Land vehicles – Skates – Runner type
Reexamination Certificate
1999-11-29
2001-04-17
Dickson, Paul N. (Department: 3618)
Land vehicles
Skates
Runner type
C280S602000, C280S618000
Reexamination Certificate
active
06217055
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a ski equipped with an interface device provided for supporting boot retaining elements.
2. Description of Background and Relevant Information
As known, a ski is formed as an elongate beam which supports, in its central part, the boot and the elements for retaining the boot on the ski.
During gliding, the ski is deformed depending on the terrain and the skier's supports. The ski bends along a curvature which depends on the rigidity of the ski, particularly in turns.
The parameters affecting the ski deformation are its side cuts, the internal ski structure, as well as its curve thickness, the installation of retaining elements and, if necessary, the interface device which is inserted between the retaining elements and the ski.
The retaining elements and the insert interfaces stiffen the ski zones that support them. As a result, they create hindrances in the normal bending of the ski which are felt through abrupt curvature variations in the deformation curve of the ski and through curvature breaks in the distribution curve of ski pressure on the snow. These pressures can adversely impact the behavior of the ski depending on their location and the phase of the turn in question.
This is felt particularly with current skis having a wasp-waisted side cut that is very pronounced. As a matter of fact, in turns, such a ski bends, the running edge on the inside of the turn grips the snow and digs a sort of furrow which determines the ski trajectory. It is therefore advantageous to control the curvature of the ski and the running edge in the different phases of a turn.
SUMMARY OF THE INVENTION
One object of the invention is to improve the control of the behavior of a ski on snow, mainly in the phases of a turn.
Another object of the invention is to propose a device which is simple to build.
Other objects and advantages of the invention will appear throughout the following description.
The ski forms an elongate beam along a longitudinal direction and has a sole, an upper surface and lateral sides. It is overhung, in its central part, by a raised rigid platform, the platform having, in its upper part, mounting zones provided for the boot retaining elements. The platform of the ski has a front plate and a rear plate which have, at their lower part, lateral side edges with support surfaces. Beneath the area of the upper surface of the ski, the ski has bottom surfaces located opposite the support surfaces. The support surfaces and the bottom surfaces are predetermined such that when the ski is at rest, the platform bears on the ski in the area of the median part of the platform, and the distance between each support surface and its bottom surface progressively increases in the direction of the ends of the plates, such that the surfaces progressively come into contact with one another as the ski bends.
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Dickson Paul N.
Fischmann Bryan
Greenblum & Bernstein P.L.C.
Salomon S.A.
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