Abstract: A method of controlling a switching frequency of an inverter, the method comprising the steps of: measuring a signal indicative of a temperature variable at a first switching frequency to determine a measured temperature variable; comparing the measured temperature variable to a first threshold; determining if the measured temperature variable is above the first threshold; if the measured temperature variable is not above the first threshold, calculating the temperature variable at a second switching frequency; if the temperature variable calculated at the second switching frequency is less than the first threshold, setting the switching frequency of the inverter to the second switching frequency.

Abstract: A rubber composition used for forming a tread of a tire includes an elastomer matrix, a reinforcing filler, and a coupling agent. The elastomer matrix includes from 60 to 95 phr of at least one diene elastomer and from 5 to 40 phr of a polar thermoplastic elastomer (TPE). The polar TPE includes at least one elastomer block and one polar thermoplastic block selected from a homopolymer or copolymers of an alkylacrylic acid ester, with an alkyl radical containing 1 to 4 carbon atoms. The reinforcing filler includes a reinforcing inorganic filler. The presence of the polar TPE makes it possible to improve a compromise of wet grip and dry grip performances of the tread.

Abstract: A method for modifying a resin which comprises the reaction of an unsaturated resin consisting of more than 95% by mass of carbon and hydrogen atoms with a hypohalogenous compound in at least one solvent in the presence of a hydroxylated compound. This method results in the synthesis of new resins having oxygenated and halogenated functions.

Abstract: A process for preparing a carbon species partially or completely covered with silica, including: bringing the carbon species into contact, in an aqueous medium, with one or more cationic surfactants, adjusting the pH of the reaction medium of the suspension using an alkaline agent to a pH that varies from 8 to 10, adding one or more alkali metal silicates to the reaction medium obtained, while maintaining the pH of the reaction medium between 8 and 10.

Abstract: The plug guide comprises a bore for receiving a nail comprising a head and a shaft onto which a skirt is slid, the bore having a passing section determined so that the head and the skirt of the nail cause it to be guided therein, a recess being provided in the front part of the plug guide for ejecting and expanding the guiding skirt. The recess comprises at least one radial bulge projecting inside, for extending the wall of the bore of the plug guide and forming a narrowing for guiding the nail. This invention further relates to a fastening device comprising the plug guide.

Abstract: A rotating electrical machine includes a rotation shaft rotatably installed in a bearing that includes a portion secured onto the shaft and a portion removably attached to a supporting surface connected to a casing. The supporting surface includes an axial abutment for the bearing and a passageway traversed by the shaft. A resolver of the machine includes a resolver stator connected to the casing, and a resolver rotor having a diameter less than that of the passageway. The resolver rotor is attached to the shaft on an opposite side of a drive rotor relative to the bearing. A longitudinal position of parts installed on the shaft is determined such that, during installation, a transverse face of the bearing reaches an entrance of a cavity of the resolver stator before a transverse end of an external radial wall of the resolver rotor of the resolver reaches the entrance of the cavity.

Abstract: A method and apparatus are provided for automatic and hands-free threading of an elastomeric mix into a calender set of rolls comprising one or more pairs of rolls that have a nip between them. A wedge is provided with a tip that is positioned downstream from the nip and at a predetermined distance from the nip. As the rolls of the nip are rotated, the tip of the edge removes all, or a desired portion of, the elastomeric mix from a first roll of the nip so as to transfer the elastomeric mix to a second roll of the nip. The tip of the wedge may be placed into contact with the first roll. The wedge may also have an arcuate surface, shaped e.g., like the outer surface of the first roll, and positioned a predetermined distance from the outer surface of the first roll.

Abstract: A method for determining the aerodynamic moment of resistance Maero-EM of a wheel by calculating the variation with respect to time, of the product of the rotational speed of at least one wheel set in rotation about an axis and of the inertia of the said wheel about the said axis, the wheel being equipped with a device for picking off and recording the numerical values of its rotational speed. The wheel is protected by a removable cap and in is subjected to a flow of air.

Abstract: Tread for a tire for the driven axle of a heavy goods vehicle, comprising a plurality of circumferential grooves delimiting at least three ribs each having a height and a width measured in the axial direction, axially delimited by two edge rows, each rib having a plurality of sipes able to close at least in part as they enter the contact patch, and opening onto each lateral face of the rib to form two edge corners and having a depth at least equal to 50% of the height of the rib, these sipes in pairs delimiting an elementary rib volume and an elementary contact surface, wherein each elementary volume delimited by two sipes of one and the same rib has a void volume opening on the contact face in the new state, having a total area on the tread surface at least equal to 0.4% and at most equal to 1.

Abstract: A rubber composition based on at least one diene elastomer, a reinforcing filler, a crosslinking system, an epoxy resin, at a content within a range extending from 1 to 20 phr, and a polyimine hardener, at a content within a range extending from 0.2 to 15 phr.

Abstract: A collapsible tire for a motorized two-wheeled vehicle, containing a carcass reinforcement possibly surmounted radially from the outside by an inextensible crown reinforcement, itself radially on the inside of a tread, the reinforcements each containing at least one layer of reinforcing elements, the tread connected to two beads by two sidewalls, the beads intended to come into contact with a rim, each bead containing at least one circumferential reinforcing element called a bead wire, the bead wire defining a mean line forming a substantially circular closed curve in a circumferential plane. The bead wire is flexible and contains at least one concave part Pc of smaller radius Rc and of center of curvature Cc, and contains at least one unwrapped metal cord the carbon content of which is comprised between 0.5 and 0.9%. A method of collapsing the tire and to a use of the tire.

Abstract: Tire comprising two beads comprising a bead wire and a carcass anchored around the two bead wires by turning back, a squat filler of small height, a sidewall stiffening reinforcement which is metallic, an outer strip of soft rubber compound, placed axially on the outside of the carcass and of the filler, and a protective layer of rubber compound, wherein the assembly formed by the stiffening reinforcement and the outer strip has a thickness EB(R) and the protective layer has a thickness EE(R), R being the distance with respect to the radially innermost point of the bead wire, and wherein the thicknesses EB(R) and EE(R) satisfy a set of geometric conditions.

Abstract: A rubber composition based on at least one diene elastomer, a filler that contains carbon black and an inorganic filler, and a crosslinking system, wherein the inorganic filler content is greater than or equal to 5 parts by weight per hundred parts by weight of elastomer, phr, and represents at most 50% as a weight fraction of the whole of the total filler of the composition, and wherein the carbon black includes at least one acetylene-derived carbon black, with a content of greater than 3 phr, the amount of acetylene-derived carbon black representing more than 50% of the carbon black present in the composition as a weight fraction, and wherein the composition contains a plasticizing oil or a plasticizing resin with a total content of plasticizing oil and plasticizing resin of less than 30 phr.

Abstract: Disclosed is an apparatus for providing an RFID device for integration into a tire. A printed circuit board (PCB) is provided with a pair of asymmetric arms forming notches in opposed ends of the PCB. Helically wound antenna elements are positioned in the notches such that the ends of the asymmetric arms are positioned adjacent the nearest approach of the individual helically wound antenna elements.

Abstract: The present invention provides spoke geometry for a non-pneumatic tire that is less prone to fatigue when used. In particular, the spoke geometry is provided with an optimized thickness profile over the length of the spoke. This optimization results in a reduction in the peak strain energy density levels in the spoke, thereby reducing the likelihood of crack initiation and propagation which in turn enhances the durability of the spoke and tire.

Abstract: The present invention addresses the problem of providing a method for producing nickel microparticles in which the ratio of crystallite's diameter to the particle diameter of the nickel microparticles is controlled. At least two types of fluids to be processed are used, including a nickel compound fluid in which a nickel compound is dissolved in a solvent, and a reducing agent fluid in which a reducing agent is dissolved in a solvent. Sulfate ions are included in the nickel compound fluid, and polyol is included in the nickel compound fluid and/or the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces (1, 2), at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and nickel microparticles are precipitated.

Abstract: A plate heat exchange for homogenous fluid flows between ducts is provided. The plate heat exchanger includes a plurality of primary plates, wherein are made a plurality of primary passages; a plurality of secondary plates, wherein are made a plurality of secondary passages; first and second collectors for supplying secondary fluid and a collector for discharging the secondary fluid, made in the primary and secondary plates and extending substantially perpendicularly to the primary and secondary plates, the primary and secondary plates being parallel to a determined longitudinal axis and having a common middle plane containing the longitudinal axis; the secondary discharge collector is located at a first longitudinal end of the primary and secondary plates in the middle plane, the first and second secondary supply collectors being located at a second longitudinal end of the primary and secondary plates opposite to the first, symmetrically relatively to the middle plane and away from the middle plane.

Abstract: Method of manufacturing a tread of a tire made of rubber compound, the said tread comprising a tread surface, at least one groove having a bottom wall and two lateral walls extending from the bottom wall towards the tread surface, and at least one flexible wall arranged in the said groove in such a way as to be able to flex as liquid flows, the said method including molding the tread with at least one groove and at least one connecting element of a thickness equal to that of the wall which element is arranged inside the groove transversely to the longitudinal axis thereof, so that, after vulcanizing, the connecting element connects the lateral walls to the bottom wall over a given depth from the latter cutting the said connecting element at its junction with each of the lateral walls of the groove so as to obtain the flexible wall.

Abstract: An improved method and apparatus for creating a representation of transferred torque (?tr) over a rotation angle interval (?) for a torque transferring system wherein the torque transferring system includes at least two meshing gears, a torque meter for monitoring the transferred torque (?tr) in the torque transferring device, and an angular meter arranged to monitor an angular position (?) of at least one of the meshing gears over at least one angular interval (?int). Further, the system includes a processor that is adapted to: map the transferred torque (?tr) to the monitored angular interval (?int) and create a representation of the transferred torque (?tr) over said angular interval (?int), analyze said representation in order to identify deviations from an expected representation, and based on said analysis determining a gear condition of at least one of the at least two meshing gears in the torque transferring device.

Abstract: The invention relates to a surface suitable for filtering a plurality of frequency bands, said surface including a set of separate identical basic conductive units (31) that are reproduced in a periodic arrangement on a dielectric substrate (10). The basic unit includes: a tripole consisting of three identical segments (12) that extend radially from a center (14); and two arms (32) that extend symmetrically from an intermediate point of each segment, said intermediate point being located at a common distance (Db) from the center (14) for each of the segments (12). The general directions of both arms form an angle of approximately 120° and define an arrowhead pointed toward the outside, wherein the arms (32) corresponding to two separate segments (12) do not intersect.