EP2953694A1 - Secure attachment of a shoe on a ski - Google Patents
Secure attachment of a shoe on a skiInfo
- Publication number
- EP2953694A1 EP2953694A1 EP13818762.0A EP13818762A EP2953694A1 EP 2953694 A1 EP2953694 A1 EP 2953694A1 EP 13818762 A EP13818762 A EP 13818762A EP 2953694 A1 EP2953694 A1 EP 2953694A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ski
- control circuit
- parameter
- progression
- skis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/0802—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings other than mechanically controlled, e.g. electric, electronic, hydraulic, pneumatic, magnetic, pyrotechnic devices; Remote control
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/081—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with swivel sole-plate
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/082—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with swivel heel-plate
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
- A63C9/088—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
- A63C2203/18—Measuring a physical parameter, e.g. speed, distance
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
- A63C2203/24—Processing or storing data, e.g. with electronic chip
Definitions
- the invention relates to a device for securely fastening a boot on a ski.
- the bindings of shoes allow a reliable and removable fastening of a shoe on a ski.
- the separation between the boot and the ski is performed either voluntarily by the user by a mechanical means, or involuntarily in particular when certain forces greater than a predefined threshold are applied to at least one of the elements of the binding, for example in case of skier falling.
- the predefined threshold of the forces beyond which the shoe disengages from the ski (or loosens) is generally adjustable according to the weight of the individual, his skill level, his physical condition, etc.
- non-triggering is the main cause of knee sprains.
- the most common conventional fasteners include a heel and a front stop, the heel pressing on the heel of the shoe, thus pressing the shoe against the front stop.
- the jaws of the heel and / or of the front stop automatically open or tilt under the effect of forces greater than a predefined threshold in order to release the shoe. It is therefore a purely mechanical means implemented for example with the aid of simple springs.
- the patent application FR 2 874 833 describes in particular a ski boot binding which improves the safety of the bindings by proposing a heel piece comprising a means for facilitating the rotation of the heel of the boot along a vertical axis by limiting the frictional resistance of the shoe. the sole of the shoe on the binding.
- the binding must be properly adjusted according to parameters specific to the skier and likely to change over time (weight of the skier, level of skill, physical condition, etc.).
- US Pat. No. 6,007,086 proposes a ski boot binding device whose purpose is to overcome these disadvantages.
- Said device comprises in particular a system for attaching a boot to a ski using electromagnets and a processor configured to communicate with said fixing system.
- This device makes it possible to separate the boot from the ski when forces greater than a predefined threshold are identified by the processor.
- this device can be completed by a transmitter placed at the front of a first ski and a receiver placed in the same manner on a second ski, each of the skis comprising a transmitter / receiver assembly in communication with the processor.
- the transmitter of a first ski sends a signal to the receiver of the second ski, the signal being in the form of a unidirectional arc.
- the processor sends a disconnection signal to the fixing system.
- a disconnection signal to the fixing system.
- this device has the major disadvantage of inducing a fallout in non-risky situations or when a pile of snow between the skis momentarily interrupts the signal. Conversely, this system induces a fallout too late in risk situations.
- a secure fastening device of a boot on a first ski comprising:
- an attachment member of the boot on the first ski configured to facilitate the separation between the boot and the first ski on receipt of a disconnection signal
- control circuit configured for:
- control circuit is configured to:
- control circuit is configured to:
- the first and second reference directions correspond to magnetic north.
- control circuit is configured to evaluate the speed of movement of the first ski.
- the control circuit further comprises at least one gyroscope and / or at least one accelerometer.
- the gyroscope can be made by any suitable means.
- the gyroscope is made by a set of accelerometers connected to a computer continuously integrating accelerations.
- the control circuit comprises at least one inertial unit and possibly a compass. It can be a two-dimensional compass or a three-dimensional compass. In the case of a three-dimensional compass, the compass indicates the three-dimensional vector that the terrestrial magnetic field makes with respect to the control circuit.
- the control circuit of each ski comprises a sensor and a calculation circuit configured to calculate the parameter or parameters.
- the device comprises a piezoelectric blade configured to integrate into the ski and in that the control circuit is configured to discriminate a sliding of the ski and another movement of the ski by controlling the electrical power generated by the piezoelectric blade.
- the piezoelectric blade is configured to supply the entire secure fastening device.
- the fixing member comprises a front stop, a heel and at least one pivoting plate placed between the front stop and the ski and / or between the heel and the ski.
- the turntable is configured to be blocked in the absence of a disconnection signal.
- the device comprises a first control circuit configured to be associated with a straight ski and a second control circuit configured to be associated with a left ski.
- control circuit is configured to determine which ski is the right ski and which ski is the left ski relative to the shoe with which each ski is associated.
- FIG. 1 schematically illustrates, in a top view, a embodiment of a secure fastening device.
- the device for securely fastening a boot to a ski has an organ fastening 1 of the boot on a first ski configured to facilitate the separation between the boot and the first ski on receiving a decoupling signal.
- the fastener 1 may be any means for attaching a boot to a ski well known to those skilled in the art.
- the fixing device comprises a pivoting plate 3 placed between the front stop and the ski and / or between the heel and the ski to allow the shoe to remove more easily and reduce the risk of injury for the skier.
- the fastener 1 has two different behaviors.
- it is conventional fasteners comprising a front stop and a heel with which is associated at least one pivoting plate placed between the ski and the stop before and / or between the ski and the heel.
- conventional fasteners any fastener as described above capable of mechanically fastening the ski boots to the ski and to separate it, especially when forces greater than a predefined threshold are applied to at least one of the elements of the binding.
- the turntable 3 is configured to rotate, for example more or less 60 °, about a vertical axis relative to the main plane of the ski parallel to the sliding surface of said ski.
- the turntable 3 comprises an electromechanical mechanism allowing
- the plate 3 When the plate 3 is immobilized, it is the same for the fixation which is mounted on the plate 3. In this position, the user can ski and the fastener 1 works advantageously as in the prior art.
- the plate 3 When the plate 3 is released, it can rotate as the attachment. This freedom of rotation allows the boot to remove more easily by escaping laterally relative to the ski to reduce the risk of injury to the skier, including knee injury.
- the fixing device also comprises a control circuit 2 configured for:
- the control circuit 2 is configured to lock the fastener 1 in a functional position to ski, for example to lock the turntable 3 in its non-pivoting configuration, in the absence of a disconnection signal.
- the plate 3 is in the locked position so that in case of failure of the control circuit 2 or in the absence of the signal, the fixing device operates as in the prior art.
- the user is always protected but less effectively, for example as in the prior art.
- each ski comprises a fixing device comprising at least one fastener 1 and a control circuit 2.
- the control circuit 2 of each ski comprises one or more sensors and a calculation circuit for calculating the parameter or parameters.
- the control circuit 2 of the first ski can be connected to the fixing member 1 by a wire connection. This allows in particular to reduce the power consumption of the fixing device.
- the control circuit 2 is able to know the spatial configuration of the two skis and to determine if the situation is a risky situation or a non-dangerous situation. In this way, compared with the devices of the prior art, the uncoupling in non-hazardous situations is reduced.
- a first control circuit 2 is fixed on the first ski so as to determine one or more parameters specific to the first ski.
- a second control circuit 2 is fixed on the second ski so as to determine one or more parameters specific to the second ski.
- the use of a control circuit 2 dedicated to each ski makes it easier to calculate the various desired parameters. This, however, generally involves knowing which ski is the right ski and which other ski is the left ski. Such a determination can be made either by an initial predetermination of a right ski and a left ski as soon as the skis are designed, or by a setting of the skis as soon as they are associated with a right shoe or a left shoe.
- the secure fastening device comprises a first calculation circuit configured to be associated with a straight ski and a second calculation circuit configured to be associated with a left ski and, according to a second embodiment , the control circuit 2 is configured to determine which ski is the right ski and which ski is the left ski relative to the shoe with which each ski is associated.
- the second embodiment has the advantage of being able to use two identical skis.
- control circuit 2 of each ski sends the information relating to its ski to a calculation circuit.
- the calculation circuit is then able to calculate the parameter.
- the information is transmitted permanently or periodically.
- the calculation circuit is fixed on one of the skis.
- each ski has a calculation circuit which receives information from the different sensors.
- the calculation circuit is connected by a fii link, to the control circuit 2 of his ski, to the possible other sensors and to the attachment member 1 of his ski.
- control circuit 2 of the first ski communicates periodically or continuously with the control circuit 2 of the second ski.
- the communication between the two skis is preferentially a wireless communication, for example with a radio frequency link.
- a fiancial connection by means of a thread integrated in the ski boots and in the pants of the skier.
- the communication between the two control circuits 2 may, for example, be digitally encoded. It may be more preferably an encrypted radio wave.
- the secure fastening device further comprises a sensor configured to determine whether the shoe of one of the two skis has loosened.
- the sensor is configured to determine whether the shoe is fixed or not.
- said sensor communicates the heave to the sensor or to the control circuit 2 of the other ski and the control circuit 2 of the other ski facilitates the separation of the second shoe .
- a disconnection signal is then sent to the fixing member 1 of the other ski.
- the sensor can be made by any means known to those skilled in the art, for example by a magnet system or any other passive system capable of detecting two different signals indicating for example "no shoe", "right shoe” or "left shoe ".
- the fixing device also comprises a control circuit 2 configured to: determining the angular difference between the first direction of the first ski and the second direction of the second ski, and
- the control circuit 2 is therefore configured to determine, in addition, the direction of progression of the first and second skis irrespective of the direction of progression of the skis with respect to their longitudinal axis and / or whatever their direction of progression (forward, back, left, right, etc.).
- This can be achieved by any means well known to those skilled in the art, for example by integrating a geolocation device, at least one accelerometer and / or at least one gyroscope in each ski.
- the secure fastening device allows a better evaluation of risk situations.
- the gyroscope can be produced by means of a set of accelerometers connected to a computer which continuously integrates the accelerations. This functionality can be obtained for example by means of a 9-axis sensor.
- control circuit 2 is able to know the spatial configuration of the two skis and to determine whether the situation is a risk situation or a non-dangerous situation. For example, in some configurations, the skier performs a reverse movement at low speed and stops in a configuration that is considered a risk configuration if the skier advances in the normal direction of progression. In this way, compared with the devices of the prior art, the uncoupling in non-hazardous situations is reduced.
- control circuit 2 is configured to:
- the first angle and the second angle are used to determine the angular difference between the two skis. This embodiment is simpler to implement and is also more robust.
- the control circuit 2 is configured to calculate at least one parameter from the first angle, the second angle, the first direction of progression and the second direction of progression, to compare the parameter with a threshold parameter, and to transmit the signal of uncoupling according to the comparison.
- the threshold parameter is integrated in the control circuit 2, it can be evaluated by modeling risk situations taking into account some or all the parameters measured by the fixing device.
- the first reference direction is identical to the second reference direction.
- one of the reference directions is determined relative to a beacon or relative to the magnetic north.
- the first and second reference directions correspond to magnetic north.
- This allows an easy measurement by means of an independent and easily detectable quantity by means of, for example, a simple compass or, preferably, a three-dimensional compass.
- a simple compass or, preferably, a three-dimensional compass.
- information on the north direction is provided.
- the compass also indicates the three-dimensional vector that the earth's magnetic field makes with the control circuit.
- the determination of the orientations of the skis and the determination of the progression directions of the skis can be carried out by any suitable means, for example by means of a geolocation device such as a GPS. However, it must be ensured that the capabilities of the GPS system are able to distinguish the positions of the two skis.
- the secure fastening device is configured to be disengaged manually, for example using a remote control.
- control circuit 2 is configured to cause the separation of the two shoes.
- the control circuit 2 comprises an inertial unit and the compass of the control circuit 2 allows a recalibration of the inertial unit.
- the recalibration is performed when the compass is in a normal plane or substantially normal to the radius of the earth.
- This recalibration is particularly advantageous for a two-dimensional compass.
- the recalibration can also be performed taking into account the gravity to determine the position of the skis in a plane normal to the ground.
- the control circuit 2 is configured to be recalibrated periodically.
- the inertial unit makes it possible to determine the orientation of the ski, especially when the measurement of the compass is very noisy or disturbed by metallic elements. This configuration allows for reliable measurement in a wide variety of configurations.
- control circuit 2 can also be configured to evaluate the speed of movement of one of the skis such as the first ski or both skis.
- the control circuit 2 may also comprise at least one accelerometer. The evaluation of the speed makes it possible to better determine the situations at risk. For example, a snowplow where the skis are particularly pushed backwards will result in a separation shoe / ski if the skier is at high speed while the uncoupling will not not at a standstill or at very low speed.
- the control circuit 2 is configured to discriminate a ski slip on the track and another movement of the ski, for example a trip on a chairlift.
- skis can be stationary on the chairlift but have a speed of movement that can be important.
- the ski comprises a film of piezoelectric material or piezoelectric plate 4 preferably integrated in the ski. In this way, when the ski slides on the snow with the skier, the ski deforms and vibrates thus allowing the piezoelectric blade 4 to generate electricity.
- the control circuit 2 is advantageously configured to control the electric power supplied by the piezoelectric blade 4 to determine if the ski slides on snow or not. In this way, the control circuit 2 is configured to discriminate a slip of the first ski and another action by controlling the electric power produced by the piezoelectric blade 4 in the first ski. When the electric power produced is below a given threshold, the control circuit 2 blocks the fixing member 1 so that the fixing device operates as in the prior art.
- the piezoelectric blade 4 is also configured to supply at least partially the secure fastening device.
- the piezoelectric blade 4 supplies the entire secure fastening device.
- the piezoelectric plate 4 is coupled to super-capacitors or miniature batteries.
- the piezoelectric blade 4 deforms and generates an electric current which supplies the electronic devices of the fixing device.
- the fastening device operates in an energy saving mode, in particular in case of separation between the shoes and the fasteners 1 or in the event of absence or low energy production by the fasteners. piezoelectric blades 4. In this case, there is no communication between the skis.
- control circuit 2 comprises an optionally recalibrated periodically inertial unit with a two-dimensional compass or, preferably, a three-dimensional compass.
- each ski is continuously monitored by its control circuit 2 which detects a sudden change of direction or a sudden deceleration.
- the control circuit 2 detects an angular acceleration and / or a linear acceleration or deceleration of the ski greater than a predefined threshold, it emits a disconnection signal to the fixing member 1 of said ski.
- the threshold of angular acceleration and / or linear acceleration or deceleration of the ski can be set manually or established during a learning mode of the fixing device. Such an embodiment allows the skier to take off immediately as soon as a ski is stopped or deflected by an obstacle, whatever the forces applied to the fastener 1.
- the control circuit 2 blocks the fixing member 1 so that the fixing device operates as in the prior art.
- the fixing device comprises a pivoting plate 3, it is in the immobilized position, able to allow skiing, in the absence of communication between the two skis. The user is therefore always protected but less effectively, for example as in the prior art.
- the control circuit 2 emits no disconnection signal except in the case of an angular acceleration and / or a linear acceleration or deceleration of the ski greater than one. predefined threshold, as previously described.
- the control circuit 2 comprises at least one inertial unit.
- An inertial unit is arranged on each ski and the control circuits 2 are configured to perform the calibration of the two inertial units. In this way, during the calibration step, the arrangement of the two skis is determined. When the skier moves, the two inertial units calculate gradually, the displacement and speed components which allows the control circuit 2 to determine the angular difference and direction of orientation of the two skis.
- the use of an inertial unit is particularly advantageous because it makes it possible to calculate the angle that each ski makes with its reference direction in highly parasitic places. For example, if the reference direction is magnetic north, it is difficult to determine the first and second angles in an area having, for example, buried electric cables.
- the inertial unit is associated with a two-dimensional compass or, preferably, with a three-dimensional compass.
- This association makes it possible to use a less efficient inertial unit.
- This inertial unit is calibrated initially and recalibrated periodically by means of the compass. In this way, the skier does not have to perform initial calibration procedure of the inertial unit and the calculation of the angular difference between the skis is reliable over a long period of time.
- control circuit 2 is configured to recalibrate the inertial units periodically and to avoid the use of the compass when the ski is heavily displaced which distorts the measurement or, in the case where a two-dimensional compass is used, when the position skiing is too little parallel to the normal plane of the earth.
- control circuit 2 consists of a set of micromechanical systems (MEMs) which reduces the power consumption of the device.
- MEMs micromechanical systems
- the control circuit 2 is configured to include a "learning mode". Such a mode allows a calibration of the control circuit 2 on the first or descents made by the skier.
- the fastening device is partially activated in the direction where the control device 2 is only configured to determine the threshold parameters (for example threshold of angular acceleration and / or linear acceleration or deceleration of the ski beyond which the control circuit 2 must emit a decoupling signal) related to the specific characteristics of the skier, in particular at his skill level, but does not emit any signal of solidarity.
- the fixing device can be precalibrated before the first descent in learning mode.
- the user will indicate his own characteristics, for example his weight and / or his level of competence on a reduced level scale (for example, "beginner” / "average” / “confirmed") which will be integrated by the control circuit 2.
- the fixing device will then operate, during the first descent, according to the parameters initially indicated by the user while determining, still during this first descent, the actual threshold parameters (for example threshold of angular acceleration and / or linear acceleration or deceleration of the ski beyond which the control circuit 2 must emit a decoupling signal) related to the skill level of the user.
- the learning mode can be reiterated as many times as necessary, especially if the skier has dropped during the first descent.
- the learning mode can also be progressive, the skier first making a first descent on a blue track, then a second on a red track, etc.
- Such an embodiment is particularly interesting in particular because there is regularly an overestimation by the user of his own level of competence.
- the secure fastening device prevents the risk of injury to the skier while allowing him to ski without removing shoes inappropriately. For example, a position of the snow-type skis backwards (approaching the rear ends and spacing of the front ends of the two skis) will not cause separation between the shoe and the ski if the skier moves towards the rear.
- the fastening device thus allows skiing without risk of injury and without shoes shoes off when the situation is not a risk situation.
- the device further allows to be associated with a conventional fixing comprising a purely mechanical secure system. The device thus takes into account, in order to evaluate risk situations, numerous parameters such as the relative position of the skis with each other, the direction of movement, the speed, the weight of the skier, his skill level, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1300294A FR3001898B1 (en) | 2013-02-11 | 2013-02-11 | SECURE ATTACHMENT OF SHOE ON A SKI |
PCT/FR2013/000329 WO2014122366A1 (en) | 2013-02-11 | 2013-12-10 | Secure attachment of a shoe on a ski |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2953694A1 true EP2953694A1 (en) | 2015-12-16 |
EP2953694B1 EP2953694B1 (en) | 2017-04-19 |
Family
ID=48741242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13818762.0A Not-in-force EP2953694B1 (en) | 2013-02-11 | 2013-12-10 | Secure attachment of a shoe on a ski |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160001163A1 (en) |
EP (1) | EP2953694B1 (en) |
JP (1) | JP2016506808A (en) |
FR (1) | FR3001898B1 (en) |
WO (1) | WO2014122366A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT515266B1 (en) * | 2014-01-02 | 2016-03-15 | Markus Harml | Sportswear system, sports equipment and sports system formed therefrom with anti-static function |
WO2015166143A1 (en) * | 2014-05-02 | 2015-11-05 | Brison S.A. | Device for securely attaching a boot onto a ski |
EP3292894B1 (en) | 2016-09-08 | 2020-02-12 | Brison S.A. | Device for measuring the orientation of two skis or two ski boots |
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2013
- 2013-02-11 FR FR1300294A patent/FR3001898B1/en not_active Expired - Fee Related
- 2013-12-10 EP EP13818762.0A patent/EP2953694B1/en not_active Not-in-force
- 2013-12-10 JP JP2015556547A patent/JP2016506808A/en active Pending
- 2013-12-10 US US14/767,142 patent/US20160001163A1/en not_active Abandoned
- 2013-12-10 WO PCT/FR2013/000329 patent/WO2014122366A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2014122366A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014122366A1 (en) | 2014-08-14 |
JP2016506808A (en) | 2016-03-07 |
EP2953694B1 (en) | 2017-04-19 |
FR3001898B1 (en) | 2015-04-03 |
US20160001163A1 (en) | 2016-01-07 |
FR3001898A1 (en) | 2014-08-15 |
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