Land vehicles – Skates – Runner type
Reexamination Certificate
1997-11-24
2001-08-07
Olszewski, Robert P. (Department: 2167)
Land vehicles
Skates
Runner type
C280S607000
Reexamination Certificate
active
06270108
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a ski, such as an alpine, cross-country, or monoski, or a ski for snow surfing. More specifically, it concerns an improved version of these types of skis.
BACKGROUND OF THE INVENTION
Ski bodies are conventionally manufactured using a more or less flexible structure.
Various types of skis are currently known, and a very large number of variants exist. These skis are formed using an elongated beam whose front end curves upward so as to constitute a tip; similarly, the rear end is slightly curved so as to create the heel.
Present-day skis normally possess a composite structure in which different materials are combined in such a way that each comes optimally into play, in consideration of the distribution of mechanical stresses when the ski is being used. Thus, the structure generally comprises peripheral protective elements, interior resistance elements which withstand flection and torsion stresses, and a core. These elements are assembled by bonding or injection and assembly takes place under heat in a mold incorporating the final shape of the ski, which a comprises a sharply-raised front part forming a tip, a slightly-raised rear part forming a heel, and a central arched part.
Despite the concern of the manufacturers to make high-quality skis, ski makers have, to date, not produced a high-performance ski which proves satisfactory under all conditions of use.
Present-day skis exhibit a number of disadvantages, in particular poor performance during oscillations caused by vibrations or ski flexion. In fact, persistent vibrations cause a loss of gripping action and thus, poor ski behavior. It thus becomes important to damp vibrations, and solutions have been proposed. We indicate, for example, the solutions offered in French Patent Applications Nos. 2 503 569 and 2 575 393. However, these damping devices actually produce only slight effects of which the skier is unaware.
SUMMARY OF THE INVENTION
The present invention is designed to solve the various above-mentioned difficulties and proposes an especially simple, effective, and reliable solution of problems of vibration damping.
Accordingly, the device according to the invention designed to damp the vibrations of a ski is formed by at least one flexible strip connected to the ski using a rigid connection means and at least one flexible means, these means being spaced apart longitudinally on this strip.
According to complementary features, the flexible strip comprises, mounted on at least one of its ends, a flexible connection means and, on the other of its ends, a rigid connection means.
According to a special arrangement, the flexible strip is a strip made of aluminum or a composite material.
The invention also concerns a ski equipped with a device according to the invention.
According to specific arrangements, the flexible strip is fastened to the upper surface of the ski or attached within its structure.
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Le Masson Jacques
Phelipon Axel
Fischer Andrew J.
Greenblum & Bernstein P.L.C.
Olszewski Robert P.
Salomon S.A.
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