Abstract: A tire (1) for a heavy goods vehicle having a tread (2) with low road noise. Two consecutive rows of blocks are in the form of a chevron (6) of the tread (2) and are separated by a transverse cut-out in the form of a chevron (52) which extends continuously from one edge of the tread to the other so that the leading or trailing edges (41) of the blocks (4) are positioned in the same line (L) and any transverse cut-out in the form of a chevron (52) has a mean line (Lt) which is constituted by two branches (Lt1, Lt2) which each form, with the axial direction (YY?), a mean angle (B1, B2) at a minimum of 15° and at a maximum of 55°.

Abstract: A tire tread (1) for a heavy-duty vehicle to improve resistance to attack by stones. The tread (1) in the new state having at least one complex cut (5) with, along a mean line (Lm), an alternation of external cavities (6), opening onto the tread surface (2), and internal cavities (7), not opening onto the tread surface (2), two consecutive cavities, respectively an external cavity (6) and an internal cavity (7), being connected to each other by a connecting channel (8) of non-zero length, the height (H11) of each external cavity (6) being at least equal to half the height (H) of the complex cut (5), the height (H3) of each connecting channel (8) being at most equal to one third of the height (H) of the complex cut (5).

Abstract: The surface state of the treads of tires cured in a vulcanization mold manufactured by 3D printing represents an optimal compromise between cost, appearance, and grip performance of the tire. The texture is formed by an arrangement of contiguous elements of pyramidal shape, each element of pyramidal shape having a base of parallelogram type positioned on the tread surface, and an apex situated at a normal distance H from the base in the range 0.15 mm to 0.5 mm.

Abstract: A tread for a tire for a heavy-duty vehicle for mixed use and aims to improve the endurance of the crown of the tire following retention of stones in the tread. The tread (1) has voids (3) with a first, radially outer void portion (31) of groove type, having a width W11 on the tread surface (2), a width W12 at a groove bottom (311), and a depth H1, and a second, radially inner void portion (32) of sipe type, having a width W2 and a depth H2 and leading into the groove bottom (311) at a distance E with respect to the mean surface (S1) of the groove (31). The distance E is at least equal to the width W12 of the groove bottom (311) divided by 6.

Abstract: Systems and methods for analyzing tread surface data to assess tire tread parameters, such as irregular wear characteristics of a tire tread, are provided. For example, tread surface data, such as a tread surface map, can be processed to generate a convex hull for the tire. The convex hull can approximate the convex outer surface of the tire. The convex hull can be used as a reference for analyzing the tread surface data. In particular, irregular wear zones in the tire tread can be mathematically concave relative to the convex hull. Comparing the tread surface data to the convex hull can reveal information indicative of irregular wear characteristics of the tire. For instance, the local depth of the measured tread surface data relative to the convex hull can provide a quantitative measure of irregular wear characteristics of the tire.

Abstract: The invention includes tire treads, tires including the tire treads, and methods of forming a tire tread. The tire tread includes a length extending in a lengthwise direction, a width extending in a lateral direction, and a thickness extending in a depth-wise direction from an outer, ground-engaging side of the tread. The tire treads further include a sipe having a length, a height, a width, a thickness extending in a direction of the sipe width, and a cross-section taken along a plane extending in a direction of the sipe width and height, where the cross-section twists as the sipe thickness extends along the length of the sipe. Method of forming the tire tread includes molding into the tread a sipe and a void feature as recited herein.

Abstract: Systems and methods for analyzing tire tread data to assess tire tread parameters, such as irregular wear characteristics of a tire tread, are provided. More particularly, an automated and robust flattening process c be performed to transform tire tread data, such as a tread surface map, into flattened tire tread data. The flattened tire tread data can provide tread heights defined in a measurement direction that is normal to the surface of the tire tread, as opposed to parallel to a radial axis of the tire. The flattened tread data can be analyzed to assess one or more parameters of the tread of the tire. For instance, local height indicators for the flattened tread data can be determined using a local maximum as a reference. Because the local height indicators are relative heights determined from a local maximum, quantification of tread depth can be more easily obtained.

Abstract: Tire tread configured to reduce tread wear due to non-zero toe angle alignment and road crown, wherein the tire tread includes intermediate tread elements (28i) having first and second lateral sides (32A, 32B), the first lateral side (32A) extending in a direction of the tread thickness by a first lateral side angle (?A) relative to a radial reference direction and the second lateral side (32B) extending in a direction of the tread thickness by a second lateral side angle (?B) relative to a radial reference direction, whereby the tread is characterized in that the average lateral side angle equaling the average angle of all of the first and second lateral side angles for all of the plurality of intermediate tread elements along the length of the tread greater than 3 degrees or less than ?3 degrees

Abstract: Systems and methods for analyzing tread surface data to assess tire tread parameters, such as irregular wear characteristics of a tire tread, are provided. For example, tread surface data, such as a tread surface map, can be processed to generate a convex hull for the tire. The convex hull can approximate the convex outer surface of the tire. The convex hull can be used as a reference for analyzing the tread surface data. In particular, irregular wear zones in the tire tread can be mathematically concave relative to the convex hull. Comparing the tread surface data to the convex hull can reveal information indicative of irregular wear characteristics of the tire. For instance, the local depth of the measured tread surface data relative to the convex hull can provide a quantitative measure of irregular wear characteristics of the tire.

Abstract: Systems and methods for analyzing tire tread data to assess tire tread parameters, such as irregular wear characteristics of a tire tread, are provided. More particularly, an automated and robust flattening process c be performed to transform tire tread data, such as a tread surface map, into flattened tire tread data. The flattened tire tread data can provide tread heights defined in a measurement direction that is normal to the surface of the tire tread, as opposed to parallel to a radial axis of the tire. The flattened tread data can be analyzed to assess one or more parameters of the tread of the tire. For instance, local height indicators for the flattened tread data can be determined using a local maximum as a reference. Because the local height indicators are relative heights determined from a local maximum, quantification of tread depth can be more easily obtained.

Abstract: A suspended axle for a motor vehicle comprising a torsionally flexible beam (1), in which axle each wheel carrier (5) is mounted via a pivot (16) and, some distance away from the pivot, via a wheel-steering device, the steering device comprising a hydroelastic articulation, the device further comprises a steering operating system, the system comprising means designed to vary the volume of an incompressible fluid so as to bring about the steering of the wheel (2).

Abstract: A suspended axle for a motor vehicle comprising a torsionally flexible beam (1), in which axle each wheel carrier (5) is mounted via a pivot (16) and, some distance away from the pivot, via a wheel-steering device, the steering device comprising a hydroelastic articulation, the device further comprises a steering operating system, the system comprising means designed to vary the volume of an incompressible fluid so as to bring about the steering of the wheel (2).