WO2002082039A2 - Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte - Google Patents
Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte Download PDFInfo
- Publication number
- WO2002082039A2 WO2002082039A2 PCT/EP2002/003230 EP0203230W WO02082039A2 WO 2002082039 A2 WO2002082039 A2 WO 2002082039A2 EP 0203230 W EP0203230 W EP 0203230W WO 02082039 A2 WO02082039 A2 WO 02082039A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling
- support
- rim
- crushing
- value
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/022—Tyres the tyre co-operating with rotatable rolls
Definitions
- the present invention relates to a method of predicting the maximum driving distance in degraded mode, without substantial deterioration of the driving conditions, of a mounted assembly comprising a wheel rim, a safety support which is mounted on said rim and an envelope. tire which is mounted on said rim, said support supporting the tread of said casing during said rolling (rolling in “degraded mode” is a rolling at reduced or zero inflation pressure).
- the invention also relates to an installation for implementing this method.
- the safety supports for vehicle tires are intended to be mounted on a rim inside the tire, in order to be able to support the tread of this tire in the event of loss of inflation pressure.
- These supports include in particular a base which is intended to be mounted on the rim, and a top which is intended to come into contact with the tread in the aforementioned case and which leaves a guard with respect to the latter at nominal pressure .
- This annular body comprises a support element which is circumferentially continuous with a circumferential median plane, said support element comprising a plurality of partitions extending axially on either side of said circumferential median plane and distributed over the circumference of said support.
- the stop criterion for this run test in degraded mode which is chosen by the operator in charge of the test, corresponds to the appearance of one or more specific damages concerning both the safety support and the tire cover.
- the damage relating to the support can for example be materialized by cracks or breaks at the location of the partitions of the support due to a significant internal heating and the buckling stresses to which said support is subjected when running in degraded mode.
- Damage to the envelope may, for example, be materialized by cuts at the location of the sides of the envelope, in particular due to the camber stresses to which said envelope is subjected on a more or less hazy circuit, or by pure rupture. and simple, making it impossible to continue driving in degraded mode.
- this or these stopping criteria are parameters which can have a determining effect on the result of maximum driving distance in degraded mode without substantial deterioration of driving conditions, which is obtained at the end of this. circuit test.
- the parameters relating to the ambient air (temperature) and to the coating of the circuit used can also influence the maximum driving distance obtained in degraded mode.
- a major drawback of these circuit prediction tests lies in the difficulty of keeping the above parameters identical from one test to another because of their variability, as well as in the more or less restrictive nature of these parameters for the 'support and envelope during taxiing in degraded mode. This may in particular result in Difficulties in comparing the respective endurance in running of different assemblies mounted in degraded mode.
- the aim of the present invention is to propose a method for predicting the maximum driving distance in degraded mode, without substantial deterioration of the driving conditions (that is to say without loss of control of the vehicle), of an assembly mounted comprising a wheel rim, a safety support which is mounted on said rim and a tire casing which is mounted on said rim around said support, said support supporting the tread of said casing during said rolling, which makes it possible to predict in a reliable and reproducible manner the maximum running distances in degraded mode of different mounted assemblies and to compare them with one another under identical experimental conditions.
- said prediction method consists in rolling said assembled assembly at a reduced or zero inflation pressure, from an instant to, at a given temperature, under a determined load and with a constant speed V, on at least one rolling surface so that the center of said wheel rim is a substantially invariant point during said rolling (ie on a rolling wheel, typically), following the variation of a variable R representative of the radial crushing of the support as a function of the running time t at reduced or zero pressure, and in that this method consists, during this running, in implementing the sequence of steps ( i) to (iii) below:
- said value ⁇ R which is adopted in step (ii) constitutes a criterion for stopping the rolling, beyond which the support is subjected to stresses and to heating capable of rendering it unfit for use. .
- said method of predicting the maximum rolling distance of said assembly mounted at reduced or zero inflation pressure, without substantial deterioration of the rolling conditions consists in rolling, also at a given temperature. , under a determined load and with a constant speed V, said support mounted on said wheel rim directly in contact with said rolling surface so that the center of said rim is a substantially invariant point during said rolling, following the variation of said variable R representative of the radial crushing of the support as a function of the running time t at reduced or zero pressure, and in that this method consists, during this running, in implementing steps (i), (ii ) and (iii) above.
- said support is mounted on the rim by clipping, in this second mode.
- step (ii) above consists in monitoring the variation of said variable R from said time t ⁇ _ and predicting that it reaches said critical value R 2 at said critical time t 2 substantially when the instantaneous acceleration of the overwriting d R / dt of said support passes through a zero value.
- this critical time t 2 is such that the graph of said variable R has a point of inflection substantially at said time t 2 , that is to say a reversal of the direction of variation of the slope dR / dt for t > t 2 translating an increasingly high crushing speed of the support which quickly leads to the aforementioned cracks or rupture of said support.
- said variable R representative of the radial crushing of the support advantageously corresponds to the mean radius of said support during crushing (also called “crushed radius”), radius measured between a first point defining the center of said wheel rim and a second point defining the center of the contact surface between said tread and said rolling surface.
- this variable R also corresponds to said radius during crushing, except that this radius is here measured between a first point defining the center of said wheel rim and a second point defining the center of the contact surface between the radially external face of said support and said rolling surface.
- variable R could also correspond to the arrow relating to said support due to the crushing, or even to the relative crushing of the support
- ratio of the arrow on the height of the support the direction of variation of this arrow or of this relative crushing being generally increasing as a function of said time t, beyond the stabilization time ti.
- said prediction method also consists in estimating that said maximum driving distance without substantial deterioration of driving conditions is reached just before smoke is detected at the interior of said assembled assembly.
- said rolling surface used has a geometry substantially cylindrical, and it is for example made up of a rolling wheel, ie whose rolling surface is a cylinder of circular section. It will be noted that this rolling surface can be convex or concave, depending on whether the exterior or interior face of the steering wheel is used, respectively. According to another exemplary embodiment of the invention common to the two abovementioned embodiments, said rolling surface used has a substantially planar geometry, for example of the treadmill type.
- the running surface used can be smooth, or else have a plurality of projecting and / or re-entrant irregularities which are more or less regularly spaced. on its perimeter.
- These irregularities can for example consist of obstacles of the bar type, intended to reproduce the rolling stresses due to manhole covers or other reliefs commonly encountered during an actual road rolling, or else of hollows, for example intended to reproduce the constraints inherent in rolling over potholes.
- the wheel rim comprises in each of its two peripheral edges a rim seat intended to receive a bead of said casing, said rim comprising between its two seats, on the one hand, a bearing intended to receive said support and, on the other hand, a mounting groove connecting said bearing to an axially internal rim of one of said seats.
- an annular body connecting said base and said vertex to each other, said body comprising a circumferentially continuous support element with a circumferential median plane, said support element comprising a plurality of partitions extending axially on either side of said median plane circumferential and distributed over the circumference of said support.
- An installation according to the invention for implementing the aforementioned prediction method according to said first or second embodiments essentially comprises at least one rolling surface, and one or more rolling stations which are each intended for rolling on said surface a mounted assembly comprising a tire casing mounted on a wheel rim around a safety support with reduced or zero inflation pressure, or else when rolling on said surface of such a support mounted on a wheel rim, the center of said assembled assembly or of said support being a substantially invariant point during rolling on said or each rolling surface, this installation being characterized in that it also comprises: - detection means which are connected to said or to each rolling and which are intended to detect at each instant, during rolling on said or each surface, information representative of the effects in duits by this rolling comprising at least one item of information representative of the radial crushing of said support at each instant, and
- a unit for controlling the starting of the taxi according to predetermined taxi parameters comprising a speed V of the taxi and a load to be applied to the support during the taxi, for receiving said information from said detection means and memorizing it, and for command the halting of driving if at least one of said information reaches a predetermined critical value.
- said detection means comprise a crushing sensor, for example of the potentiometric type, which is designed to supply at all times a value of support radius during crushing which is representative of the average radial crushing of said support during rolling, said radius being crushed being measured between a first point defining the center of the wheel rim and a second point defining the center of the contact surface between the casing, or the support as appropriate, and said rolling surface.
- a crushing sensor for example of the potentiometric type, which is designed to supply at all times a value of support radius during crushing which is representative of the average radial crushing of said support during rolling, said radius being crushed being measured between a first point defining the center of the wheel rim and a second point defining the center of the contact surface between the casing, or the support as appropriate, and said rolling surface.
- said detection means also comprise a smoke detector which is designed to detect the presence of smoke by internal heating inside said assembly assembled in progress of rolling at reduced or zero pressure, by means of suction means which are provided inside said rolling station to suck in the direction of said detector the air included inside said mounted assembly.
- FIG. 3 is a block diagram illustrating the simplified structure of an installation according to the invention
- FIG. 4 a schematic view of a rolling station of the installation of FIG. 3
- FIG. 5 is a detail view in section of an internal part of the rolling station according to the plane IV-IV of FIG. 4
- FIG. 6 is a graph illustrating the evolution over time, at the end of running flat, of two characteristics representative of the radial crushing of a support.
- a support 1 which can be used to implement the prediction method according to the invention essentially comprises three parts:
- a base 2 of generally annular shape, a crown 3, substantially annular, with on its radially outer wall (optionally) longitudinal grooves 5, and
- annular body 4 for connection between the base 2 and the top 3.
- Fig. 2 illustrates in particular the function of the support 1 when it is mounted on a wheel rim 6, which is to support the tread 7 of a tire casing 8 in the event of a fall in the inflation pressure at inside of the mounted assembly 9 comprising the rim 6, the support 1 and the casing 8.
- the support 1 comprises a first solid part 4a of the annular body 4 as well as a second part 4b comprising recesses separated from each other by partitions 4a (see also Fig. 1) extending axially over substantially more than half of the annular body 4, opening on the outside in a substantially axial direction.
- partitions 4a are regularly distributed over the entire circumference of the annular body 4.
- the installation 10 essentially comprises: a rolling machine 20 comprising a flywheel 21 which is mounted on a motor shaft 22 for its rotational drive, one or more rolling stations 30 which are each intended for rolling on the steering wheel 21 d a mounted assembly 9, or else a safety support 1 mounted on a rim 6 (a single station 30 is shown in FIG. 3 for simplification purposes),
- - Detection means 40 which are connected to said or to each taxiing station 30 and which are provided for detecting at each instant, during taxiing “flat” on the steering wheel 21, information representative of the effects induced by this taxiing on the 'mounted assembly 9 (or on the support 1, as the case may be), and - a unit 50 for controlling the start-up of said rolling according to predetermined rolling parameters, for receiving said information from said means 40 and storing it, and for command the stopping of said rolling if at least one of said information reaches a predetermined critical value.
- the rolling station 30 is shown in more detail in FIG. 4.
- This station 30 essentially consists of a frame 31 on which is mounted a hub 32 which is in this example intended to receive the assembled assembly 9 or the rim 6 provided with the support 1 (only the hub 32 is shown at for clarity) in order to roll the casing 8 or said support 1 on the steering wheel 21.
- the hub 32 is mounted movable in translation on the frame 31 by displacement means 33, so as to allow the rolling of the casing 8 (or support 1, as the case may be) on the steering wheel 21 according to a given load.
- the axis of symmetry of the hub 32 is provided parallel to said drive shaft 22 (not visible in FIG. 4) of the flywheel 21, and the hub 32 includes bearings (not visible) to allow rotation of the mounted assembly 9 or rim 6 provided with support 1 in contact with the steering wheel 21.
- the rolling machine 20 is such that the steering wheel 21 has a smooth rolling surface.
- the hub 32 is provided, at the location of its axis of symmetry, with a tube 34 or "valve nose", which projects axially at the front of the hub 32 and which is intended to be connected to the valve. wheel of the assembled assembly 9.
- the displacement means 33 of the hub 32 comprise in this embodiment bellows 35 which are controlled by pneumatic type control means (not shown) to which they are connected, so that they can pass from one withdrawal position, in which the casing 8 or the support 1 are distant from the steering wheel 21, at various rolling positions, in which the casing 8 (or the support 1, as the case may be) are applied to the steering wheel 21 .
- the means 40 for detecting the effects of rolling on the mounted assembly 9 essentially comprise a crushing sensor 41 which is designed to supply at all times a value of "crushed radius” which is representative of the average radial crushing of the support 1 during said rolling. This "crushed radius" is measured at each second of travel between a first point defining the center C of the wheel 6 and a second point defining the center of the contact surface between the tread 7 and the steering wheel 21.
- this sensor 41 is of potentiometric type and it is provided with a wire (not shown in FIG. 4) which is connected to the displacement means 33 of the rolling station 30 so as to assign to each position of said station 30 a value of "radius overwritten".
- sensor 41 As sensor 41, a sensor sold by the company ASM under the name "WL 10/250 / 10V / L 10" is used for example.
- the means 40 further comprise a smoke detector 42 which is designed to detect any presence of smoke by internal heating inside the assembly mounted 9 during taxiing
- This smoke detector 42 is connected to the unit 50 so as to be able to transmit an alarm signal to it in the event of smoke detection.
- the smoke detector 42 is connected to the internal end of said tubing or “valve nose” 34 by suction means 43 which are provided inside the station 30 for sucking in the direction of the detector 42 the smoke generated at inside the assembled assembly 9. Part of these suction means 43 is shown in FIG. 5.
- These means 43 essentially comprise, from said tubing 34, a tube 44 which is connected to the latter so as to communicate with the interior of the assembly mounted 9 in rotation, a rotary joint 45 which is connected to said tube 44 via an O-ring connector 46, and a pipe 48 which is connected to said rotary joint 45 via another connector 49 and which leads to the detector smoke 42.
- a fan (not shown) is connected to this pipe 48 to allow the aforementioned suction.
- the prediction method according to the invention can be implemented in the following manner, by means of the aforementioned installation.
- the application on the steering wheel 21 is controlled of a mounted assembly 9 (or of a support 1 mounted on a rim 6, as the case may be), which has been previously mounted on the hub 32, by means of the automation provided for this purpose by the unit 50.
- This automation has the effect of moving the rolling station 30 from a withdrawal position to a rolling position on the steering wheel 21, in such a way that the tread 7 of the casing 8 (or the support 1, as the case may be) is applied to said flywheel 21.
- the unit 50 makes it possible to display the evolution of the average “crushed radius” R (in mm) of the support 1 as a function of the running time t (in s), thanks to the information it receives from the crushing sensor 41.
- this crushed radius varies in an erratic and insignificant manner, essentially by creep due to its rotation at a relatively high speed and the stress resulting from the applied load. From this time ti, this crushed radius begins to decrease in a continuous and sensitive manner, essentially by buckling.
- a stop criterion was used (ie the reduction ⁇ R of the crushed radius from the crushed radius corresponding to the stabilization time of approximately 15 min.) A reduction of this crushed radius 0.5 mm in 10 seconds after these 15 min. stabilization time, for a support having a height of 60 mm, a width of 110 mm and an internal diameter of 460 mm.
- the suction means 43 also make it possible to suck up any air currents or vortices at the interior of the mounted assembly 9 which would not allow detect the presence of smoke, and also regulate the inflation air pressure to a zero or reduced value.
- Fig. 6 contains such graphical characteristics obtained for running at zero internal pressure of two mounted assemblies tested identical (each comprising a support as described in patent document WO-A-00/76791).
- the two graphs in FIG. 6 relate to the last 60 seconds before breaking of the supports (by buckling and excessive internal heating).
- each assembled assembly is 225/700 R480, and the applied load of 430 daN.
- the stopping criterion used was a reduction ⁇ R of the crushed radius by 0.5 mm in 10 seconds after 15 min. stabilization time.
- the graph of the crushed radius relating to the 88 km / h test shows an inflection point II, beyond which the speed of decrease of the slope of the crushed radius suddenly increases until it breaks of the support that occurs ten seconds later.
- This point II corresponds to a prediction of maximum driving distance, without substantial deterioration of driving conditions, equal to 384 km for the assembled assembly.
- the graph of the crushed radius relating to the 100 km / h test presents an inflection point 12, which corresponds to a prediction of maximum driving distance, without substantial deterioration of the driving conditions, equal to 208 km for the assembled assembly.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002579762A JP2004529028A (ja) | 2001-04-05 | 2002-03-22 | 機能喪失モードでの装着形組立体の最大走行距離を予測する方法 |
EP02759777A EP1421358A2 (fr) | 2001-04-05 | 2002-03-22 | Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte |
CA002410811A CA2410811A1 (fr) | 2001-04-05 | 2002-03-22 | Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte |
US10/384,863 US6820015B2 (en) | 2001-04-05 | 2003-03-10 | Method and installation for predicting the maximum running distance, in degraded mode, of a mounted assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0104764A FR2823303A1 (fr) | 2001-04-05 | 2001-04-05 | Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte pour automobile |
FR01/04764 | 2001-04-05 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/384,863 Continuation US6820015B2 (en) | 2001-04-05 | 2003-03-10 | Method and installation for predicting the maximum running distance, in degraded mode, of a mounted assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002082039A2 true WO2002082039A2 (fr) | 2002-10-17 |
WO2002082039A3 WO2002082039A3 (fr) | 2004-03-25 |
Family
ID=8862079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/003230 WO2002082039A2 (fr) | 2001-04-05 | 2002-03-22 | Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte |
Country Status (7)
Country | Link |
---|---|
US (1) | US6820015B2 (fr) |
EP (1) | EP1421358A2 (fr) |
JP (1) | JP2004529028A (fr) |
KR (1) | KR20030020291A (fr) |
CA (1) | CA2410811A1 (fr) |
FR (1) | FR2823303A1 (fr) |
WO (1) | WO2002082039A2 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7055381B2 (en) * | 2004-07-08 | 2006-06-06 | The Goodyear Tire & Rubber Company | Method of testing tires for durability |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3563088A (en) * | 1966-09-12 | 1971-02-16 | Lawrence R Sperberg | Non-destructive method of determining tire life |
US4442879A (en) * | 1978-06-07 | 1984-04-17 | The Toyo Rubber Industry Co., Ltd. | Irregular wear-resistant radial ply tire |
US4762158A (en) * | 1985-03-15 | 1988-08-09 | Bridgestone Corporation | Reduced rolling resistance pneumatic radial tire |
US4815004A (en) * | 1986-10-17 | 1989-03-21 | Eagle-Picher Industries, Inc. | Apparatus and method for predicting fore/aft forces generated by tires |
US5103595A (en) * | 1990-05-14 | 1992-04-14 | Fmc Corporation | Apparatus and method for reducing vibration characteristics in a wheel rim and tire assembly |
US5151141A (en) * | 1991-03-28 | 1992-09-29 | The Goodyear Tire & Rubber Company | Tire and rim |
US5749984A (en) * | 1995-12-29 | 1998-05-12 | Michelin Recherche Et Technique S.A. | Tire monitoring system and method |
EP0955534A2 (fr) * | 1998-05-08 | 1999-11-10 | Bridgestone Corporation | Procédé d'estimation de la durée de vie d'un pneu en fonction du niveau d'usure |
WO2000076791A1 (fr) * | 1999-06-10 | 2000-12-21 | Societe De Technologie Michelin | Appui de securite allege pour pneumatique |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0382931A (ja) * | 1989-08-25 | 1991-04-08 | Sumitomo Rubber Ind Ltd | タイヤ点検方法 |
FR2720977B1 (fr) | 1994-06-09 | 1996-09-06 | Michelin & Cie | Procédé de montage d'un ensemble formé d'un pneumatique et d'un appui de soutien de bande de roulement. |
JP3277156B2 (ja) * | 1998-05-08 | 2002-04-22 | 株式会社ブリヂストン | タイヤ摩耗寿命予測方法 |
US6269690B1 (en) * | 1998-05-08 | 2001-08-07 | Bridgestone Corporation | Method for estimating a tire wear life |
-
2001
- 2001-04-05 FR FR0104764A patent/FR2823303A1/fr active Pending
-
2002
- 2002-03-22 EP EP02759777A patent/EP1421358A2/fr not_active Withdrawn
- 2002-03-22 JP JP2002579762A patent/JP2004529028A/ja active Pending
- 2002-03-22 WO PCT/EP2002/003230 patent/WO2002082039A2/fr active Application Filing
- 2002-03-22 KR KR1020027016513A patent/KR20030020291A/ko not_active Application Discontinuation
- 2002-03-22 CA CA002410811A patent/CA2410811A1/fr not_active Abandoned
-
2003
- 2003-03-10 US US10/384,863 patent/US6820015B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3563088A (en) * | 1966-09-12 | 1971-02-16 | Lawrence R Sperberg | Non-destructive method of determining tire life |
US4442879A (en) * | 1978-06-07 | 1984-04-17 | The Toyo Rubber Industry Co., Ltd. | Irregular wear-resistant radial ply tire |
US4762158A (en) * | 1985-03-15 | 1988-08-09 | Bridgestone Corporation | Reduced rolling resistance pneumatic radial tire |
US4815004A (en) * | 1986-10-17 | 1989-03-21 | Eagle-Picher Industries, Inc. | Apparatus and method for predicting fore/aft forces generated by tires |
US5103595A (en) * | 1990-05-14 | 1992-04-14 | Fmc Corporation | Apparatus and method for reducing vibration characteristics in a wheel rim and tire assembly |
US5151141A (en) * | 1991-03-28 | 1992-09-29 | The Goodyear Tire & Rubber Company | Tire and rim |
US5749984A (en) * | 1995-12-29 | 1998-05-12 | Michelin Recherche Et Technique S.A. | Tire monitoring system and method |
EP0955534A2 (fr) * | 1998-05-08 | 1999-11-10 | Bridgestone Corporation | Procédé d'estimation de la durée de vie d'un pneu en fonction du niveau d'usure |
WO2000076791A1 (fr) * | 1999-06-10 | 2000-12-21 | Societe De Technologie Michelin | Appui de securite allege pour pneumatique |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 255 (P-1221), 27 juin 1991 (1991-06-27) & JP 03 082931 A (SUMITOMO RUBBER IND LTD), 8 avril 1991 (1991-04-08) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02, 29 février 2000 (2000-02-29) & JP 11 326144 A (BRIDGESTONE CORP;TOYOTA MOTOR CORP), 26 novembre 1999 (1999-11-26) * |
Also Published As
Publication number | Publication date |
---|---|
EP1421358A2 (fr) | 2004-05-26 |
FR2823303A1 (fr) | 2002-10-11 |
US6820015B2 (en) | 2004-11-16 |
US20040002820A1 (en) | 2004-01-01 |
KR20030020291A (ko) | 2003-03-08 |
WO2002082039A3 (fr) | 2004-03-25 |
CA2410811A1 (fr) | 2002-10-17 |
JP2004529028A (ja) | 2004-09-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3280601B1 (fr) | Pneumatique muni d'un dispositif électronique | |
EP2379353B1 (fr) | Procede d'alerte concernant l'usure d'un pneumatique muni d'un sillon | |
CA1146995A (fr) | Ensemble pneu et jante de roue | |
EP0893680B1 (fr) | Dispositif de surveillance des sollicitations subies par un pneumatique | |
EP0975477B1 (fr) | Insert de securite generant un signal vibratoire transversal et dispositif de detection de la mise en appui d'un pneumatique sur un insert | |
WO2016128114A1 (fr) | Procede de detection d'une inclinaison d'une roue par rapport a l'horizontal | |
EP4149773A1 (fr) | Pneumatique a adherence sur sol mouille amelioree en fin de vie | |
WO2002082039A2 (fr) | Methode de prediction de la distance maximale de roulage en mode degrade d'un ensemble monte | |
EP3126157B1 (fr) | Armature de sommet de pneumatique pour avion | |
EP3060414B1 (fr) | Armature de sommet de pneumatique pour avion | |
FR3075916A1 (fr) | Valve de gonflage pour jante de pneumatique avec limitation de deformation elastique | |
WO2020120769A1 (fr) | Procédé de détection d'un risque d'éclatement d'un pneu | |
EP0844111A1 (fr) | Insert de sécurité avertisseur | |
WO2020025685A1 (fr) | Pneumatique à architecture sommet optimisée | |
WO2001064459A1 (fr) | Jante avec sieges inclines vers l'exterieur et ensembles comprenant une telle jante et un appui de soutien gonfle | |
WO2018109328A1 (fr) | Pneumatique comportant un moyen protecteur du flanc | |
FR3112385A1 (fr) | Dispositif et procédé de caractérisation d’un pneumatique en uniformité | |
FR2886401A1 (fr) | Procede et dispositif de controle d'un appui de soutien de pneumatiques | |
FR3136194A1 (fr) | Pneumatique comprenant des couples de découpures transversales de dispersion sonore | |
WO2023194021A1 (fr) | Pneumatique à haute capacité de charge surveillé en pression | |
FR3125253A1 (fr) | Assemblage a uniformite amelioree | |
FR2714179A1 (fr) | Procédé pour corriger les variations de force radiale entre le pneumatique et le sol. | |
WO2020025687A1 (fr) | Pneumatique à architecture sommet et sculpture optimisée | |
WO2010058121A1 (fr) | Dispositif de detection d'une crevaison lente ou d'un sous-gonflage d'un pneumatique et procede correspondant | |
FR2762260A1 (fr) | Insert de securite generant un signal vibratoire transversal et dispositif de detection de la mise en appui d'un pneumatique sur un insert |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002759777 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2410811 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020027016513 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 028010779 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1020027016513 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10384863 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002579762 Country of ref document: JP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 2002759777 Country of ref document: EP |