Land vehicles – Skates – Runner type
Patent
1980-10-21
1983-01-04
Peters, Jr., Joseph F.
Land vehicles
Skates
Runner type
280628, A63C 710
Patent
active
043669689
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a heel tightener for safety ski bindings comprising a boot heel-supporting turntable to which there are pivotally secured two pull members, one passing each side of the boot heel, which carry a sole retainer movable against the force of at least one spring, the heel tightener being associated with a ski stop.
Particularly the ski stop for such a heel tightener is shown in U.S. Pat. No. 3,917,297, whereas a heel tightener of the aforementioned kind, but without a ski stop, is for example described and illustrated in U.S. Pat. No. 4,035,001.
In the construction of U.S. Pat. No. 3,917,297, the ski stop is secured to the turntable. It comprises a braking plate which is hinged to and turns with the turntable and, for the purpose of braking the ski, is moved downwardly laterally past the ski under spring force. The braking plate is arranged in the front and/or rear region of the turntable. Swinging out of the turntable simultaneously permits the ski stop to become effective. In order that this may also be so upon release by a purely frontal fall, means are provided which, in the absence of the ski boot, turn the turntable laterally. When stepping into the binding, the turntable must be fixed and a slidable lock serves this purpose.
This construction is not only comparatively expensive and cumbersome to manipulate but also not certain to function because, after stepping into the binding, it is necessary to bring the slidable lock into its releasing position and if this is forgotten functioning of the ski stop is impossible upon release of the binding. For this reason, heel tighteners having such a ski stop have not proved practicable.
It is the object of the present invention to form and construct a heel tightener of the aforementioned kind such that it permits stepping into the binding particularly without prior manipulation and so that the ski stop automatically becomes ready for functional operation and will not detrimentally influence the function of the safety ski binding.
According to the invention, this is achieved by the characterising features of claim 1.
In a constructional embodiment of the invention, the lever may consist of an at least approximately L-shaped round wire of which the short limb forms the lever pivot engaging in the free end of the pedal that is formed as a bearing eye. This results in an economical embodiment which is simple to produce.
Desirably, the pivot shaft of the pedal is disposed between the turntable and the end of the ski. In this way one ensures that the braking skid will extend rearwardly, i.e. towards the end of the ski or at an acute angle thereto.
In a further development of this inventive concept, the pedal may have a locking arm extending beyond its pivot shaft. This locking arm serves to locate the pull elements and sole retainer on the ski when the ski boot is absent from the binding, which is particularly advantageous when transporting the ski. Preferably, the locking arm is in the form of a U-shaped wire frame and has its limbs longitudinally adjustably held on the pedal, which may even be necessary in those cases where the heel tightener of the invention but without a ski stop is only subsequently to be equipped with the ski stop.
If the pivot shaft of the pull members on the turntable is a central one or approximates to being central, the guide eyelet of the lever is preferably provided on the turntable.
A particularly simple construction is obtained if the spring is a coiled bending spring of which one limb acts on the pedal whereas the other limb serves as the base plate, and if the convolutions form the bearing for the pivot shaft.
In a development of the invention, the free end of the lever serving as a braking skid is cranked upwardly in respect to its inoperative position, thereby providing the advantage that, when the boot is inserted in the binding but the heel tightener is not yet closed, the latter is lifted by the cranked portion and can therefore be more easily closed.
Desirably, there are two levers so that, as is now
REFERENCES:
patent: 3917297 (1975-11-01), Fruh
patent: 4035001 (1977-07-01), Jungkind
patent: 4098110 (1978-07-01), Bowden
patent: 4227714 (1980-10-01), Riedel
patent: 4234206 (1980-11-01), Hofbauer et al.
Hannes Marker
Mar Michael
Peters Jr. Joseph F.
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