Abstract: It is an object to provide a method for producing magnetic microparticles, which produces monodispersed magnetic microparticles, causes no clogging with a product due to self-dischargeability, requires no great pressure, and is excellent in productivity. In the method for producing magnetic microparticles, at least two fluids are used, and at least one kind of the fluids is a fluid containing at least one kind of magnetic raw material, and at least one kind of the fluids other than the above fluid is a fluid containing at least one kind of a magnetic microparticles-separating agent, and the respective fluids join together in a thin film fluid formed between two processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, whereby magnetic microparticles are separated in the thin film fluid to obtain the magnetic microparticles.

Abstract: Disclosed is an apparatus and methodology for detecting anomalies in cables within a tire structure. A plurality of magnetic field sensitive sensors are aligned within a magnetic field provided by a magnet. The alignment of sensors and magnet is such that flux lines from the magnet are generally parallel to the plane occupied by the magnetic sensors. A tire cable anomaly present between the magnetic field sensitive sensors produces a detectable difference in signals produced by the magnetic field sensitive sensors as a result of the formation of perpendicular flux patterns produced by the anomaly. A signal processing circuit receiving input signals from the sensors evaluates differences between the signals from each of the plurality of sensors by pairing the output signal from each sensor with the output signal from each of the others of the plurality of sensors and produces an output signal upon the differences meeting selected criteria.

Abstract: The present invention relates to a rubber composition based on at least an epoxidized natural rubber—, a reinforcing filler and, as plasticizing agent, an alpha-methylstyrene polymer resin. The invention also relates to the use of such a composition for the manufacture of a tyre tread exhibiting an improved compromise of properties with respect to grip on wet ground and rolling resistance.

Abstract: A method is presented for predicting a noise/comfort performance in a cabin of a vehicle with a body-shell and a suspension system linked to the body-shell by at least one point of attachment, with the vehicle rolling at a given speed on a rolling device with a macrorough rolling surface. The method includes: determining a global transfer function of the body-shell, determining a global admittance of the body-shell, determining an impedance of the suspension system, determining, while rolling on the macrorough rolling surface, lockup loads of the suspension system, and combining together the global transfer function of the body-shell, the global admittance of the body-shell, the impedance of the suspension system, and the lockup loads of the suspension system to obtain a prediction of noise/comfort performance (P) inside the cabin.

Abstract: Tires in use wear in a host of ways. One negative manner in which tires, especially truck tires, may wear is in an irregular fashion. When this phenomenon happens, the tread of the tire may become unusable, forcing the user to replace the tire, which is undesirable. This patent application poses a new and useful way of preventing irregular wear involving the addition of a predetermined configuration of pipes, increasing the useful life of the tire tread.

Abstract: Methods and apparatus for applying a patch to an interior surface of a tire, the apparatus comprising a patch holder having the top surface shaped to a contour of the interior surface of the tire, the patch holder comprising a patch receptacle and a plurality of orifices extending there through in fluid communication with a vacuum source, and, an adhesive barrier surrounding the patch receptacle. The steps of a method include placing a patch into a patch receptacle in a tire patch holder, the patch holder having the top surface shaped to a contour of the interior tire surface, directing the patch holder to obliquely contact the interior surface of the tire, and, pressing the patch into substantial adhesive contact with the interior tire surface.

Abstract: A core (N) defining at least partially a manufacturing form whose receiving surface (S), which is of essentially toroidal appearance, is designed to receive directly, by winding, profiles (B) in the form of contiguous bands forming the inside surface of a tire, comprising a plurality of segments (10, 10d, 10i), each having transverse faces (110d, 111d, 110i, 111i), said segments being circumferentially adjacent and located side by side, bearing against each other via their transverse faces, in which core the connecting radius (r) between the transverse face and the receiving surface (S) of a segment (10d, 10i) is between 0.8 mm and 1.5 mm, along all or part of the length of the edge formed by the intersection of these two surfaces.

Abstract: A tire is provided that includes a crown with a mid-plane S, two sidewalls, a first bead, of diameter ?1, intended to be positioned on the outboard side of a vehicle, and a second bead, of diameter ?2, intended to be positioned on the inboard side of a vehicle, such that ?1>?2. When the tire is mounted on its working rim and inflated to its nominal pressure, the mid-plane S of the crown is axially offset towards the first bead relative to a mid-plane B of the beads by a positive or zero distance D.

Abstract: Tire comprising a crown surmounted by a tread, a crown reinforcement, two sidewalls and two beads, a carcass reinforcement passing into the two sidewalls and anchored by means for anchoring in the two beads, said anchoring means comprising, in at least one bead, a circumferential alignment of at least one anchoring reinforcing member oriented circumferentially and cooperating with a rubber composition referred to as ‘anchoring rubber’; this tire is characterized in that this anchoring reinforcing member is a metal cable having two layers of construction M+N comprising an inner layer C1 of M wires of diameter d1 wound together in a helix at a pitch p1, this layer C1 itself being surrounded by an outer layer C2 of N wires of diameter d2 wound together in a helix at a pitch p2, this anchoring cable furthermore having the following characteristics (d1, d2, p1 and p2 in mm): 2?M?4 M+3?N?M+7 0.25<d1<0.40; 0.25<d2<0.40; 3.5<p1<7<p2<14.

Abstract: Tread band for a tire having a tread surface and comprising a plurality of recesses of total depth H* opening onto the tread surface, each recess comprising at least two cavities of a first type of cavities, each of these cavities of a first type being delimited by a main wall and having a depth Hi, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the said wall that are furthest towards the outside of the tread forms an exterior contour that is closed and of length Ce, the main wall of each cavity of the first type is such that its intersection with a virtual surface parallel to the running surface in the new condition and passing through the points of the main wall furthest towards the inside of the tread forms an interior contour which is closed and of length of length Ci, this tread band being characterized in that the cavities of a first type are arranged at different l

Abstract: Equipment for treating a matter to be treated more stably and uniformly between approaching/receding treatment planes in a treatment section where at least one plane can rotate relatively to the other plane. Treatment is performed by introducing a first fluid containing a matter to be treated between the treatment planes, introducing a second fluid containing the matter to be treated between the treatment planes from a channel independent from the channel which introduced the first fluid and communicating with the space between the treatment planes and then mixing and stirring them between the treatment planes. The outlet portion of the channel introducing the second fluid to the space between the treatment planes is provided with a plurality of split channels.

Abstract: A method for measuring inflation pressure of a vehicle tire involves measuring a compressive stress. The tire includes a rubber mass, referred to as an interior rubber, delimited by an internal surface in contact with air inside the tire and an external surface in contact with a carcass ply of the tire. The compressive stress in the interior rubber of the tire, between the internal and external surfaces of the interior rubber, is measured and the inflation pressure is deduced from this compressive stress.

Abstract: Tubeless tire, adapted to be inflated with an inflation gas, comprising: a crown (25) comprising a crown reinforcement (80, 90) surmounted by a tread (40); two sidewalls (30) extending the crown radially inwards; two beads (20) radially inside the sidewalls and each comprising a annular reinforcement structure (70); a carcass reinforcement (60) anchored in each of the beads; an inner-liner (50) impermeable to the inflation gas, covering the inner surface of the tire; wherein, in each sidewall of the tire, the inner-liner comprises at least one slit (200), situated radially between the annular reinforcement structure that is radially outermost, and the radius RE at which the carcass reinforcement, when the tire is fitted to the rim and inflated to its operating pressure, has its largest axial width, the slit having a maximum radial height HR of between 0.5 and 5 mm and extending over at least half of the circumference of the tire. Also disclosed is a process for manufacturing such a tire.

Abstract: A magnetometric device for evaluating a physical parameter (D, K), comprising a circuit (1) which is sensitive to a magnetic field, a measurement circuit (2) and a magnetic field generator (3), the sensitive circuit (1) being subjected to a magnetic field which varies with the physical parameter to be measured and having an electrical characteristic which is evaluated by the measurement circuit and which varies as a function of the magnetic field. The field generator (3) is designed to reverse the polarity of the applied magnetic field, the evaluation of the physical parameter thus being able to be corrected of the parasitic influence of the terrestrial magnetic field.

Abstract: A heavy vehicle tire comprising at least four working plies formed of reinforcing elements which, from one ply to the next, cross one another, and comprising at least one protective ply. The tire is supplemented on each side of the circumferential mid-plane by a single working half-ply the reinforcing elements of which make an angle greater than 30° with the circumferential direction, the half-ply being radially on the inside of and adjacent to the radially outermost continuous working ply, its axially outer end being axially on the outside of the ends of the continuous working plies, and the reinforcing elements of the half-ply, the reinforcing elements of the radially outermost continuous working ply and the reinforcing elements of the protective ply the end of which is axially on the outside of the ends of the working plies being oriented in the same direction.