Safety binding for alpine skis

Details Safety binding for alpine skis Safety binding for alpine skis

1992-06-05

1994-06-28

Camby, Richard M.

Land vehicles

Skates

Runner type

280607, A63C 710

Patent

active

053240626

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to an alpine ski binding designed to hold the rear end of a boot in place on a ski.


BACKGROUND OF THE INVENTION

Numerous rear bindings of this type are currently known. They generally comprise a slide-rail mounted on the ski, a body which can slide along the slide-rail, and a boot position-retention jaw carried by the body. The bindings also comprise a support plate on which the rear end of the sole of the boot rests.
A brake is normally connected to the rear binding to stop the travel of the ski after the boot has been released. This brake generally comprises mobile brake arms or spade-like elements and a control pedal.
For some conventional bindings, the support plate for the boot is constituted by the brake control pedal.
In currently-known devices and in the presence of the boot, the support plate rests directly against the upper surface of the ski, so that the sole of the boot is supported directly on the ski, i.e., with no shock-absorption mechanism.
Accordingly, the shocks and vibrations to which the ski is subjected are transmitted to the boot and are felt by the skier.
To improve the skier's comfort, conventional practice includes, as described in particular in French Patent No. 2 602 979, a binding mounted on a ski by means of a plate made of a viscoelastic material, so that no rigid means, such as a screw, attaches the ski to the slide-rail.
As regards comfort, this binding gives good results. In fact, the layer of viscoelastic material absorbs the shocks and vibrations to which the ski is subjected.
On the other hand, this binding causes impairment of the accuracy with which the ski is steered. In fact, to steer the ski, the skier performs lateral maneuvers or driving movements with his boots, and these movements are transmitted to the edges of each of the skis. These maneuvers and driving movements are also filtered out by the layer of viscoelastic material.


SUMMARY OF THE INVENTION

One of the objects of the present invention is to propose a binding which remedies this disadvantage and which provides both comfort and a high level of steering precision.
Another object of the invention is to propose a binding whose construction is simple and inexpensive.
Other objects and advantages of the invention will emerge from the following description.
The alpine ski binding according to the invention is designed to hold the rear end of ski boot in position. Comprises a body attached to the ski, a device holding the rear end of the boot in position and carried by the body, and a plate supporting the boot, on which the rear end of the sole rests in the normal position in which the boot is held in place in the binding.
The boot-support plate is mobile in the median vertical, longitudinal plane of the ski, and a layer of an elastically-compressible material is interposed between the support plate and the upper surface of the ski.
According to a first embodiment of the invention, the body of the binding is mounted so as to slide along a slide-rail. The support plate is extended rearward by two arms, each of which is jointed to the stirrup piece which holds the rear part of the slide-rail against the ski.
According to a variant, the arms extending the support plate rearward are jointed around a horizontal, transverse axis carried by the slide-rail.
According to another variant, the support plate is jointed around a horizontal, transverse axis carried by the body of the binding.
According to a variant application of the invention, the ski binding is equipped with a brake, and the support plate constitutes, the base of the brake to which the brake arm and control pedal in particular are jointed.
According to another embodiment of the invention, the support plate comprises two elements arranged on either side of the median vertical, longitudinal plane of the ski. The two elements are jointed rotationally around a common horizontal, transverse axis. Coupling means, such as a pin, make it possible to connect the free ends of each of the elements.
According to a fu

REFERENCES:
patent: 4239256 (1980-12-01), Krob et al.
patent: 5118128 (1992-06-01), Piegay et al.
patent: 5158317 (1992-10-01), Sedlmair et al.

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