Abstract: Steering control system for a land vehicle where all the wheels are steered (1), the said steering system comprising at least one actuator (3Av) for acting on the steering angle of the at least one front steered wheel and at least one actuator (3Ar) for acting on the steering angle of the at least one rear steered wheel, the said steering system comprising a controller (4) using as input variables at least the speed of the vehicle (V) and the said requested steering signal (?) in order to determine for each of the actuators a control angle (?) according to which the actuator is controlled for the steering, the system comprising a module for controlling the steering behaviour (5) of the vehicle, making it possible to determine the longitudinal coordinate (xR) of the instantaneous centre of rotation of the vehicle from the speed of the vehicle (V) and a rule characteristic of the dynamic equilibrium of the vehicle and the choice of a maximum transverse acceleration value (?y max) of the vehicle, and a block (43

Abstract: A device for manufacturing a reinforcement from a thread laid down directly in its final location by projecting lengths of the thread onto a receiving surface (S).

Abstract: An apparatus for producing a pneumatic tire reinforcement, said apparatus being intended to produce a reinforcement consisting of a thread (2) delivered substantially continuously and on demand by an appropriate delivery device, said apparatus being intended to be used in cooperation with a substantially toroidal form (1) on which said reinforcement is progressively built up by depositing arches (3) of said thread along a desired path for said thread on the surface of said form. The apparatus includes: a thread guide (4) in which the thread can slide; means (5) for moving said guide along the desired path for said thread; and first and second pressing means (7, 8) placed respectively on either side of the form and capable of holding the thread against the form substantially at the ends (6) of said arches, wherein the pressing means comprise, at least on a side (B) of the form, a rotary pressing arm (9).

Abstract: An automatic inflation and deflation circuit for a tube (3) is produced with a single compressed fluid supply conduit (5). The inflation results from subjecting a non-return valve (VA) in series on the conduit to excess pressure. Deflation is provided by subjecting the non-return valve for a brief moment to excess pressure and then in producing (EVDG) a calibrated leak (11) in the conduit. Evidence is provided that the pressure in the conduit is such that it enables to maintain the non-return valve open, although the pressure on the side of the tube is higher than the pressure in the conduit during deflation.

Abstract: A tread for a heavy vehicle tire, comprising at least one tread design component (3) delimited by at least two grooves, each component comprising a contact face (4) limited by edges (7, 8); the contact face (4) having, viewed in a cross-sectional plane substantially perpendicular to the contact face of the tread and cutting two of the edges of the motif at A1 and A2, a plot whose geometrical profile P between the points A1 and A2 has at least one bump (9, 10) in relief relative to a virtual straight line D passing through the points A1 and A2, the point B1, B2 of each bump (9, 10) that is furthest from the straight line D being located a height Hi from this straight line and a distance Di from the point A1 or A2 that is the closer, with 0.1<Di/L<0.25, where L is the distance separating the points A1 and A2, and 0.1 mm<Hi<2.5 mm.

Abstract: A tire tread includes a running surface intended to be in contact with the roadway during travel. The running surface has a plurality of first cut-outs of a depth less than the thickness of the tread and defining tread pattern elements of a height less than the total thickness of the tread. The tread has a plurality of cavities located subjacent the running surface when the tread is new. Each of these cavities eventually forms at least one new groove or incision in the running surface after partial wearing of the tread. Each cavity is delimited by the rubber of the tread and has an upper generatrix beneath the running surface when the tread is new. The upper generatrix of each cavity follows an undulating profile having a series of recesses and elevations, the amplitude of these recesses and elevations being at least 10% of the depth of the new grooves or incisions that are eventually created.

Abstract: An assembly comprising a tire (P) without an inner tube, provided with two beads and intended to be mounted on a mounting rim (J) comprising seats (440) extended radially towards the outside by flanges (R), and a rubber sealing piece (E) arranged between said rim and said tire, characterized in that the diameters (DP) of the tire bead seats are greater than the corresponding diameters (DJ) of the rim seats (440), said tire (P) being provided integrally with the sealing piece (E) formed of three parts which are integral with each other, a central part (51), made of material impermeable to the inflation gases, being placed axially between the beads of the tire, this central part (51) being extended axially beneath the beads of the tire by edges (50) integral with said beads, means being provided for facilitating the separation of the central part from the lateral parts. A process for manufacturing such an assembly.

Abstract: A process for extracting at least one variable associated with a periodic signal (S, S?) including a possible continuous component, a sinusoidal fundamental component and possible harmonics. Numerical samples of the periodic signal (S, S?) are formed and special filtering is applied to monitoring of the periodic signal. Each sample is interpreted as the sum of the fundamental component and the possible continuous component of this periodic signal. This process can be applied to evaluation of the torsion of a sidewall (11) of a tire (1) fitted on a wheel under the action of torque exerted between the rim (4) of this wheel and the tread (12) of the tire (1).

Abstract: A “forward facing” lift truck (1) for transporting a vertical stack (2) of tires (3) located in front of the lift truck. The lift truck includes grasping means (4) mounted on the frame or “mast” (11) of the lift truck and adapted for picking up and dividing the stack vertically into two vertical, so-called “upper” (2H) and “lower” (2B) sections, so as to open up a space (E) between the two “upper” and “lower” sections of the stack. This space is created at a height above the floor such that the field of vision (CV) of the lift truck driver (or operator) passes through this space at an angle such that the operator can see the floor in front of the lift truck, at a predetermined “safe” distance (D) and beyond, and also has a distant view.

Abstract: The present invention relates to an autonomous device which is intended to be carried by a tire and wheel assembly in order to detect revolutions of said assembly, comprising at least one sensor which produces signals and an interpreter device which is connected to the sensor in order to interpret the signals produced by the sensor. The sensor is a passive sensor, the produced signals of which are proportional to the temporal variations of a magnetic flux though this sensor, and is intended to be integral in rotation with the tire such that the revolutions of said assembly correspond to the revolutions of said sensor. The invention likewise relates to an assembly provided with an autonomous device which permits detection of revolutions of the assembly, and a method for detecting revolutions of the assembly.

Abstract: A tire includes a crown reinforcement provided with a cord forming a plurality of circumferential turns, the cord disposed on opposite sides of a median zone of the tire. The circumferential tension of the cord varies axially along the tire. The circumferential tension of the cord on one side of the median zone diminishes in a direction directed away from one edge of the tire from an edge tension value to an inflection tension value, then increases in that same direction to a median zone tension value greater than the inflection tension value, and then decreases in that same direction back to the inflection tension value at the opposite side of the median zone.

Abstract: A ground-contacting component of a vehicle, consisting partly of polymeric compounds, in which at least one wireless temperature measurement system 7 based on surface acoustic wave or bulk acoustic wave technology is embedded in a region of a polymeric compound liable to reach temperatures above 100° C. and/or to be influenced by a surrounding region of a polymeric compound liable to reach temperatures above 100° C. during use of the vehicle. Also disclosed are a tire 1 and the use of a wireless temperature measurement system based on acoustic surface wave or bulk acoustic wave technology.

Abstract: The invention provides a transmission and/or reception device for mounting on a wheel of a vehicle and a housing for such a device. The device includes a tire information device configured to provide information relating to a tire. A transmitter/receiver is electrically connected to the tire information device. An antenna is electrically connected to the transmitter/receiver for transmitting and/or receiving radio frequency signals. A housing is configured to house the tire information device and the transmitter/receiver. The antenna is formed by winding a cable on an outside face of the housing.

Abstract: A vehicle suspension device includes a camber mechanism which imparts to the wheels a degree of freedom of the camber independently of vehicle rolls. The wheels are linked to the suspension elements so that the camber movement of each wheel permits, around a mean position of the wheel, an instantaneous centre of rotation (CIR r/s). A camber connection structure transmits the camber movements of one wheel to another wheel. The instantaneous position of the instantaneous centre of rotation within the camber plane for a zero camber of a wheel satisfies the following condition: Z?(0.75)Y?(0.12158)R, wherein Z and Y are the ordinate and abscissa, respectively, of the instantaneous position, and R is the wheel radius.

Abstract: A rubber composition based on at least (i) an elastomer, (ii) a reinforcing filler and (iii) a thiouronium salt or an analogue of a thiouronium salt of the formula (I) below: A-S—Y—S-A ??(I) in which, A represents a group associated respectively with a molecule HX or an ion X—, X denoting a halogen atom and Z denoting Incorporating the thiouronium salt into the vulcanizable rubber composition makes it possible to substantially reduce the reversion rate of the vulcanized rubber composition.

Abstract: A bridge patch for use with a tire is provided. The bridge patch modifies the magnitude, orientation, or both of the mechanical forces, and particularly the stress-strain relationship, imparted by the inner liner of a tire in order to obtain the desired stress-strain relationship for operating an electromechanical transducer element attached to the bridge patch. The bridge patch includes at least one pad configured for attachment to the inner liner of the tire, and a bridge member attached to the pad and separated from contact with the tire. In certain embodiments, bridge patch includes a bridge member that is arch-shaped and is connected to two pads, one each located on the ends of the bridge member.

Abstract: A device for storing and transferring strip sections of rubber produced intended for making a tire cover, includes a storage cylinder mounted to rotate about a horizontal axis of revolution on a frame which is in turn mounted on a support. A flexible strip forming a closed loop is movable around part of the cylinder. The cylinder and the flexible strip are suitable for clamping a strip section between one another. The frame is mounted to rotate on the support about a second axis oriented perpendicular to the axis of revolution of the storage cylinder.

Abstract: An elastomeric composition usable for the manufacture of tires, based on at least (i) a diene elastomer, (ii) an inorganic filler as reinforcing filler and (iii), as (inorganic filler/diene elastomer) coupling agent, a polysilylated organosilicon compound which is at least bifunctional and can be grafted onto the elastomer by means of a sulfur group having a polythiosulfenamide function, of formula: ?Si—A—Sx—NR1R2 ,??(I) in which: A is a divalent bond group, whether straight-chain or branched, which makes it possible to join the polythiosulfenamide group to a first silicon atom of the organosilicon compound; x is an integer or fractional number of from 2 to 4; R1 represents hydrogen, a monovalent hydrocarbon group, or R2; and R2 represents the grouping: —B—Si?, in which: B is a divalent bond group, whether straight-chain or branched; Si represents a second silicon atom of the organosilicon compound. The invention also concerns tires and tire treads comprising a composition of this type.

Abstract: A tread (1) for steer axle tires for a heavy vehicle, the tire having a preferred direction of travel, the tread comprising grooves (2) of generally circumferential orientation defining at least three ribs (30, 31, 32, 33, 34), two of the ribs forming the edges (30, 34) of the tread, some of the intermediate ribs (31, 32, 33) being provided with a plurality of incisions (41, 42, 43), of general transverse orientation and substantially parallel to each other, the incisions having an average inclination other than zero relative to the direction perpendicular to the running surface of a new tread, this tread being characterised in that, when viewed in a section plane perpendicular to the axis of rotation of the tyre, the incisions in the intermediate ribs form, on and in the vicinity of the running surface when new of the tread, an angle close to or equal to 0° with a line perpendicular to said surface at the point of intersection, whereas the angle of each of these incisions increases in the depth of the tread.

Abstract: The present invention relates to a modified crumb rubber particle having carbon to silicon bonds created by the reaction of the unsaturation in the crumb rubber particle and silicon hydride, with or without the use of a catalyst. Bound silicon content ranges from about 0.1% to 10% by weight. The silicon-modified crumb rubber can be used as is or a reinforcing filler in formulations. Typically the silicon-modified crumb rubber is used in up to 25% by weight of the total rubber present in virgin rubber compositions.