1 to 7 in that the control surface 4'h of the actuating pedal 4 'is convex, whereas the upper boundary surface 2'd of the extension 2'c - in a normal plane viewed transversely to the longitudinal axis of the ski brake 1 '- has a flat course.
  • the upper boundary surface 2'd of the extension 2'c also has a course which slopes away from the pivot axis and slopes towards the top 10'a of the ski 10 '.
  • both the boundary surface 2 ′ d of the shoulder 2 ′ c and the control surface 4 ′ h of the actuation pedal 4 ′′ are each designed to run in one plane. This creates a gap during the stretching of the helical spring 12 ′′ between the central region thereof and the boundary surface 2 ′ d of the shoulder 2 ′′ c, so that the helical spring 12 ′′ only along the both lateral areas of the boundary surface 2''d of the neck 2''c is guided.
  • the further construction of the ski brake 1 ′′ corresponds to that of FIGS. 1 to 7.
  • the ski brake 1 When the ski boot is removed, whether due to an arbitrary exit or an involuntary fall, the ski brake 1 is brought into its braking position according to FIG.
  • the positioning spring 11 and coil spring 12 are matched to one another in such a way that the sections 7d of the two brake arms 7 carrying the brake blades 7e come earlier outside the width of the upper side 10a of the ski 10 before the positioning spring 11 places the two brake arms 7 on the upper side 10a of the ski 10 would arrive. This measure also ensures that the two brake blades 7e do not become caught on the ski 7 when the ski shoe is entered into the ski brake 1.
  • ski brake 1 ′ corresponds to that of FIGS. 1 to 7
  • the function of the ski brakes 1 ′ and 1 ′′ is similar to that of the ski brake 1.
  • the above-mentioned release for the helical spring 12 or 12 ' can also be carried out in such a way that the upper boundary surface 2d of the extension 2c is designed cambered according to FIGS. h of the actuating pedal 4 'according to FIG. Similarly, however, the cambered configuration of the control surface 4'h of the actuation pedal 4 'according to FIG. 7a can be carried out by a course of the control surface 4'h rising towards the two sides.
  • Another possibility according to the invention is that the configuration of the control surface of the actuating pedal creates an exemption between the latter and the control surface during the stretching of the helical spring.
  • the helical spring viewed in its extended position, only rests with its two end regions on the control surface of the actuation pedal.
  • the invention is not limited to the exemplary embodiments shown in the drawing and described above. Rather, various modifications thereof are possible without leaving the scope of the invention.
  • a plate which has good sliding properties for example made of polytetrafluoroethylene, instead of coating it.
  • the boundary surface or the entire extension can be made from such a material.

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  • Braking Arrangements (AREA)
  • Braking Elements And Transmission Devices (AREA)

Description

Die Erfindung bezieht sich auf eine Skibremse nach dem ersten Teil des Anspruches 1.The invention relates to a ski brake according to the first part of claim 1.

Eine derartige Skibremse ist bereits bekannt und im Dokument FR-A-2 512 682 beschrieben. Diese Ausführungform hatte den Nachteil, daß das Abstützelement als vertikaler, oben abgerundeter Bolzen ausgebildet war, der in der Grundplatte senkrecht verankert war und der auf den mittleren Bereich der Schraubenfeder wirkte, sobald das Betätigungspedal niedergetreten worden ist. Dabei bestimmte der sich innerhalb der Höhe der Grundplatte erstreckende Abschnitt des Bolzens das Ausmaß des Einschwenkens der freien Endabschnitte der beiden Bremsarme. Aus diesem Grund mußte dieser Abschnitt steil verlaufen, wodurch sich wiederum die Verwendung einer verhältnismäßig starken Schraubenfeder ergab, die mit einer erhöhten Kraftkomponente auf den Schuhabsatz wirkte. Dadurch wurde aber die vom Fersenhalter auf den Schuh ausgeübte Niederhaltekraft ungünstig beeinflußt. Durch die mittig auf die Schraubenfeder wirkende Kraft wurde weiters die Schraubenfeder aus ihrer geraden Ausgangslage in eine gekrümmte Lage gebogen. Dabei erfolgte der Angriff der vom Bolzen auf die Schraubenfeder aufgebrachten Biegekraft in einem engen Bereich, was zu einer starken Beanspruchung der Schraubenfeder führte.Such a ski brake is already known and is described in document FR-A-2 512 682. This embodiment had the disadvantage that the support element was designed as a vertical bolt rounded at the top, which was anchored vertically in the base plate and which acted on the central region of the coil spring as soon as the actuation pedal was depressed. The section of the bolt extending within the height of the base plate determined the extent to which the free end sections of the two brake arms pivoted in. For this reason, this section had to be steep, which in turn resulted in the use of a relatively strong coil spring, which acted on the heel of the shoe with an increased force component. As a result, the hold-down force exerted by the heel holder on the shoe was adversely affected. Due to the force acting centrally on the coil spring, the coil spring was further bent from its straight starting position into a curved position. The bending force exerted by the bolt on the coil spring was attacked in a narrow area, which led to a high load on the coil spring.

Eine andere Ausführungsform kann dem Dokument AT-B 374 690 entnommen werden. Bei dieser Ausführungsform wird das an der Grundplatte angelenkte Betätigungspedal von einer Zugfeder beaufschlagt, die mit einem Ende im Betätigungspedal selbst in einer Öse verankert ist. Das andere Ende der Zugfeder hängt an einer Verbindungsstange, die zwei Buchsen miteinander verbindet. Diese Buchsen nehmen die abgewinkelten Endabschnitte von zwei Bremsarmen auf, die in Lageraugen gelagert sind, welche an Laschen angeordnet sind, die um vertikale Achsen der Grundplatte verschwenkt werden können. An der Grundplatte sind zwei Steuernocken befestigt, welche beim Niedertreten des Betätigungspedals das Verschwenken der Bremsarme herbeiführen.Another embodiment can be found in document AT-B 374 690. In this embodiment, the actuation pedal articulated on the base plate is acted upon by a tension spring which is anchored at one end in the actuation pedal itself in an eyelet. The other end of the tension spring hangs on a connecting rod that connects two sockets. These bushings receive the angled end sections of two brake arms, which are mounted in bearing eyes, which are arranged on tabs that can be pivoted about vertical axes of the base plate. Two control cams are attached to the base plate, which cause the brake arms to pivot when the actuation pedal is depressed.

Nachteilig bei dieser bekannten Ausführungsform ist, daß das Betätigungspedal und die in Längsrichtung des Betätigungspedals verlaufenden geraden Abschnitte der Bremsarme gegensinnig schwenkbar sind. Dadurch erfolgt bei einem Niederschwenken des Betätigungspedals das Verschwenken der beiden Bremsarme gegen einen in Längsrichtung der einzelnen Bremsarmabschnitte wirkenden Druck. Weiters gleiten während des Hoch- bzw. Niederschwenkens des Betätigungspedals nicht nur die beiden Buchsen entlang der Unterseite des Betätigungspedals, sondern es werden innerhalb der Buchsen, die abgewinkelten, einander zugewandten Endabschnitte der beiden Bremsarme zusätzlich verschwenkt. Dadurch wird aber die in der Führung der beiden Bremsarme entstehende Reibung in ungünstiger Weise erhöht. Ein weiterer, ebenfalls die Reibung erhöhender Nachteil ist darin gelegen, daß die beiden Bremsarme in relativ zur Grundplatte verschwenkbaren Lagerstellen gelagert sind und somit nicht nur zwischen den beiden Lagerstellen und der Grundplatte, sondern auch innerhalb der beiden Lagerstellen eine Reibung auftritt Die obigen Nachteile führten dazu, daß diese bekannte skibremse bis jetzt keine Realisierung finden konnte.A disadvantage of this known embodiment is that the actuating pedal and the straight sections of the brake arms running in the longitudinal direction of the actuating pedal can be pivoted in opposite directions. As a result, when the actuating pedal is pivoted down, the two brake arms are pivoted against a pressure acting in the longitudinal direction of the individual brake arm sections. Furthermore, not only do the two sockets slide along the underside of the actuation pedal while the actuation pedal is being pivoted up or down, but the angled, mutually facing end sections of the two brake arms are additionally pivoted within the sockets. As a result, however, the friction arising in the guidance of the two brake arms is increased in an unfavorable manner. Another disadvantage, which also increases the friction, is that the two brake arms are mounted in bearing points which can be pivoted relative to the base plate, and thus friction does not only occur between the two bearing points and the base plate, but also within the two bearing points that this well-known ski brake could not be realized until now.

Die Erfindung stellt sich die Aufgabe, die Nachteile der bekannten Ausführungen zu beseitigen und eine Skibremse der eingangs umrissenen Art zu schaffen, bei der einerseits die Beanspruchung der die Endabschnitte der Bremsdorne verbindenden Schraubenfeder und andererseits auch die während des Hoch- und Niederschwenkens des Betätigungspedals entstehende Reibung erheblich reduziert wird. Dabei soll auch der vom Betätigungspedal auf die geraden Abschnitte der Bremsarme in deren Längsrichtung aufgebrachte Druck vermieden werden.The object of the invention is to eliminate the disadvantages of the known designs and to create a ski brake of the type outlined at the outset, in which, on the one hand, the stress on the helical spring connecting the end sections of the brake mandrels and, on the other hand, the friction which arises during the raising and lowering of the actuating pedal is significantly reduced. The pressure applied by the operating pedal to the straight sections of the brake arms in their longitudinal direction should also be avoided.

Diese Aufgabe wird erfindungsgemäß vor allem durch die in der Kennzeichnung des Anspruches 1 angeführten Merkmale gelöst.This object is achieved above all by the features stated in the characterizing part of claim 1.

Durch die erfingungsgemäße Ausgestaltung der Steuerfläche am Betätigungspedal wird beim Niedertreten des letzteren die Schraubenfeder zunächst von der Schwenkachse weg verschoben, wobei beide Bremsarme über die Skioberseite angehoben werden. Im Anschluß daran werden mittels des Abstützelementes die beiden Bremsarme so verschwenkt, daß die Bremsschaufeln über der Skioberseite zu liegen kommen. Dabei erfolgt der Angriff der Kraft in zwei Komponenten, die sich zu beiden Seiten der vertikalen Längsmittelebene befinden. Durch die weitere erfindungsgemäße Anordnung des Betätigungspedals und der beiden Bremsarme wird weiters eine ausschließlich gleitende Abstützung dieser miteinander verschwenkbaren Bauteile gewährleistet, wodurch das Entstehen eines in Richtung der geraden Abschnitte der beiden Bremsarme wirkenden Druckes - und dadurch das Entstehen zusätzlicher Reibungskräfte - mit Sicherheit vermieden wird.As a result of the configuration of the control surface on the actuation pedal according to the invention, when the latter is depressed, the coil spring is initially displaced away from the pivot axis, with both brake arms being raised above the top of the ski. Subsequently, the two brake arms are pivoted by means of the support element so that the brake blades come to rest over the top of the ski. The force is applied in two components, which are located on both sides of the vertical longitudinal median plane. Due to the further arrangement of the actuation pedal and the two brake arms according to the invention, an exclusively sliding support of these components which can be pivoted with one another is further ensured, whereby the generation of a pressure acting in the direction of the straight sections of the two brake arms - and thereby the generation of additional frictional forces - is avoided with certainty.

Durch die Merkmale des Anspruches 2 wird einerseits die Herstellung der Skibremse vereinfacht und anderseits ein, in Längsschnitt gesehen etwa keilförmiger Raum zwischen der Grundplatte und dem Betätigungspedal geschaffen, in dem die Schraubenfeder leicht in ihre Endlage gleiten kann.The features of claim 2, on the one hand, simplify the manufacture of the ski brake and, on the other hand, create an approximately wedge-shaped space, seen in longitudinal section, between the base plate and the actuating pedal, in which the coil spring can easily slide into its end position.

Durch den Gegenstand des Anspruches 3 wird die Anlage der Schraubenfeder an der Steuerfläche verbessert.The subject of claim 3 improves the contact of the coil spring on the control surface.

Die Maßnahme des Anspruches 4 führt zu einer Versteifung des Betätigungspedals, das daher aus einem dünneren Blech mit gleichbleibender Biegefestigkeit hergestellt werden kann.The measure of claim 4 leads to a stiffening of the actuation pedal, which can therefore be made from a thinner sheet with constant flexural strength.

Durch das Merkmal des Anspruches 5 wird der Abstand der Bremsschaufeln von der Skioberseite in deren eingeschwenktem Zustand vergrößert.Due to the feature of claim 5, the distance of the brake blades from the top of the ski is increased in their pivoted-in state.

Anspruch 6 beinhaltet eine vorteilhafte Variante.Claim 6 includes an advantageous variant.

In der Zeichnung sind beispielsweise Ausführungsformen des Erfindungsgegenstandes dargestellt. In Fig.1 bis 6 ist ein Ausführungsbeispiel der Erfindung wiedergegeben. Dabei zeigt Fig.1 einen Schnitt nach der Linie I-I in Fig.3 durch die in der Bremsstellung befindliche Skibremse, Fig.2 den gleichen Schnitt durch die Skibremse mit niedergeschwenktem Betätigungspedal und Fig.3 eine Draufsicht zu Fig.1. Die Fig.4 und 5 zeigen die Skibremse in der Abfahrtsstellung ähnlich der Fig.2 bzw. 3. Fig.6 ist eine teilweise geschnitte Ansicht in Richtung des Pfeiles A in Fig.2 und Fig.7 eine teilweise geschnitte Ansicht in Richtung des Pfeiles B in Fig.4. In Fig.7a ist eine Variante der Steuerung nach Fig.7 dargestellt. Fig.4a zeigt eine weitere Variante der Steuerung in der Stellung wie Fig.4. Fig.8 gibt ein Detail der Skibremse im Schrägriß wieder.In the drawing, for example, embodiments of the subject matter of the invention are shown. 1 to 6 show an exemplary embodiment of the invention. 1 shows a section along the line II in FIG. 3 through the ski brake in the braking position, FIG. 2 shows the same section through the ski brake with the actuation pedal pivoted down, and FIG. 3 shows a plan view of FIG. 1. Figures 4 and 5 show the ski brake in the downhill position similar to Figures 2 and 3. Figure 6 is a partially sectioned view in the direction of arrow A in Figure 2 and Figure 7 is a partially sectioned view in Direction of arrow B in Fig.4. A variant of the control according to FIG. 7 is shown in FIG. Fig.4a shows a further variant of the control in the position as Fig.4. Fig. 8 shows a detail of the ski brake in an oblique view.

Die in den Fig.1 - 6 dargestellte Ausführungsform einer Skibremse 1 besitzt eine Grundplatte 2, welche an der Oberseite 10a eines Ski 10 befestigt ist und in der eine Schwenkachse 3 gelagert ist. Auf dieser Schwenkachse 3 ist ein Betätigungspedal 4 angeordnet, das unter dem Einfluß einer Aufstellfeder 11 steht. Weiters sind in der Grundplatte 2 zwei Bohrungen 2b ausgespart, welche sich, wie an sich bekannt, nach außen hin konisch erweitern.The embodiment of a ski brake 1 shown in FIGS. 1-6 has a base plate 2 which is fastened to the top 10a of a ski 10 and in which a pivot axis 3 is mounted. An actuating pedal 4 is arranged on this pivot axis 3 and is under the influence of a positioning spring 11. Furthermore, two bores 2b are recessed in the base plate 2, which, as is known per se, expand conically towards the outside.

Das Betätigungspedal 4 ist in Draufsicht etwa rechteckig, mit Seitenwänden 4i begrenzt und besitzt eine mittige Ausnehmung 4f mit einem nach unten vorspringenden Rand 4g. An den Rand 4g schließt sich in dem von der Schwenkachse 3 entfernten Bereich eine Steuerfläche 4h mit Flächenabschnitten 4h₁ und 4h₂ an. Weiters sind die Seitenwände 4i des Betätigungspedals 4 mit Abbiegungen 4k versehen, die zur vertikalen Längsmittelebene der Skibremse 1 hin gerichtet sind.The actuating pedal 4 is approximately rectangular in plan view, bounded by side walls 4i and has a central recess 4f with a downwardly projecting edge 4g. At the edge 4g, in the area remote from the pivot axis 3, there is a control surface 4h with surface sections 4h₁ and 4h₂. Furthermore, the side walls 4i of the actuation pedal 4 are provided with bends 4k which are directed towards the vertical longitudinal center plane of the ski brake 1.

Im Betätigungspedal 4 sind zwei aus einem Drahtmaterial gefertigte, mehrfach abgewinkelte Bremsarme 7 untergebracht. Jeder Bremsarm 7 weist einen abgewinkelten, in Querrichtung zum Betätigungspedal 4 verlaufenden Endabschnitt 7a auf, an den sich ein in Längsrichtung des Betätigungspedals 4 verlaufender gerader Abschnitt 7b, an diesen ein wiederum in Querrichtung verlaufender abgewinkelter Abschnitt 7c und an diesen wiederum ein gerader Abschnitt 7d anschließt, welch' letzterer eine nur in Fig.1 dargestellte Bremsschaufel 7e trägt.The actuating pedal 4 accommodates two brake arms 7 which are made of a wire material and are angled several times. Each brake arm 7 has an angled end section 7a running in the transverse direction to the actuating pedal 4, to which is connected a straight section 7b running in the longitudinal direction of the actuating pedal 4, an angled section 7c again running in the transverse direction and a straight section 7d adjoining this , which 'carries a brake blade 7e shown only in Fig.1.

In den Bohrungen 2b der Grundplatte 2 sind beide Bremsarme 7 mit ihren quer verlaufenden, abgewinkelten Abschnitten 7c schwenkbar gelagert. Die anschließenden geraden Abschnitte 7d tragen Bremsschaufeln 7e. Die innerhalb der Grundplatte 2 an die abgewinkelten Abschnitte 7c anschließenden geraden Abschnitte 7b gehen in abgewinkelte Endabschnitte 7a über, welche gegen die Längsmittelebene hin gerichtet sind. Die Endabschnitte 7a der beiden Bremsarme 7 sind durch eine Mann-an-Mann gewickelte Schraubenfeder 12 miteinander verbunden.In the bores 2b of the base plate 2, both brake arms 7 are pivotally mounted with their transverse, angled sections 7c. The subsequent straight sections 7d carry brake blades 7e. The straight sections 7b adjoining the angled sections 7c within the base plate 2 merge into angled end sections 7a, which are directed towards the longitudinal center plane. The end portions 7a of the two brake arms 7 are connected to each other by a coil spring 12 wound by man.

Die Grundplatte 2 besitzt in ihrem mittleren Bereich einen als Abstützelement wirksamen Ansatz 2c, welcher eine gegenüber der Oberseite 10a des Ski 10 geneigte Begrenzungsfläche 2d aufweist. Diese ist mit einem reibungsarmen Material beschichtet. Des weiteren ist, wie in der Ansicht in Richtung des Pfeiles A in Fig.2 angedeutet und in Fig.6 dargestellt ist, die Begrenzungsfläche 2d mit zu den Schmalseiten des Ski 10 abfallenden Abschnitten 2e versehen; vgl. auch Fig.8. Dabei bestimmt der erste bzw. zweite Flächenabschnitt 4h₁ bzw. 4h₂ der Steuerfläche 4h des Betätigungspedals 4 in Zusammenwirken mit der oberen Begrenzungsfläche 2d des Ansatzes 2c der Grundplatte 2 die Lage der Bremsarme 7 und die der Schraubenfeder 12 in der niedergeschwenkten bzw. niedergetretenen Postition des Betätigungspedals 4.The base plate 2 has in its central region an extension 2c which acts as a support element and which has a boundary surface 2d which is inclined with respect to the upper side 10a of the ski 10. This is coated with a low-friction material. Furthermore, as indicated in the view in the direction of arrow A in FIG. 2 and shown in FIG. 6, the boundary surface 2d is provided with sections 2e dropping to the narrow sides of the ski 10; see. also Fig. 8. The first or second surface section 4h₁ or 4h₂ of the control surface 4h of the actuation pedal 4 in cooperation with the upper boundary surface 2d of the approach 2c of the base plate 2 determines the position of the brake arms 7 and that of the coil spring 12 in the swung-down or depressed position of the actuation pedal 4th

In der Bremsstellung befinden sich die einzelnen Teile der Skibremse 1 in der in Fig.1 dargestellten Lage. Dabei liegt die Schraubenfeder 12 an dem Flächenabschnitt 4h₁ der Steuerfläche 4h an. Die Bremsschaufeln 7e und die geraden Abschnitte 7d der Bremsarme 7 befinden sich im seitlichen Abstand von den Schmalseitenflächen des Ski 10.In the braking position, the individual parts of the ski brake 1 are in the position shown in FIG. 1. The coil spring 12 lies on the surface section 4h 1 Control surface 4h. The brake blades 7e and the straight sections 7d of the brake arms 7 are located at a lateral distance from the narrow side surfaces of the ski 10.

Wird nun das Betätigungspedal 4 vom Schuh des Skiläufers niedergeschwenkt, so werden die Endabschnitte 7a der beiden Bremsarme 7 durch die Abbiegungen 4k der Seitenwände 4i des Betätigungspedals 4 entlang der Unterseite desselben geführt. Die Schraubenfeder 12 wandert unter dem Einfluß der geneigten Begrenzungsfläche 2d entlang des ersten Abschnittes 4h₁ der Steuerfläche 4h in Richtung von der Schwenkachse 3 weg. Hiebei liegen die die Bremsschaufeln 7e tragenden geraden Abschnitte 7d der beiden Bremsarme 7 oberhalb der Oberseite 10a, jedoch außerhalb des Umrisses des Ski 10. Diese Stellung ist in Fig.2 wiedergegeben.If the actuation pedal 4 is now pivoted down by the skier's shoe, the end sections 7a of the two brake arms 7 are guided through the bends 4k of the side walls 4i of the actuation pedal 4 along the underside thereof. The coil spring 12 moves under the influence of the inclined boundary surface 2d along the first portion 4h₁ of the control surface 4h in the direction of the pivot axis 3 away. The straight sections 7d of the two brake arms 7 carrying the brake blades 7e are above the upper side 10a, but outside the outline of the ski 10. This position is shown in FIG.

Dabei liegt der Rand 4g bzw. der Beginn des ersten Flächenabschnittes 4h₁ der Steuerfläche 4h gegenüber dem Scheitel der Begrenzungsfläche 2d des Ansatzes 2c.The edge 4g or the beginning of the first surface section 4h 1 of the control surface 4h lies opposite the apex of the boundary surface 2d of the shoulder 2c.

In der niedergetretenen Lage des Betätigungspedals 4 befindet sich die Schraubenfeder 12, wie Fig.4 zeigt, im zweiten Flächenabschnitt 4h₂ der Steuerfläche 4h. Die abgewinkelten Endabschnitte 7a der Bremsarme 7 sind in dieser Stellung von der Schwenkachse 3 weiter weg bewegt, die Bremsarme 7 selbst sind mit ihren abgewinkelten Abschnitten 7c in den konischen Bohrungen 2b verschwenkt, und die die Bremsschaufeln 7e tragenden geraden Abschnitte 7d liegen innerhalb der Oberseite 10a des Ski 10. Die Skibremse 1 befindet sich somit in der Bereitschaftsstellung für die Abfahrt.In the depressed position of the operating pedal 4, the coil spring 12, as shown in FIG. 4, is in the second surface section 4h 2 of the control surface 4h. In this position, the angled end sections 7a of the brake arms 7 are moved further away from the pivot axis 3, the brake arms 7 themselves are pivoted with their angled sections 7c in the conical bores 2b, and the straight sections 7d carrying the brake blades 7e lie within the upper side 10a of the ski 10. The ski brake 1 is thus in the ready position for the descent.

Die Fig.7 zeigt die Lage der Skibremse 1 in der Bereitschaftsstellung aus der Richtung des Pfeiles B in Fig.4. Die Schraubenfeder 12 der Skibremse 1 liegt so auf der oberen Begrenzungsfläche 2d des Ansatzes 2c auf, daß die mittleren Windungen der Schraubenfeder 12 den Raum zwischen dem zweiten Flächenabschnitt 4h₂ der Steuerfläche 4h des Betätigungspedals 4 und der oberen Begrenzungsfläche 2d des Ansatzes 2c ausfüllen. Die in den freien Endbereichen verlaufenden Windungen liegen jedoch ausschließlich an der Steuerfläche 4h des Betätigungspedals 4 an, weil zufolge der Streckung der Schraubenfeder 12 diese Windungen nach oben gedrängt werden.7 shows the position of the ski brake 1 in the ready position from the direction of the arrow B in FIG. 4. The coil spring 12 of the ski brake 1 rests on the upper boundary surface 2d of the extension 2c such that the central windings of the coil spring 12 fill the space between the second surface section 4h₂ of the control surface 4h of the actuating pedal 4 and the upper boundary surface 2d of the extension 2c. However, the turns running in the free end regions lie exclusively on the control surface 4h of the actuating pedal 4 because, due to the extension of the coil spring 12, these windings are pushed upwards.

Aus dieser Lage ist weiters erkennbar, daß für eine einwandfreie Funktion der Schraubenfeder 12 zwischen den beiden miteinander kooperierenden Flächen, nämlich der Steuerfläche 4h des Betätigungspedals 4 und der oberen Begrenzungsfläche 2d des Ansatzes 2c, irgendeine Freistellung erforderlich ist. Auf derartige Ausgestaltungen wird anhand der Fig.7a und 4a noch weiter unten eingegangen werden.From this position it can also be seen that some clearance is required for the helical spring 12 to function properly between the two cooperating surfaces, namely the control surface 4h of the actuating pedal 4 and the upper boundary surface 2d of the shoulder 2c. Such configurations will be discussed below with reference to FIGS. 7a and 4a.

Die Fig.8 zeigt, wie bereits erwähnt wurde, zur besseren Veranschaulichung die Ausgestaltung eines Details der Grundplatte 2 mit dem Ansatz 2c und den Verlauf der oberen Begrenzungsfläche 2d des letzteren im Schrägriß. Die in der Fig.8 verwendeten Bauteile entsprechen den bereits beschriebenen.As already mentioned, FIG. 8 shows, for better illustration, the design of a detail of the base plate 2 with the shoulder 2c and the course of the upper boundary surface 2d of the latter in an oblique view. The components used in FIG. 8 correspond to those already described.

Die Variante gemäß Fig.7a unterscheidet sich von der Ausführungsform nach den Fig.1 bis 7 dadurch, daß die Steuerfläche 4'h des Betätigungspedals 4' bombiert ausgeführt ist, wogegen die obere Begrenzungsfläche 2'd des Ansatzes 2'c - in einer Normalebene quer zur Längsachse der Skibremse 1'betrachtet - einen ebenen Verlauf aufweist. Dabei sei festgehalten, daß, in Längsschnitt oder im Aufriß betrachtet, auch die obere Begrenzungsfläche 2'd des Ansatzes 2'c einen von der Schwenkachse weggerichteten, zur Oberseite 10'a des Ski 10' abfallenden Verlauf aufweist. Durch diese Maßnahme wird bei dieser Ausgestaltung die vorangehend erwähnte Freistellung durch die bombierte Ausgestaltung der Steuerfläche 4'h des Betätigungspedals 4'und durch den ebenen Verlauf der oberen Begrenzungsfläche 2'd des Ansatzes 2'c geschaffen.The variant according to FIG. 7a differs from the embodiment according to FIGS. 1 to 7 in that the control surface 4'h of the actuating pedal 4 'is convex, whereas the upper boundary surface 2'd of the extension 2'c - in a normal plane viewed transversely to the longitudinal axis of the ski brake 1 '- has a flat course. It should be noted that, viewed in longitudinal section or in elevation, the upper boundary surface 2'd of the extension 2'c also has a course which slopes away from the pivot axis and slopes towards the top 10'a of the ski 10 '. By this measure, the above-mentioned exemption is created in this embodiment by the convex configuration of the control surface 4'h of the actuating pedal 4'and by the flat course of the upper boundary surface 2'd of the extension 2'c.

Bei der Ausführungsform gemäß Fig.4a sind sowohl die Begrenzungsfläche 2''d des Ansatzes 2''c als auch die Steuerfläche 4''h des Betätigungspedals 4'' jeweils in einer Ebene verlaufend ausgebildet. Dadurch entsteht während des Streckens der Schraubenfeder 12'' zwischen dem mittleren Bereich derselben und der Begrenzungsfläche 2''d des Ansatzes 2''c ein Spalt, so daß die Schraubenfeder 12'' nur entlang der beiden seitlichen Bereiche der Begrenzungsfläche 2''d des Ansatzes 2''c geführt wird. Der weitere Aufbau der Skibremse 1'' entspricht jenem der Fig.1 bis 7.In the embodiment according to FIG. 4 a, both the boundary surface 2 ′ d of the shoulder 2 ′ c and the control surface 4 ′ h of the actuation pedal 4 ″ are each designed to run in one plane. This creates a gap during the stretching of the helical spring 12 ″ between the central region thereof and the boundary surface 2 ′ d of the shoulder 2 ″ c, so that the helical spring 12 ″ only along the both lateral areas of the boundary surface 2''d of the neck 2''c is guided. The further construction of the ski brake 1 ″ corresponds to that of FIGS. 1 to 7.

Bei einem Entfernen des Skischuhs, sei es durch willkürliches Aussteigen oder durch einen unwillkürlichen Sturz, wird die Skibremse 1 durch die Aufstellfeder 11 in ihre Bremslage nach Fig.1 gebracht. Dabei sind die Aufstellfeder 11 und Schraubenfeder 12 so aufeinander abgestimmt, daß die die Bremsschaufeln 7e tragenden Abschnitte 7d der beiden Bremsarme 7 früher außerhalb der Breite der Oberseite 10a des Ski 10 kommen, bevor die Aufstellfeder 11 die beiden Bremsarme 7 auf der Oberseite 10a des Ski 10 ankommen lassen würde. Durch diese Maßnahme wird auch bei dem Einstieg mit dem Skischuh in die Skibremse 1 sichergestellt, daß kein Verhängen der beiden Bremsschaufeln 7e am Ski 7 entsteht.When the ski boot is removed, whether due to an arbitrary exit or an involuntary fall, the ski brake 1 is brought into its braking position according to FIG. The positioning spring 11 and coil spring 12 are matched to one another in such a way that the sections 7d of the two brake arms 7 carrying the brake blades 7e come earlier outside the width of the upper side 10a of the ski 10 before the positioning spring 11 places the two brake arms 7 on the upper side 10a of the ski 10 would arrive. This measure also ensures that the two brake blades 7e do not become caught on the ski 7 when the ski shoe is entered into the ski brake 1.

Da der Aufbau der Skibremse 1'nach Fig.7a und der Skibremse 1'' nach Fig.4a im übrigen jenem der Fig.1 bis 7 entspricht, ist die Funktion der Skibremsen 1' und 1'' ähnlich jener der Skibremse 1.Since the structure of the ski brake 1 ′ according to FIG. 7 a and the ski brake 1 ″ according to FIG. 4 a corresponds to that of FIGS. 1 to 7, the function of the ski brakes 1 ′ and 1 ″ is similar to that of the ski brake 1.

Die erwähnte Freistellung für die Schraubenfeder 12 bzw. 12'kann auch derart erfolgen, daß die obere Begrenzungsfläche 2d des Ansatzes 2c nach den Fig.6 bis 8 bombiert ausgestaltet wird, wobei dann die Bombierung - im Gegensatz zu der Ausgestaltung der bombierten Steuerfläche 4'h des Betätigungspedals 4'nach Fig.7a - konkav ausgebildet ist. Ähnlich kann aber die bombierte Ausgestaltung der Steuerfläche 4'h des Betätigungspedals 4' nach Fig.7a durch einen nach den beiden Seiten hin ansteigenden Verlauf der Steuerfläche 4'h erfolgen. Eine weitere Möglichkeit besteht erfindungsgemäß darin, daß durch die Ausgestaltung der Steuerfläche des Betätigungspedals während des Streckens der Schraubenfeder zwischen dieser letzteren und der Steuerfläche eine Freistellung entsteht. Dabei liegt die Schraubenfeder, in ihrer gestreckten Lage betrachtet, nur mit ihren beiden Endbereichen an der Steuerfläche des Betätigungspedals an.The above-mentioned release for the helical spring 12 or 12 'can also be carried out in such a way that the upper boundary surface 2d of the extension 2c is designed cambered according to FIGS. h of the actuating pedal 4 'according to FIG. Similarly, however, the cambered configuration of the control surface 4'h of the actuation pedal 4 'according to FIG. 7a can be carried out by a course of the control surface 4'h rising towards the two sides. Another possibility according to the invention is that the configuration of the control surface of the actuating pedal creates an exemption between the latter and the control surface during the stretching of the helical spring. The helical spring, viewed in its extended position, only rests with its two end regions on the control surface of the actuation pedal.

Die Erfindung ist nicht auf die in der Zeichnung dargestellten und im vorstehenden beschriebenen Ausführungsbeispiele be - schränkt. Vielmehr sind verschiedene Abänderungen derselben möglich, ohne den Rahmen der Erfindung zu verlassen. Beispielsweise ist es in allen Ausführungsformen denkbar, die Begrenzungsfläche des Ansatzes mit einem gute Gleiteigenschaften aufweisenden Plättchen, beispielsweise aus Polytetrafluoräthylen, zu bedecken, anstatt sie zu beschichten. Des weiteren kann die Begrenzungsfläche oder der ganze Ansatz aus einem solchen Material gefertigt sein.The invention is not limited to the exemplary embodiments shown in the drawing and described above. Rather, various modifications thereof are possible without leaving the scope of the invention. For example, in all of the embodiments it is conceivable to cover the boundary surface of the attachment with a plate which has good sliding properties, for example made of polytetrafluoroethylene, instead of coating it. Furthermore, the boundary surface or the entire extension can be made from such a material.

Claims (6)

  1. A ski brake (1) comprising a base plate (2) to be secured to a ski (10) and having pivotally mounted therein on a pivot pin (3) extending transversely of its longitudinal axis, an actuator pedal (4) subjected to the action of an erector spring (11) and formed at spaced locations from said pivot pin (3) with conical bores (2b) for pivotally mounting therein two multiple-crank-shaped brake arms (7) made of a wire material, the mutually facing angularly bent end sections (7a) of said two brake arms (7) associated to said actuator pedal (4) being interconnected by a helical spring (12) slidably guided on a cam surface (4h) formed on the bottom said of said actuator pedal (4), said cam surface (4h) facing a countersupport element (2c) on said base plate (2) for said helical spring (12) to slide thereon by the action of said cam surface (4h) in response to said actuator pedal (4) being depressed,
    characterized in that as viewed in the direction from said pivot pin (3), said cam surface (4h) comprises a first cam section (4h₁) and a contiguous second cam section (4h₂), said first cam section (4h₁) of said cam surface (4h) being spaced from the top face of said actuator pedal (4) by a greater distance than said second cam section (4h₂) of said cam surface (4h), that said actuator pedal (4) and the linear sections (7b) of said brake arms (7) extending in the longitudinal direction of said actuator pedal (4) are pivotable in the same direction, and that said angularly bent end sections of said two brake arms (7) carrying said helical spring (12) are subjected in the brake position and in the partially depressed position of said actuator pedal (4) to the action of said first cam section (4h₁) of said cam surface (4h) and supported in the latter position on said countersupport element (2c), while in the fully depressed position of said actuator pedal (4), said end sections are caused by the cooperation of said second cam section (4h₂) of said cam surface (4) with said countersupport element (2c) to expand said helical spring (12) to thereby define the standby position of said brake arms (7).
  2. A ski brake according to claim 1, characterized in that said countersupport element (2c) is a raised portion disposed on said base plate (2) and preferably formed integrally therewith, sais raised portion (2c) being formed with a support surface (2d) obliquely inclined relative to the top face (10a) of said ski (10), with the root portion of said first cam section (4h₁) of said cam surface (4) being disposed substantially opposite the apex of said inclined support surface (2d) in the depressed position of said pedal (4) (fig. 2).
  3. A ski brake according to claim 2, characterized in that said support surface (2d) of said raised portion (2c) of said base plate (2) is provided with surface portions (2e) declining towards the lateral sides of said ski (10), or has a cambered configuration (figs. 6 - 8).
  4. A ski brake according to claim 1, characterized in that said actuator pedal (4) has its bottom side provided with a centrally and longitudinally extending cavity (4f) with a downwards projecting rim (4g), and that said first cam section (4h₁) of said cam surface (4h) has its root adjacent said projecting rim (4g) of said cavity (4f) (figs.1,2,4,4a).
  5. A ski brake according to claim 1, characterized in that - as viewed in a plane perpendicular to the top face (10'a) of said ski (10') extending transversely through said countersupport element (2'c) - said cam surface (4'h) of said actuator pedal (4') is of convex cambered configuration or provided with upwards inclined surface portions on its two sides (fig. 7a).
  6. A ski brake according to claim 1, characterized in that in the extended position of said helical spring, there is a free space betwen said cam surface and said helical spring, with said helical spring contacting said cam surface of said actuator pedal only with its two end portions.
EP19900113567 1987-10-02 1988-09-29 Ski brake Expired - Lifetime EP0404203B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2507/87 1987-10-02
AT0250787A AT390200B (en) 1987-10-02 1987-10-02 SKI BRAKE

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88116044.4 Division 1988-09-29

Publications (2)

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EP0404203A1 EP0404203A1 (en) 1990-12-27
EP0404203B1 true EP0404203B1 (en) 1993-06-23

Family

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Application Number Title Priority Date Filing Date
EP19880116044 Expired - Lifetime EP0310052B1 (en) 1987-10-02 1988-09-29 Ski brake
EP19900113567 Expired - Lifetime EP0404203B1 (en) 1987-10-02 1988-09-29 Ski brake

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19880116044 Expired - Lifetime EP0310052B1 (en) 1987-10-02 1988-09-29 Ski brake

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EP (2) EP0310052B1 (en)
AT (1) AT390200B (en)
DE (2) DE3882053D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410757B (en) * 1993-12-10 2003-07-25 Tyrolia Freizeitgeraete ski brake
DE19850297A1 (en) * 1998-10-30 2000-05-04 Marker Deutschland Gmbh Ski brake has double arm swivel brake lever connected to control part by slide guide having detent recess to hold brake lever firm in braking position against large forces acting on lever

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT368016B (en) * 1978-02-07 1982-08-25 Tyrolia Freizeitgeraete SKI BRAKE
AT374690B (en) * 1981-03-13 1984-05-25 Tyrolia Freizeitgeraete SKI BRAKE
DE3136079A1 (en) * 1981-09-11 1983-03-24 Roland 8100 Garmisch-Partenkirchen Jungkind Ski brake
DE3145646A1 (en) * 1981-11-17 1983-05-26 Marker Patentverwertungsgesellschaft mbH, 6340 Baar SKISTOPPER

Also Published As

Publication number Publication date
DE3882053D1 (en) 1993-07-29
EP0310052A1 (en) 1989-04-05
DE3864224D1 (en) 1991-09-19
EP0310052B1 (en) 1991-08-14
ATA250787A (en) 1989-09-15
EP0404203A1 (en) 1990-12-27
AT390200B (en) 1990-03-26

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