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Title:
SKI TRAINING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/069276
Kind Code:
A1
Abstract:
According to the presented invention, the ski training machine that can be used by skiers (S) to train in interior or open areas outside the ski slopes refers to a new product which allows the skier (S) to transmit movement signals through the carriage (1.4) that is supported by bearings on the frame (1) and via sensors (KT) to a PC (3) which processes these movements with PC-integrated software (3) transmitting them in image form to a TV screen (2). In his view (P), the skier (S) can look at the figure on TV screen (2) showing the dynamics of any chosen ski slope with poles (2.1) down which the skier skies (2.2) and controls the skier (2.2) by movement of the carriage (1.4), forces acting on the scales (V), foot pedal tilting motions (1.4.2), forces acting on the scales (1.4.2.5). Cylinders (VC) control the frame (1) and represent the ski run kinematics. The system is designed as a control loop, while the skier (S) must constantly adjust the orientation of the skier image (2.2) so that the latter is skiing on the selected ski run between the poles (2.1).

Inventors:
KLAMPFER DAMJAN (SI)
Application Number:
PCT/IB2018/057739
Publication Date:
April 11, 2019
Filing Date:
October 04, 2018
Export Citation:
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Assignee:
DAMJAN KLAMPFER S P (SI)
International Classes:
A63B71/06; A63B69/18
Domestic Patent References:
WO2001030464A12001-05-03
Foreign References:
DE19521619A11996-12-19
EP1510236A12005-03-02
KR20130078839A2013-07-10
US9079066B12015-07-14
US5147257A1992-09-15
Other References:
None
Attorney, Agent or Firm:
KETNER, LEGAL CONSULTANCY, REPRESENTATION AND PROTECTION, LTD (SI)
Download PDF:
Claims:
Patent claims

1. The ski training machine is characterised by consisting of the following subassemblies: a frame (1), a computer or PC (3), electrical connections (3.1) and (3.2), a power supply electrical connection (4), a TV (2) and battery (A).

2. The ski training machine is characterised by the claim 1, that the frame (1) consists of the following elements: a handlebar (1.1), a treadmill (1.2), bottom connection (1.3) and a carriage (1.4), while the method of construction is mechanical with detachable screw connections.

3. The ski training machine is characterised by the claim 2 that the handlebar (1.1) can be easily folded forwards or backwards in line with the complete assembly, or it can be simply screwed off.

4. The ski training machine is characterised by the claim 2 that the treadmill (1.2) can be straight or radially curved (R) with a radius measuring from 0 to 50cm.

5. The ski training machine is characterised by the claim 4 that the length of the treadmill (1.2) measures from 20 to 350cm.

6. The ski training machine is characterised by the claim 3 that the height of the handlebar (1.1) measures from 50 to 250cm.

7. The ski training machine is characterised by the claim 4 that the carriage (1.4) is installed on the treadmill (1.2), which may be connected with elastic bands (1.5) to the basic frame (1).

8. The ski training machine is characterised,by the claim 7 that the carriage (1.4) and the frame (1) can be connected with elastic bands (1.5) ranging from 0 to 15, i.e. the same number on the left and right side of the carriage (1.4).

9. The ski training machine is characterised by the claim 8 that the fixings of elastic bands (1.5) to the carriage (1.4) and the frame (1) are rigid and use custom technical solutions that are a known state-of-the-art that can always be different.

10. The ski training machine is characterised by the claim 1 that the basic floor plan dimensions of the frame (1) are as follows: width from 80cm to 350cm, length from 25cm to 200cm.

11. The ski training machine is characterised by the claim 2 that in all sections where it is in contact with the ground the frame (1) can be supported by scales (V) which measure static and dynamic forces are through the conductor (3.2) connected to the PC (3), while the power supply is provided via the PC (3) from the conductor (3.2), the envisaged measuring range of a scale (V) is from 5 to 5000 N, the distribution or tolerance of the measurement is from 0.01 to 2 N, and the force measurement is constantly and continuously transmitted by the scale (V) to the PC 3 via and electrical conductor (3.2).

12. The ski training machine is characterised by the claim 2 that the frame (1), regardless of whether it has already been supported with scales (V) or not, may in all sections where it is contact with the ground also be supported with pneumatic or hydraulic cylinders (VC) that lift or lower the frame (1) according to cylinder controls (VC) which is performed by the PC (3) through conductors (3.2) and pressurised medium storage unit (PM).

13. The ski training machine is characterised by the claim 12 that cylinder stroke ranges from 5mm to 500mm.

14. The ski training machine is characterised by the claim 12 that the pressure of the pressurised medium storage unit (PM) ranges from 0.1 to 500 bar, while capacity is from 0.000 lm3/min to 20m3/min regardless to which medium is used, while the pressure and capacity are controlled with the PC (3) or the SW installed in the PC (3) through an electrical connection (3.2).

15. The ski training machine is characterised by the claim 4 that to the left and right from the centre on the treadmill (1.2) along the length from 10cm to 170cm there are installed sensors (KT) that can be continuous or discontinuous.

16. The ski training machine is characterised by the claim 15 that individual contacts between discontinuous sensors (KT) must be installed at a distance from 1mm to 5mm if we select discontinuous sensors (KT).

17. The ski training machine is characterised by the claim 2 that a carriage (1.4) is installed on the treadmill (1.2) so that the upper wheels (1.4.1) of the carriage (1.4) run on the flange (1.2.1) which is fixedly mounted to the treadmill (1.2), while the bottom wheels (1.4.2) run on the bottom part of the treadmill (1.2).

18. The ski training machine is characterised by the claim 17 that the carriage (1.4) is supported by bearings on the treadmill (1.2) through four upper wheels (1.4.1) which are supported by a pivoted bearing support on the axles (1.4.1.1) and via two bottom wheels (1.4.2) that are supported by a pivoted bearing support on axles (1.4.2.1).

19. The ski training machine is characterised by the claim 18 that the upper wheels (1.4.1) are cambered and manufactured from elastic polymer with a hardness of 50 to 400 Shore.

20. The ski training machine is characterised by the claim 18 that the upper wheels (1.4.1) are cambered and manufactured from elastic polymer with a hardness of 50 to 400 Shore.

21. The ski training machine is characterised by the claim 18 that the lower wheels (1.4.2) are are mounted on the lower part of the carriage (1.4.3) via the axle (1.4.2.1) on which the nut is screwed through a vertical groove which is built in the lower part of the carriage (1.4.3).

22. The ski training machine is characterised by the claim 18 that the upper wheels (1.4.1) are cambered and manufactured from elastic polymer with a hardness of 50 to 400 Shore.

23. The ski training machine is characterised by the claim 17 that foot pedals (1.4.2) that are fitted for left and right skier's leg (S) can be additionally installed to the carriage (1.4).

24. The ski training machine is characterised by the claim 23 that the foot pedals (1.4.2) have a pivoted bearing support centrally with a bolt (1.4.2.1) that enables foot pedal (1.4.2) movements in direction (SN).

25. The ski training machine is characterised by the claim 24 that springs (1.4.2.2) can be installed as support underneath the foot pedals (1.4.2) that are supported by the brackets (1.4.2.2.1) on the underside, and the foot pedal (1.4.2) on the top side.

26. The ski training machine is characterised by the claim 23 that the sensors (1.4.2.4) are

installed under the foot pedal (1.4.2) which record the movements of the foot pedal (1.4.2) in the direction (PS).

27. The method of use of the ski training machine is characterised by the claim 26 that the extension (1.4.2.3) of the foot pedal (1.4.2) or its varying position provides information on the position of the foot pedal (1.4.2) to the sensor (1.4.2.4).

28. The ski training machine is characterised by the claim 27 that the sensor (1.4.2.4) can be continuous or discontinuous - of the stepper type and in case it is of the stepper type/discontinuous the distance between sensor contacts (1.4.2.4) ranges from 0.2 to 5mm.

29. The ski training machine is characterised by the claim 23 that scales (1.4.2.5) can be installed on foot pedals (1.4.2) which record forces of mass and pressures of the skier's leg (S), while force signals and change of force per unit of time is sent to the PC (3).

30. The method of use of the ski training machine is characterised by the claim 29 that the scales (1.4.2.5) record forces from 5 to 5000 N, while the distribution or tolerance of the measurement is from 0.01 to 2 N.

31. The method of use of the ski training machine is characterised by the claim 30 that the scales (1.4.2.5) continuously transmit measurements of forces to the PC (3).

32. The ski training machine is characterised by the claim 1 that a winding slide chair (DN) is mounted on the carriage (1.4) which generates magnetic flux through the movements of the carriage (1.4) in the directions of the movement sensor (SG) that is accumulated in the battery (A) which can be a standalone unit or an integral part of the PC (3).

Description:
Ski training machine

BACKGROUND

[0001] The subject of the invention is the technical system which enables training of ski techniques and maintaining of physical fitness in interior or open spaces without the ski equipment.

BRIEF SUMMARY OF THE INVENTION AND RELATED ART

[0002] It consists of a frame on which the skier/trainer stands and moves, a TV screen, a computer with keyboard and connections and software (hereinafter referred to as: SW), which connects the sensors fitted on the framewith the ski run track that is selected in the software - electronic form. The system includes or determines the movements and kinematics of the trainer/skier and displays the figure of the skier on TV screen or ski run track via the PC (SW). In this way, the trainer/skier can actively navigate through the selected ski run withe movements of the so-called trolley or carriage which is mounted on the system support frame.

The system as described is designed for training of specific movement patterns of trainers/skiers, familiarisation of trainers/skiers with different ski run tracks and terrains which are included through the PC software.

In addition, it is also intended for general therapeutic stretching exercises and as a game device.

The invention as described hereby resolves the issue that the user - skier can practice skiing through between poles of different selected tracks and varied selected terrains in different selected weather conditions, which is in its entirety included as SW or PC variables.

Similar systems are, as public goods or patents, already known, but are primarily used in gaming and as car, motorcycle driving simulators or similar. [0003] The following related patents can be found in the SIPO database, namely: Patent: Balance board with electrical stimulator

Application No.: 201000155

Application date: 24/5/2010

The balance board with electrical stimulator is compact and easy to use and allows performance of numerous dynamic balance exercises using electrical stimulation of the soles of the feet. The device consists of the basic board with two pairs of built-in electrodes and an electrical stimulator. The desired frequency and amplitude of stimulation of the soles of the feet can be easily set up using the electrical stimulator. The device can be used as a training machine in medicine, rehabilitation procedures and preventive sports training.

This invention uses a technique for data excitation using electrical impulses and is

technically that is designed in a different manner than our invention.

Patent: Movement simulator

Application No.: 200800327

Application date: 31/12/2008

This patent shows a movement simulator consisting of a seat which is mounted on four extendable telescopic legs that are extended when the device is used, but otherwise they are folded, and can thus also be used as an armchair. The front bottom side of the device is fitted with an extendable pedal holder, and a mobile mounting bracket for a keyboard and monitor above the backrest, while the compartment under the seat is fitted with a compressor station with cylinder-controlling valves and a central computer unit controlling device to ensure the movement of the above cylinders. This invention utilises the technical invention of controlling telescopic legs of the seat on which the user sits and controls it. This patent is designed just the other way round to our presented invention, since the user controls the seat on which he or she sits through movements of arms and legs.

This patent uses technical inventions that are completely different to our presented invention which controls the on-screen figure of the skier.

Patent: Rowing technique training system

Application No.: 201100243

Application date: 4/7/2011

The patent presents the invention system for training of techniques of the locomotor system in sports, preferentially rowing, or for rehabilitation of persons in order to maintain and restore their movement and functional abilities, which is comprised of a device for carrying out movement, preferentially rowing training exercises, such as the rowing simulator which is of any known type, while it may also be a boat; of detection and measurement meters for detecting and measuring forces and motion, as well as inertia sensors that are mounted on the device and applied to the person performing the exercises, a processing unit for processing measured and previously entered values and the devices for displaying information to the person.

Primarily, this patent deals with the measurement of forces of the trainer and does not condition the exercising mode with a preset track or withdrawal of oars which is the basic technical invention of the invention presented herein.

In addition, it also uses technical solutions that are completely different to our presented invention, therefore there are no common technical characteristics with the presented invention. Patent: Haptic driving simulator

Application No.: 201300212

Application date: 2/8/2013

This patent deals with the technical invention of a vehicle driving simulator, in particular a land vehicle, for which it is typical that it summarises head-up display helmet information or information obtained from a similar head-up display device, while the user sits in the seat. For helmet movements, the simulator generates acceleration levels.

This patent deals with completely different technical inventions to the above -presented invention and is completely different from the presented invention.

Patent: Free fall simulator

Application No.: 200330191

Application date: 4/9/2003

This patent deals with technical inventions that are completely different from our presented invention.

The patented inventions listed above use technical solutions/inventions that are completely different from our proposed invention.

In addition, the proposed invention is different from the inventions presented above, particularly in that it also summarises the on-screen on-track information for the trainer/skier and the latter then reacts and performs a movement to use such motions in a specific order, and attempts, via a mechanical system with built-in sensors, to successfully control the skier on screen, to keep him on the SW-defined track. DETAILED DESCRIPTION OF THE INVENTION AND BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The said invention is described in detail below with the description of the case and the submitted figures which show the following:

Figure 1 : The entire system with all the components necessary for functioning of the entire system which also displays the skier/trainer, hereinafter referred to as - the skier.

Figure 2: Elevation view of the so-called skier's carriage or standing position. Figure 3: Side view of the so-called skier's carriage or standing position. Figure 4: Detail B of the skier's carriage

Figure 5: Cross-section C-C of detail B showing the set-up and carriage wheel movement on the holder.

The invention as described, which is presented with this patent application, replaces the active ski training exercises so that the skier does not need any skiing equipment, while the training can also be performed in indoor rooms with a floor plan of at least 2 x 3m.

It can be used in apartments, public places (fitness centres, hotels, ski schools, academies, etc.), courtyards or outdoors without any limitation except for a 220V power supply connection which is required for PC power supply.

The complete technical system consists of a frame 1, a TV 2, a PC with a keyboard and installed software 3, signal connections 3.1 and 3.2 and a power cord 4.

The frame 1, which is in technical terms the most important part of the invention, consists of a handlebar 1.1, a curved treadmill 1.2 with an R radius, bottom connection 1.3 to which rubber elastic bands 1.5 that are connected to the carriage 1.4, are tensioned.

The handlebar 1.1 is screwed onto the frame 1 so that it can be easily folded forwards or backwards in the direction of the centreline of the frame 1 or unscrew it in its entirety for transport purposes. Screw connection is carried out in terms of known and possible technical methods which, however, are not subject of this invention.

The skier S stands on the carriage unit 1.4 and holds the handlebar 1.1. Through the signal connection 3.1 the SW-installed PC sends a moving image/film with the figure of the skier 2.2 on the selected track that is recorded in the PC-linked SW to TV 2 where it is displayed as a 2D- or 3D-film. The TV, i.e. TV screen 2 can also function as a projector or any other visualisation device. In addition, the PC 3 also processes audio signals that simulate the skier skiing on snow, icy terrain, etc. via software - hereinafter referred to as SW - that is installed on the PC 3 on the basis of input data generated by the skier and which are acquired via sensors KT and 1.4.2.4, and scales V. The PC 3 also processes this audio signal through signal connections 3.1, on display unit 2 which may be a TV screen, projector or any similar device. The display and audio unit 2 will in the continuation be defined as TV 2

The skier S skiing in the direction P observes the image on TV 2 which displays the ski run with poles 2.1 and the figure of the skier 2.2 skiing between poles in a certain direction. With leg movement, the skier S moves the carriage 1.4 left or right in the any direction recorded by the movement sensor (SG). The carriage 1.4 is held in the centre of the treadmill 1.2 by pretensioned elastic bands 1.5 that are clamped fixed to the carriage 1.4 and through the bottom connection geared system 1.3. Depending on the complexity of the track and the skier's weight S you can clamp from 0 to 15 elastic bands 1.5 to the carriage 1.4 and in this way adjust the pretension of the carriage according to the complexity and weight. The elastic bands 1.5 can be tensioned from 0 to 500% of the elastic band length 1.5.

The skier S moves the carriage 1.4 in the direction of the movement sensor and in this way triggers continuous contacts KT which measure the deviation of the carriage 1.4 from the centre of treadmill 1.2.

The contacts KT may be continuous or discontinuous. In the case that the contacts (KT) are discontinuous they are carried out as a stepper motor. That is, they are distributed by length, partially, and moved as close as possible to each other, to form an approximation of the continuous contacts, and thereby enabling as fine-tuned carriage 1.4 movement information as possible. If discontinuous contacts are used, they are fitted at a distance between 1 and 5mm along the length of 10 to 170cm from the treadmill centre 1.2 on both sides.

V In the case of selection of continuous contacts (KT) (such as a potentiometer) they are fitted from continuously from the treadmill centre 1.2 from 10 to 170cm on the left and right side of the tread line 1.2.

The carriage 1.4 in a specific position on the ski run 1.2 electrically triggers specific contacts KT which transmit signals to the PC which through the SW converts them to change of movement of the on-screen skier image 2.2 on TV 2.

When a skier S receives information through the view P on the next position of the on-screen skier image 2.2 on TV 2 according to the poles on the ski run 2.1 , they then decide on the movement to the left or right which they carry out with leg movement and consequently the movement of the carriage 1.4 on the treadmill 1.2. The carriage 1.4 is in the next position on the treadmill 1.2 and triggers the appropriate contacts KT that determine this position.

The contacts KT resend the signal via signal connections 3.2 to the PC which using the SW sends the next image through signal connection 3.1 with the new position of the on-screen skier figure 2.2 on TV 2. With the view P, the skier S processes the new image and triggers movements of the carriage 1.4 on the tread line 1.2 by leg movement. This way the control loop is closed and the process continuous until the training exercise is performed.

The skier S gradually acquires experience and increasingly better and faster adjusts the position of the carriage 1.4 on the treadmill 1.2 according to the SW which dynamically displays the skier image 2.2 which the skier S actively controls on the ski run with poles 2.1.

The SWs may include all the known and unknown ski runs/ski slopes. The speed of the skier image 2.2 can be adjusted accordingly in the relation to the complexity using the SW.

A regular TV can be used as TV 2, while signal connections 3.1 and 3.2 are known state-of-the-art and are not dealt with separately in this invention. The PC is connected through the power cable to a 220V or 230V grid or a battery housed in the PC or an external battery A.

The presented invention, if it is provided with a built-in winding slide chair DN and a battery A, it is also designed for so-called self-sustaining operation. For the purpose of self-sustaining operation, a winding slide chair DN is mounted on the carriage 1.4 which generates magnetic flux through the movements of the carriage 1.4 in the direction of the movement sensor (SG) that is accumulated in the battery A which can be an integral part of the PC or a separate standalone unit. The conversion of kinetic energy through an electric winding - coil, or a winding slide chair DN which moves over the core unit that is in this case a treadmill 1.2, is a known state-of-the-art that as of now has not been used for this purpose. Furthermore, the storage of this converted energy in batteries is also a known state-of-the-art. The frame 1 can be directly set on the training area floor directly or through the scales V which measure the mass of the entire system together with the skier S. In addition, the scales V also measure the impulses of forces generated by the movements of the skier S or the carriage 1.4 on the treadmill 1.2. These impulses of forces and mass of the skier S can be transmitted from the PC with installed SW which can enable even more sophisticated controlling of the skier 2.2, as it obtains data on the acceleration levels of the carriage 1.4 in the direction of the movement sensor SG and in the longitudinal direction if there are at least three scales and according to the weight of the skier S.

If you want to measure acceleration/deceleration levels in the longitudinal direction too, or in the direction perpendicular to the direction of the movement sensor SG, the frame 1 must be supported by at least two scales V on the left and the right side in the direction of the movement sensor SG and at least one scale V front or rear. However, the frame 1 can be supported by four scales V, i.e. for each corner of the frame 1.

Each scale V records forces from 5 to 5000N, while the distribution or tolerance of the measurement is from 0.01 to 2N. The force measurement is constantly and continuously transmitted by the scale V to the PC 3 via an electrical conductor 3.2.

Via a respective conductor 3.2, the scales V have electrical connections to the PC 3. In addition, the scales V are powered by the PC via the conductor. The scales V measure static and dynamic forces generated in the area of scales V between the frame 1 and the ground, and these data are continuously transmitted to the PC 3 via the conductor 3.2. The scales V, if they are selected as an option, are generally installed at all points where the frame 1 is in contact with the ground and continuously measure static and dynamic forces, and continuously transmit these data to the PC 3.

It is understandable that there must be a distance between support points of the frame so that the frame 1 does not tip over due to the shock movements of the skier S. The indicative dimensions of the floor plan are as follows: width from 80 to 350cm, length from 25 to 200cm. The height of the frame 1 or of the handlebar 1.2 is from 50 to 250cm.

The treadmill 1.2 can be designed in a straight line or in a curvature with a radius R from infinity to min. 50cm. If the treadmill 1.2 is straight or designed with a large radius R, the elastics 1.5 take on a greater part than in the case where the treadmill 1.2 is designed with a radius R. In the case that the treadmill 1.2 is designed with a radius R, the skier S receives similar responses of the frame 1 as in the real ski run track, since they also move in the direction of the vertical.

The length of the treadmill 1.2 measures from 20 and 350cm.

Depending on the mass/weight of the skier S, we can select how many elastic bands 1.5 will be clamped to the carriage 1.4. The number of elastic bands ranges from 0 to 15 on each side (left and right). They can be pretensioned

0 up to 500% of elastic band length.

In addition to the weight of the skier S, the number of elastic bands 1.5 is also determined by the selection of the ski run or type of snow. If wet snow is selected in the SW, more elastic bands 1.5 must be clamped to the trolley 1.4 and vice versa.

The scales V, if the frame is equipped with them, transmit signals to the PC via a signal connection 3.2, and the SW converts them into an image that it sends through signal connection 3.1 to TV 2 displaying the movement and signals of the skier S transformed into the skier image 2.2.

V If the data of the scales V are also included, we can create a much more sophisticated SW program that provides a much more realistic visualisation of the actual movement of the skier S.

The scales V may also be equipped with air or hydraulic cylinders VC that raise or lower the frame 1 in relation to the control of the cylinders VC.

V If built-in cylinders VC that can be pneumatic or hydraulic are fitted, you can additionally change or control the frame 1 using the SW installed on the PC 3 according to the ski run and its complexity that is set in the SW.

The cylinder VC stroke ranges from 5mm to 500mm.

V However, if built-in pneumatic or hydraulic cylinders are fitted, the entire assembly must be equipped with a pressurised medium storage unit PM which ensures the necessary pressure of the medium which is from 0.1 to 500 bar, and a capacity ranging from 0.0001m 3 /min to 20m 3 /min either for air, oil or any other medium. The pressure and capacity of the pressurised storage unit PM are controlled via PC 3 through electrical connections 3.2 and software loaded on it.

An additional option is the mounting of the special foot pedals 1.4.2 on the carriage 1.4 which are installed on the left and right leg of the skier S. The foot pedals 1.4.2 are centrally supported by pivoted bearing support with a bolt

1.4.2.1 , which allows movements of the foot pedal 1.4.2 in the direction of the SN.

Springs 1.4.2.2 can be installed as support underneath the foot pedals 1.4.2 that are supported by the brackets 1.4.2.2.1 on the underside, and the foot pedal 1.4.2 on the top side. The springs have the task of creating a reaction on the force generated by the skier S during training exercise. The sensors 1.4.2.4 recording the movements of the foot pedal 1.4.2 in the direction of the PS are installed underneath the foot pedal 1.4.2. The extension 1.4.2.3 of the foot pedal 1.4.2 or its constantly varying or changing position towards the sensors 1.4.2.4, continuously provides information on the position of the foot pedal 1.4.2 to the sensor 1.4.2.4. The sensor 1.4.2.4 can either be continuous or discontinuous - stepper type. If it is of the stepper type, i.e. discontinuous, the distance between sensor contacts 1.4.2.4 ranges from 0.2 to 5mm.

For an even more sophisticated training exercise or a more realistic feel, scales 1.4.2.5 can be installed onto foot pedals 1.4.2 which record the forces of mass and the pressures of the skier's leg. The force signals and the signals of force change per unit of time are transmitted to the PC 3, which converts them to changes of skier's image on TV screen 2 according to the selected SW.

The scale 1.4.2.5 records forces from 5 to 5000N, while the distribution or tolerance of the measurement is from 0.01 to 2N. The force measurement is constantly and continuously transmitted by the scale 1.4.2.5 to the PC 3.

The foot pedal 1.4.2 tilt angle and the recording of the force of the pressure of the skier's legs S provides data through the scales 1.4.2.5 on the basis of which the SW can perform calculations and process this data as correct, a less correct turn in terms of correct use of the ski edge during the cutting technique, which will result in the acceleration of the on-screen figure of the skier 2.2 on the screen 2. In this way, we achieve more accurate learning of skiing S and, consequently, better results in relation to the selected ski run track and the conditions that we are setting up via PC 3.

The correct tilt angle means:

1. sufficient tilt on both foot pedals

2. foot pedal tilt parallelism

3. the correct distribution of pressure on foot pedals

The carriage 1.4 is supported by bearings on the treadmill 1.2 through four upper wheels 1.4.1 which are supported by a pivoted bearing support on the axles 1.4.1.1 and via two bottom wheels 1.4.2 that are supported by a pivoted bearing support on axles

1.4.2.1.

The upper wheels 1.4.1 of the carriage 1.4 run on the flange 1.2.1 which is fixedly mounted to the treadmill 1.2, while the bottom wheels 1.4.2 run on the bottom part of the treadmill 1.2.

The upper wheels 1.4.1 are cambered and manufactured from elastic polymer with a hardness of 50 to 400 Shore which dampen vibrations and run along the groove 1.2.1 of the treadmill 1.2.

As a rule, the lower wheels 1.4.2 have a cylindrical shape and are made of a similar material with a similar hardness than the upper wheels 1.4.1.

The lower wheels 1.4.2 are mounted on the lower part of the carriage 1.4.3 via the axle 1.4.2.1 on which the nut is screwed through a vertical groove which is built in the lower part of the carriage 1.4.3. For this reason, height or consequently axle distance 1.4.1.1 can be adjusted with the vertical motions of the axle 1.4.2.1 in order

1.4.2.1 , to achieve a closely parallel running of the upper wheels 1.4.1 and the lower wheels 1.4.2 on the treadmill 1.2. Closely parallel running is important because of the responses that the skier S receives through his/her legs from the trolley 1.4.

Sensors KT are optionally installed on the treadmill 1.2 and in all known manners, therefore this is not the subject of this invention.

Furthermore, the complete frame 1 construction which is usually assembled so that it can be easily disassembled and transported with a car is also not the subject of the present invention. Method of frame construction 1 is a known state-of-the-art, whereby we use screws, bolts, etc.

Installation of elastic bands 1.5 is also a known state-of-the-art and is not the subject of this invention. However, it is important that you can detach and clamp on the carriage 1.4 any given number of elastic bands 1.5 as envisaged, i.e. from 1 to 15 elastic bands per one side of the carriage 1.4. The number of elastic bands 1.5 and the pretensioning of elastic bands 1.5 is always equivalent on the left and right side of the carriage 1.4 in order to obtain a symmetric position of the unladen carriage 1.4.

The elastic bands 1.5 can optionally also be pre-tensioned which is facilitated with known technical solutions that are not the subject of this invention. However, it is important that the envisaged number of elastic bands is 15. From 0 to 500% of the elastic band length 1.5.