Land vehicles – Skates – Shoe attaching means
Patent
1989-07-06
1991-07-09
Kashnikow, Andres
Land vehicles
Skates
Shoe attaching means
280617, 280634, A63C 908
Patent
active
050298909
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a safety ski binding for a sports item, such as a snowboard, snow-gliding device or monoski,
DESCRIPTION OF THE RELATED ART
In the case of a safety binding of this type for a snowboard, known from U.S. Pat. No. 4,652,007, the binding units are connected via coupling parts which are only in interlocking engagement with the latter, which give rise to problems in conjunction with board flexure, can be dangerous in the case of release as freely movable parts and, above all, have the disadvantage that the release characteristic of the binding units cannot be set individually.
In the case of a snow-gliding device according to German Utility Model 8,105,142, the supporting board on which the binding units are fitted is mounted by means of flexible coupling parts on two ski elements or skids arranged one behind the other, as a result of which the user can control movements relative to the ski-run during the descent. On its upper side, the supporting board bears holding means for ski boots, which are designed in the form of straps, but which do not ensure a defined position of the ski boots on the supporting board. In addition, in the event of a fall of the user, there is the danger of one ski boot hanging in the strap, and thus on the supporting board, as a result of which injuries may occur.
A similar type of fastening of the two ski boots, although in this case on a monoski, is described in U.S. Pat. No. 4,403,785. In the case of this design, the two straps can be adjusted along guide rails, which are arranged on the upper side of the monoski.
EU-A 20147753 shows a monoski with two safety bindings. Here too, there is the risk of the one ski boot remaining in the ski binding when the other ski boot comes free, as a result of which--since such a ski is voluminous, in contrast to skiing on two separate skis--the danger of self-inflicted injury is increased.
The invention has set itself the object of avoiding these disadvantages and of creating a safety binding for sports items of the type mentioned at the beginning which makes it possible to set the release characteristic of the binding units in such a way that, if extraordinary forces occur, a reliable release of both of the user's ski boots or a detachment of the same from the sports item is ensured. In particular, it is to be ensured that, on release of the one ski boot, the other ski boot is also inevitably released.
This object is achieved according to the invention by providing a device wherein. In this, the control for the joint release of the two binding units is the same, the only difference being in the design of the sports item and in the use or non-use of a supporting plate.
The designs according to the invention make possible a free flexure of the sports item during descent, since the coupling parts are frictionally interconnected and thus relative movements between the sports item and its holding means can take place without neutralizing the holding forces for the ski boot. Due to the fact that both the dimensions and the pretensions of the springs for the holding means can be changed within broad limits, furthermore a good adaptation of the ski binding to the desired release values can be brought about. Since, after release of one of the ski boots or of one of the supporting plates by the one binding unit, the other ski boot or the other supporting plate is likewise released from the other binding unit by forced control (automatically), it is virtually impossible for the user to remain hanging on the sports item and thus the danger of injury is reduced considerably. Moreover, the stepping-in with the ski boots or supporting plates and the renewed fastening of the same at the binding units is simplified by the design according to the invention.
A preferred embodiment of the invention is defined by the features of claim 3. In this way, on the one hand a secure retention of the ski boot or of the supporting plate on the item is ensured and on the other hand--when the one ski boot or the one suppor
REFERENCES:
patent: 3764155 (1973-10-01), Perrgman
patent: 4652007 (1987-03-01), Dennis
patent: 4741550 (1988-05-01), Dennis
patent: 4792155 (1988-12-01), Besnier
Pfaffenbichler Peter
Szasz Tibor
Camby Richard
Kashnikow Andres
TMC Corporation
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