Abstract: According to some embodiments, the process includes the steps of: a) taking a sagittal preoperative x-ray of the vertebral column of the patient to be treated, extending from the cervical vertebrae to the femoral heads; b) on that x-ray, identifying points on S1, S2, T12 et C7; c) depicting, on the said x-ray, curved segments beginning at the center of the plate of S1 et going to the center of the plate of C7; e) identifying, on that x-ray, the correction(s) to be made to the vertebral column, including the identification of posterior osteotomies to make; f) pivoting portions of said x-ray relative to other portions of that x-ray, according to osteotomies to be made; g) performing, on said x-ray, a displacement of the sagittal curvature segment extending over the vertebral segment to be corrected; h) from a straight vertebral rod (TV), producing the curvature of that rod according to the shape of said sagittal curvature segment in said displacement position.

Abstract: Tire (1) comprising a directional tread (2) comprising a plurality of blocks (5) extending continuously along an overall curvature C from one of the edges (3) towards the centre (4) of said tread, all or some of the blocks (5) of the tread comprising a median sipe (10) of length S extending along a curvature C? substantially identical to the curvature C of the block, each block (5) comprising a central zone at an angle ?1 such that 35°??1?65°, an edge zone at an angle ?3 such that 0°??3?10°, and an intermediate zone between the central zone and the edge zone at an angle ?2 allowing continuity between the three zones, at least some of the blocks (5) being designed with a block chamfer (15) provided at the trailing edge in the intermediate zone and/or the edge zone.

Abstract: Tire comprising a directional tread that has two edges and a center. The tread comprises a plurality of blocks, each block extending continuously along an overall curvature C from one of the edges towards the center of the tread, forming a block central end provided with a central wall. Each block has a width WB and a length LB, this width increasing from the block central end in the direction of the edge. All or some of the blocks of the tread include a median sipe of length S and extending from the block central end along a curvature C? substantially identical to the curvature C of the block.

Abstract: Tire (1) comprising a directional tread (2) comprising a plurality of blocks (5) that are separated by grooves (9), all or some of the blocks (5) of the tread comprising a median sipe (10) of length S, each block comprising a central zone extending generally at an angle ?1 such that 35°??1?65° with respect to a transverse direction (Y), an edge zone extending generally at an angle ?3 such that 0°??3?10° with respect to the transverse direction (Y), and a joining zone between the central zone and the edge zone, the blocks (5) having a height H and, for two adjacent blocks, the width W of a groove (9) separating these two blocks in their central zone being determined such that H*0.6?W?H*0.8.

Abstract: Tire (1) comprising a directional tread (2) comprising a plurality of blocks (5) extending continuously along an overall curvature C from one of the edges (3) towards the centre (4) of said tread, all or some of the blocks (5) of the tread comprising a median sipe (10) of length S extending along a curvature C? substantially identical to the curvature C of the block, each block (5) comprising a central zone at an angle ?1 such that 35°??1?65°, an edge zone at an angle ?3 such that 0°??3?10°, and an intermediate zone between the central zone and the edge zone at an angle ?2 allowing continuity between the three zones, at least some of the blocks (5) being designed with a block chamfer (15) provided at the trailing edge in the intermediate zone and/or the edge zone.

Abstract: Tire comprising a directional tread that has two edges and a center. The tread comprises a plurality of blocks, each block extending continuously along an overall curvature C from one of the edges towards the center of the tread, forming a block central end provided with a central wall. Each block has a width WB and a length LB, this width increasing from the block central end in the direction of the edge. All or some of the blocks of the tread include a median sipe of length S and extending from the block central end along a curvature C? substantially identical to the curvature C of the block.

Abstract: A method for detecting wear of a tire involves at least one sonic wear gauge emitting an acoustic footprint noise that includes several acoustic footprint elementary frequency components. An acoustic signal that includes the acoustic footprint noise is acquired, with the acoustic signal including several elementary frequency components acquired in the frequency domain. Several series of elementary frequency components are enumerated, with each enumerated series forming some part of the acoustic footprint elementary frequency components. An acoustic footprint series is determined and, if a confidence index determined based on a local confidence index is greater or less than a predetermined threshold, an alert regarding the wear of the tire is emitted.

Abstract: The invention relates to a method for designing a curing mould for a tyre comprising at least one audible wear indicator, including the following steps (200-210): an initial population is defined, comprising a mould model having at least one characteristic relating to the wear indicator, a modified population is generated, comprising at least one mould model having at least one characteristic relating to the wear indicator produced by modifying at least one characteristic of at least one mould model of the initial population, at least one performance indicator is determined for each mould model in an evaluation population comprising at least one mould model of the modified population, based on at least one characteristic of each mould model of the evaluation population, one or more mould models of the evaluation population are selected on the basis of the performance indicator or indicators.

Abstract: In the course of the method for detecting the wear of a tyre (10) comprising a set of at least one sonic wear gauge (18) emitting an acoustic footprint noise comprising several acoustic footprint elementary frequency components, an acoustic signal liable to comprise the acoustic footprint noise is acquired (100), the acoustic signal comprising several elementary frequency components acquired in the frequency domain; several series of elementary frequency components are enumerated (206), each enumerated series being liable to form some part of the acoustic footprint elementary frequency components; an acoustic footprint series is selected (302) from among the enumerated series; a local confidence index of the acoustic footprint series is determined (306); if a confidence index determined on the basis of the local confidence index is greater or less than a predetermined threshold, an alert of the wear of the tyre (10) is emitted.