Abstract: Traction chain for an automobile vehicle including a wheel support (K) which supports a rotating hub designed to receive a drive wheel (W), and a rotating toothed wheel having the same rotation axis as that of the drive wheel, the toothed wheel meshing directly with the hub. At least two gear-wheels are permanently engaged with the toothed wheel and are rotated by an input shaft that is driven by an electric motor. A gear ratio change shifter mechanism is shiftable between first and second driving positions and a neutral non-driving position. In the first driving position the shifter mechanism directly connects the input shaft with one of the gear-wheels. In the second driving position the shifter mechanism indirectly connects the input shaft with the other gear-wheel through a transmission path which establishes a gear reduction ratio different from the gear ratio established by the direct connection.

Abstract: A non-pneumatic resilient tire which derives its capacity to bear a load from laminated elements capable of supporting bending moments. The laminated elements include a stack of resilient sheets superposed and separated by a layer of rubber adhering to the latter, forming a beam capable of undergoing bending stress.

Abstract: The structural platform (11) of the vehicle comprises two tanks (T1) and (T2) for the storage on a vehicle of fluids under pressure. Each tank comprises at least one network of cells (2) connected to one another via orifices (3), the orifices being conformed so that the flow of fluid caused by the consumption of fluid necessary for the use of the vehicle exhibits only pressure drops which do not affect the use, and being conformed so that, in the event of rupture of one or more cells (2), the leakage flow causes sufficiently large pressure drops to limit the flow thereof.

Abstract: The tire 1 comprises a plurality of support elements 2 connected to an interconnection structure 3 to a tread 4, each support element being connected by a staple 7 to a wheel disk 6.

Abstract: A non-pneumatic tire comprises circumferentially-spaced support elements joined together by an interconnection structure with the interposition of flexible joints, so as to ensure good overall operation.

Abstract: A system for steering a vehicle whereof steering of all the steerable wheels is controlled by an actuator specific thereto, the system having a controller which has at least a normal mode of operation in which, for each steerable wheel, the controller determines a set point for the normal steering angle and a degraded mode activated in the event of failure of a wheel actuator, in which the controller determines a compensating steering set point for a wheel.

Abstract: A vehicle having a suspended body (1), at least two wheels (2) each mounted on a wheel support. Each wheel support is mounted on a suspension device (5) comprising a suspension support (4) and means for guiding the wheel support relative to the suspension support. The suspension device allows a vertical displacement of the wheel support relative to the suspension support, the size of the displacement being sufficient to produce the vertical suspension movement required. At least one wheel is arranged transversely on one side of the body and at least one other wheel is arranged on the other side of the body. Each suspension support is connected to the body by a height variation mechanism (3, 7, 11, 12) which allows the relative height of the suspension support relative to the body (1) to be varied. Each height variation mechanism is actuated by height control means (15, 16, 17, 18).

Abstract: An electrical rotating machine having a rotor comprising a shaft made from non-magnetic material, a plurality of pole pieces made from magnetic material and surrounding the shaft, with permanent magnets fixed in receivers by wedges cooperating with the pole pieces to block radially outward movement of the magnets.

Abstract: A vehicle (1) equipped with a tank (2) for storage of a fluid under pressure on the vehicle, the tank being connected to at least one vent channel (3 and 33), the vent channel leading to a discharge orifice (34), the vent channel being connected to the tank by means of at least one safety valve, wherein in that the safety valve is a thermal release valve (5), normally closed and capable of opening spontaneously under the effect of a rise in temperature, the safety valve being installed in a predefined zone of the vehicle and the discharge orifice being remote from the predefined zone.

Abstract: An electrical rotating machine in which the laminated magnetic circuit of an external stator includes a stack of yokes each made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis and a plurality of teeth disposed inside the yokes, the teeth each being made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis, the teeth being stacked and the stacks of teeth delimiting slots, the teeth being bound with the yokes by gluing with resin.

Abstract: An electrical rotating machine in which the laminated magnetic circuit of an external stator includes a stack of yokes each made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis and a plurality of teeth disposed inside the yokes the teeth each being made from a magnetic metal sheet and disposed substantially parallel to a plane perpendicular to the axis, the teeth being stacked and the stacks of teeth delimiting slots , the teeth being bound with the yokes by gluing with resin.

Abstract: The invention proposes a method of controlling the gear change for a vehicle having at least two driving wheels, each driven by an electric motor M via a gear change mechanism having at least two reduction gears, a sensor for sensing the rotation speed of the driving wheel, in which the gear change on the two driving wheels is carried out in accordance with the following sequence: in an initial phase, releasing the current gear on a wheel referred to as the “operated” wheel RM, and stopping it in the neutral position, changing the revolution speed of the motor so as to synchronize it as a function of the reduction of the gear to be engaged on the operated wheel RM, using as an estimate of the speed of the vehicle a speed information item that is obtained from another driving wheel, referred to as the “sensor” wheel RC, engaging the intended gear on said “operated” wheel RM, then, in a successive phase, changing the gear on said other driving wheel with reversal of the roles of sensor wheel RC and operated whe

Abstract: A steering system for a vehicle includes a steerable wheel 1 capable of being steered, a steering wheel 20, and an electrical actuator 3 for altering the steering angle of the steerable wheel. The electrical actuator 3 has three electric motors 31, 32, 33 which act in parallel and three controllers 61, 62, 63 which operate in parallel, each forming part of an electrical control channel for the steering angle. The controller of each electrical channel receives one of the three electrical signals in the control channels and is connected to one of the position sensors and drives one of the electric motors in order to set the said steering angle. The torques delivered by the respective motors are added together in normal operation.

Abstract: A system for steering a vehicle whereof steering of all the steerable wheels is controlled by an actuator specific thereto, the system having a controller which has at least a normal mode of operation in which, for each steerable wheel, the controller determines a set point for the normal steering angle and a degraded mode activated in the event of failure of a wheel actuator, in which the controller determines a compensating steering set point for a wheel.

Abstract: The structural platform (11) of the vehicle comprises two tanks (T1) and (T2) for the storage on a vehicle of fluids under pressure. Each tank comprises at least one network of cells (2) connected to one another via orifices (3), the orifices being conformed so that the flow of fluid caused by the consumption of fluid necessary for the use of the vehicle exhibits only pressure drops which do not affect the said use, and being conformed so that, in the event of rupture of one or more cells (2), the leakage flow causes sufficiently large pressure drops to limit the flow thereof.

Abstract: Traction chain for an automobile vehicle, comprising a wheel support (K) which supports a rotating hub designed to receive a drive wheel (W) and which realizes a rotation axis for the said drive wheel, a rotating toothed wheel (3) having the same rotation axis as that of the said drive wheel, the toothed wheel meshing directly with the hub, an arrangement comprising at least two gear-wheels permanently engaged with the said toothed wheel, comprising an electric motor (M), and comprising a gear ratio change mechanism with a neutral position between ratios, controlled by a fork which is itself controlled by a motorized reduction unit 12. The mechanism comprises a direct mesh between the input shaft and one of the gear wheels, and comprises at least one other mechanical transmission path with a different reduction ratio from the direct mesh between the input shaft and the other gear-wheel.

Abstract: An electrical rotating machine having a rotor comprising a shaft made from nonmagnetic material, a plurality of pole pieces made from magnetic material and surrounding the shaft, with permanent magnets fixed in receivers by wedges cooperating with the pole pieces to block radially outward movement of the magnets.

Abstract: For a vehicle, all of whose road wheels are steerable wheels, the steering instructions are transmitted by electrical means. The vehicle path is altered by a device comprising a component which is similar to a steering wheel, and has two handles 32G, 32D arranged at a certain distance from the rotary shaft and preferably substantially symmetrically with respect to it. The rotary shaft is provided with at least one angle-of-rotation sensor 34 and has a sensor for the tilting force of the handles. The driver turns the handles 32G and 32D clockwise to turn right and anticlockwise to turn left. The driver applies selected tilting forces to the handles 32G and 32D to displace the vehicle transversely to the left or the right, while keeping its longitudinal orientation unchanged.

Abstract: A non-pneumatic tire comprises circumferentially-spaced support elements joined together by an interconnection structure with the interposition of flexible joints, so as to ensure good overall operation.

Abstract: An electric parking brake device for a vehicle at least two of whose wheels on the same axle are steered wheels whose steering angle is imposed selectively on each steered wheel by a dedicated electric actuator, each electric actuator being controlled by a direction control unit which determines a steering angle for each of the steered wheels as a function of at least one signal delivered by a vehicle path control element. A parking brake control unit delivers a parking brake locking command to the control unit, such that, upon receipt of a parking brake locking command, the control unit transmits antagonistic steering angle commands to the two wheels on the same axle.