DE8701008U1 - ski - Google Patents

Description

&igr; ■»..-1., III ^ . .. _, J

TER meer'Müller''STieiNVEliT^R*: *#.' .* Fischer

SKI

The invention relates to a ski with a _rotatable rod arranged in its longitudinal direction with different bending behavior in different angular positions.

A ski of this type is known from DE-OS 14 78 ISS. This known ski has an embedded or attached, rotating rod with a flat, rectangular cross-section, which is flexible in the direction perpendicular to the wide sides, but essentially rigid in the direction perpendicular to the narrow sides. By rotating this rod, the ski can be set harder or softer and thus adapted to the skier's ability and the piste conditions. A rod of this type forces the ski into a completely straight shape in the harder or stiffer setting, while a certain curvature of the ski is generally preferred to adapt to uneven terrain and in the interest of better edge grip, especially on icy pistes and steep slopes.

There have therefore been attempts to change the tension in a ski by means of tensioning straps running lengthways along the ski, which tension the ski in the manner of an arch. In this context, reference is made to DE-OS's 27 36 908, 29 11 140 and 32 04 689 as well as DE-AS's 13 02 470 and 26 23 382. However, since such tensioning straps have to be guided inside the ski itself and can at best be moved as far as possible to the underside of the ski, the direction in which the tensioning straps apply force is extremely unfavourable, so that the desired result can only be achieved with very high loads on the tensioning straps.

TER MEER -MÜLLER'«STJEIN(V1EI?T^R·: 'U'"!* Fischer

The invention is based on the object of creating a ski of the generic type which offers the possibility of being able to adjust the ski to be harder or softer in a relatively simple and effective manner and, in particular, of pre-tensioning it in the harder position in the direction of curvature.

This object is achieved according to the invention in that

The rod can have a round cross-section and be arranged in a corresponding tubular guide channel inside the ski, but can also be mounted, for example, in suitable bearings on its surface. The guide channel can also have a flat box shape, the height of which essentially corresponds to the diameter of the rod, but the width of which allows the rod to be accommodated in a relaxed manner when the rod is pre-tensioned in an arc-shaped direction to the side.

The rod can be made of a fiberglass or carbon fiber material or of Kevlar.

A hand lever protruding from the ski can be connected to the rod at a suitable point, by which the rod can be rotated.

When the curvature of the bar points upwards, its two ends exert a downward force, which presses the front and rear ends of the ski onto the piste. The ski is thus pre-tensioned into a curved position. In the 180° rotated position, the front and rear ends of the ski are raised, so that the ski turns extremely easily, as may be desirable for trick skiing, for example. When the curvature of the bar is directed sideways, the bar behaves neutrally. Intermediate positions are possible.

TER meer ' möller < STgfNMEiäYö=?'? '*.' *" Fischer

In the following, preferred embodiments of the invention are explained in more detail with reference to the accompanying drawings,

Fig. 1 is a longitudinal section through a ski according to the invention;

Fig.* 2 shows a rod for adjusting the

nx,&mdash; · J=J _1 ii. J Γ·�Lgr;.± 1&mdash; J J

α lcl Liyjvci. l. ucs γλι xii cm-apamact

Position;
10

Fig. 3 is a cross-section through a ski according to the invention;

Fig. 4 is a cross-section through another embodiment of an inventive

moderate skiing.

A ski 10 shown schematically in longitudinal section in Fig. 1 is traversed longitudinally by a tubular guide channel 12 which begins near the front tip 14 of the ski and extends to its rear end 16. At the rear end 16, the guide channel 12 exits the ski 10.

Inside the tubular guide channel 12 there is a cylindrical rod 18 which is preformed into an arc shape in the relaxed position, as shown in Fig. 2. This rod can be made of a highly elastic, dimensionally stable material based on glass fiber or carbon fiber.

The rod 18 can be rotated in the guide channel 12. The guide channel can, for example, consist of a PVC pipe embedded in the ski. The rotation of the rod 18 can be carried out with the help of a handle 20 which is attached to the rod 18 and protrudes from the ski at a suitable point.

H ii Sl &igr; . » · 4 . ·

TER Meer-möller ^stöiNf^EiöTfeR". V ·' Fisuher

I)JJOJ)J 11 '·· · · ·

exit i However, a handwheel/hexagon head or the like can also be provided on the rear EMe 16 deö Ski on the end of the rod 18 exiting there.

The rod 18 has an arcuate pre-tension, as shown in Fig. 2. Depending on the rotational position of the rod, the front and rear ends of the ski are pressed downward, raised or left essentially unaffected .

10

The rod 18 can be pulled out of the guide channel 12, and can therefore be exchanged, so that rods with different physical properties can be used optionally.

15

Fig. 3 is an enlarged rear view of the ski according to Fig. 1. The rear end of the rod with the handle lever 20 can be seen.

Fig. 4 is a cross-section through a ski according to another embodiment of the invention. In this case, the guide channel designated 22 has a flat, horizontal box shape at least in the middle area of the ski 10, so that the rod 18 is essentially in the relaxed position in the horizontal position of the arch shape and a regression of the arch shape due to permanent loading is avoided.

The rod does not necessarily have to be in the longitudinal center axis of the ski. For example, it may be useful to

to move it towards the inside edge of the ski, since the inside edges of the skis are primarily used for edging on ice due to the usual, predominant load on the downhill ski.
35

A particularly wide adjustment range is achieved when

TER MEER · MÖLLER ·'

Fisherman

the ski is primarily designed to be torsionally rigid and not very flexurally rigid. In this case, the flexural rigidity results almost exclusively from the position of the rotating rod.

Claims (9)

TER MEER-MULLER-STEINMEISTER PATENT ATTORNEYS &mdash; EUROPE=AN PATENT ATTORNEYS j Dipl.-Chem. Dr. N. ter Meer Dipi.-lng- H. Steirimeister D.pl.lng. F. E. Müller Artur-Ladebeck-Strasse 51 Mauerkircherstrasse 45 D-8000 MUNICH 80 D-48OO BIELEFELD 1 . St/ri HERWIG FISCHER Obere Bergstrasse 17 5144 Wegberg SKI PROTECTION CLAIMS 1. Ski with a rotatable rod arranged in its longitudinal direction with different bending behavior in different angular positions / characterized in that the rod (.18) is braced in an arc-shaped manner - 2. Ski according to claim 1, characterized in that the rod (18) has a round cross-section. 10 l§ TER meer-Müller .6tpN*r^El5T^R" ¹ I ·..* .* Fischer &iacgr;5*ä 3. Ski according to claim 1 or 2, characterized in that the rod (18) is rotatably guided in a tubular guide channel (12). 4. SJci according to claim 1 or 2, characterized in that the guide channel (22) has a flat, horizontal box shape at least in the middle region of the ski. 5. Ski according to one of the preceding claims, characterized in that the rod (18) consists of glass fiber, carbon fiber or Kevlar material. 6. Ski according to one of the preceding claims, characterized in that a handle lever (20) which can be grasped from outside the ski is attached to the rod (18). 7. Ski according to one of claims 3 to 6, characterized in that the guide channel (12,22) formed by a PVC pipe embedded in the ski. 8. Ski according to one of the preceding claims, characterized in that the guide channel (12, 22) is arranged in the longitudinal center axis of the ski. 9. Ski according to one of the preceding claims, characterized in that the ski (10) has a high torsional rigidity and a low bending rigidity.