Abstract: The invention relates to a tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming with the circumferential direction angles of between 10° and 45°, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls. According to the invention, the ratio of the thickness of the crown block at one shoulder end to the thickness of the crown block in the circumferential median plane is less than 1.20 and the ratio of the axial width of the tread to the maximum axial width of the tire is strictly greater than or equal to 0.89.

Abstract: The invention relates to a tire, the aspect ratio H/S of which is strictly greater than 0.55, having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, crossed from one ply to the other forming angles of between 10° and 45° with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and the crown reinforcement comprising at least one layer of circumferential reinforcement elements. According to the invention, the ratio of the thickness of the crown block at one shoulder end to the thickness of the crown block in the circumferential median plane is less than 1.20 and the ratio of the axial width of at least one layer of circumferential reinforcement elements to the axial width of the tread is greater than 0.5 and preferably greater than 0.6.

Abstract: A cross-linkable or cross-linked rubber composition usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The composition is particularly applicable to tires of passenger-vehicle type. The rubber composition includes a plasticizing resin of number-average molecular weight of from 400 to 2000 g/mol, the resin having units resulting from the polymerization of a monocyclic or bicyclic unsaturated terpene, in a mass fraction of from 70% to 100%, and having a glass transition temperature greater than 50° C. and less than 120° C.

Abstract: The present subject matter generally concerns the detection of tire related anomalies in a pneumatic tire using Doppler Micro-Power Impulse Radar technology together with radar signal analyzation methodologies. More particularly, the present disclosure relates to methods and apparatus for the detection of anomalies in pneumatic tires including tread separation, tread wear, uneven tread wear, tire balance and foreign body detection. The signal analysis used differentiates various of the detectable anomalies by analyzing the radar signals based on ranges of harmonics.

Abstract: Technology is disclosed for characterizing both mass uneven distribution and high speed uniformity of a tire. Mass uneven distribution is identified from analysis of at least two radial run out (RRO) measurements, wherein a first RRO measurement is obtained for a relatively high speed of at least about 600 rotations per minute. A second RRO measurement may be at a relatively low speed less of at most about 180 rotations per minute if the effects of radial stiffness variation on the RRO is mall. If the effects of radial stiffness variation on the RRO can not be neglected, a third RRO at another high speed of at least above 600 rotations per minute is needed. RRO measurements are then decomposed into a plurality of harmonics and mass uneven distribution coefficients are calculated for the respective harmonics. The mass uneven distribution coefficients are then used to determine size and location of any mass unbalance, including mass uneven distribution and/or point mass.

Abstract: A technique for predicting the wear of at least one tire whose tread has pattern elements and which is fitted to a terrestrial motor vehicle, and a system for implementing the technique that enables a user, such as the vehicle's driver, to know reliably at any given moment the level of wear on the tire or on all the tires, or how long the residual wear will last, or even the remaining available running distance. Also, the piloting of drive-aid systems such as “ABS” (anti-block braking system) or “ESP” (electric programmed stability device) systems can be adapted as a function of the wear characteristics of the vehicle.

Abstract: A facility for the packaging of tyres includes a pre-packaging station where a given number of tyres constituting a unitary batch are arranged within an overall size in horizontal layers, a compression station at which the batch is compressed vertically in a direction essentially perpendicular to the plane of the layers, and a packing unit at which there are laid around the batch, under tension, straps of given width by wrapping a first strap about a first horizontal axis, and by helical winding a second strap about a second horizontal axis oriented perpendicular to the first axis. During the winding of straps, the batch is kept vertically compressed between two packing conveyors.

Abstract: The present invention is directed to a rubber composition comprising a diene elastomer, a reinforcing white filler, and a (white filler/elastomer) coupling agent, which is bifunctional and which can be bonded to the elastomer by means of a function X. The coupling agent X function is an ester function of an unsaturated ?-? acid bearing a carbonyl group on its ? position and having the general formula (X): where R, R1 and R2 may be the same or different, where R is a monovalent hydrocarbon radical, and where R1 and R2 may be a hydrogen atom or a monovalent hydrocarbon radical. The rubber composition of the present invention is useful for the manufacture of tires or semi-finished products for tires, such as tire treads.

Abstract: System state indicator in particular for a vehicle dashboard, the system having a given use potential and comprising evaluation means such that, on the basis of measurements related to the conditions of use of the vehicle and/or the physical characteristics of the system and/or the vehicle and/or the vehicle environment conditions, the evaluation means calculate at a time t parameters characteristic of the state of the system, characterized in that the state indicator simultaneously displays at time t at least three different parameters characteristic of the state of the system and its range.

Abstract: A machine for presenting a tire with the axis horizontal, allowing access to the inside of the tire, which has a frame bearing an upright on which a support for the tire is mounted for vertical translation, the support ensuring on its own the holding and rotation of the tire about its axis by being in contact with the latter solely via a toric section of the tire, this section being arranged substantially vertically when the tire is installed on the machine.

Abstract: A system for providing illuminated displays on a vehicle or wheel assembly includes one or more tire marking devices for integration with tire sidewalls or vehicle wheels. Such tire marking devices may include a plurality of point lights sources (such as LEDs or OLEDs operating at one or more wavelengths) arranged in a predetermined array configuration, a microprocessor coupled to each of the plurality of point light sources, a power source for powering the microprocessor and/or other device elements, and a timing sensor configured to provide one or more timing signals to the microprocessor. The timing signals generated by the timing sensor preferably include sufficient information to determine the rotational rate and relative position of the plurality of light sources. The microprocessor controls the flash sequence and duration of each point light source in the plurality of point light sources as they travel in a rotational path around the tire or wheel to which they are mounted.

Abstract: A pressure measuring and inflation/deflation control system for tires, comprising: a pressure sensor, a pressure variation detector capable on the one hand of responding in a safety time interval to a substantially significant and rapid variation in the pressure inside the cavity of the tire, and on the other hand of acting on another element cooperating with said detector; a management module, capable of receiving and processing informations provided by the pressure sensor on the one hand and on the other hand by the pressure variation detector and capable, on the basis of the information provided by the pressure variation detector, of actuating the shift from a so-called “normal” pressure measuring mode to a so-called “accelerated” measuring mode, or the shift from the “accelerated” mode to the “normal” mode.

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 process for cross-linking/expanding at least one cross-linkable, expandable blank, which is intended to form all or part of an elastomeric safety support for a tire in which: the cross-linking consists of curing the expandable or expanded blank in a bath of fluid at excess pressure which is contained in an enclosure, such that the blank interacts with the bath independently of the enclosure, the temperature of the bath having a maximum value of between 110° C. and 210° C. and the absolute pressure of said bath having at least a value equal to or greater than 14 bar, and the expansion consists of curing the cross-linkable or cross-linked blank in the bath, the temperature of the bath having a maximum value of between 110° C. and 210° C., and the absolute pressure of the bath having at least a value equal to or greater than 5 bar and a final pressure-relief value substantially equal to 1 bar, for expanding the blank such that its increase in volume is unlimited with respect to the enclosure.

Abstract: The invention concerns a process for obtaining credits for the emission of greenhouse gases produced by the circulation of a vehicle powered by a heat engine, in which: in a first stage, means are identified that can contribute towards a variation of the greenhouse gas emissions produced due to the circulation of the vehicle, in a second stage, the relation establishing that variation is determined, in a third stage, a certifying body guarantees the variation of the greenhouse gas emissions produced due to the circulation of the vehicle and related to the said means, in a fourth stage, an organization determines the attributable greenhouse gas emission credit.

Abstract: A method for designing tires for reduced cavity noise is directed to tires of the type having architectural elements comprising at least one carcass structure anchored in each side of the tire in a bead, each bead having a base which is intended to be mounted on the tire's design mounting rim, a side wall portion extending radially upward from each bead, a reinforced summit comprising reinforcement cords disposed at a given angle, and the side wall portions joining the summit. The method includes the step of arranging the architectural elements to provide a flexibility level of at least a portion of the summit to allow said portion to vibrate at a frequency substantially corresponding to the cavity mode.

Abstract: Device for fabricating a tire reinforcement by laying a cord 4 on a core 1. An actuation mechanism 3 is provided for transporting the cord laying element in a cyclic, back and forth movement, bringing it in successive cycles close to each of the ends desired for the cord in the said trajectory. The actuation mechanism comprises at least a main arm 31, a front auxiliary arm 32 and a rear auxiliary arm 33, the main arm 31 being articulated on the front auxiliary arm 32 and being mounted on the rear auxiliary arm 33 by a cam follower that cooperates with a slot 312.

Abstract: A drum (1) of variable diameter of generally cylindrical form, intended for the assembly of the belt plies and profiled elements constituting the crown of a tyre, comprising a set of first holding means (3) arranged circumferentially at the equator of the drum and suitable for making that part of the ply arranged level with these means adhere to the surface of the drum, and characterised in that it comprises a set of second holding means (4) suitable for making that part of the ply placed level with said second means alternately adhere to or slide freely on the drum, and which are arranged circumferentially and axially on either side of said equator over the entire surface of said drum (1).

Abstract: An aerosol transfer device for medical aerosol generators comprises an additional shaped element located in a vertical plane constituting an aerosol storage area. The additional element being designed with a first opening allowing movement of air from outside the storage area into the latter and being located on an upper or lower horizontal surface of the element in order to ensure vertical entry of air into the element, a second opening opposite said first opening allowing the escape of aerosol and a third opening for spraying aerosol into the storage area in the vertical plane of the storage area and in axial alignment with the first opening. The additional element has a minimum height of 6 cm and allows dispersion of the sprayed aerosol throughout the storage area without recycling the aerosol deposited on the walls of the storage area. The storage area is located between the aerosol generator source and the patient interface and allows, by means of a transport area, aerosol transport to the patient.