A pneumatic tire has a tread having adjacent rib-shaped land portions (4) with circumferential grooves (3) therebetween. Annular elongate projection portions (5, 5) project toward each other from adjacent rib-shaped land portions (4). The elongate projection portions (5, 5) confronting each other are disposed with a spacing therebetween such that their mutually confronting tip surfaces (5s, 5s) make contact with each other due to elastic deformation of the rib-shaped land portions (4, 4) at the time of grounding of the tire. An inside groove space (6) is formed on a radially inner side of the confronting elongate projection portions (5, 5) and an outside groove space (7) is formed on a radially outer side of the elongate projection portions (5, 5). The tip surfaces (5s) of the elongate projection portions (5) are formed with a plurality of communication recesses (9) providing communication between the inside and outside groove spaces (6, 7). The communication recesses (9) are formed at intervals in a tread circumferential direction. It is thus possible to enhance rigidity of the rib-shaped land portions over the whole tread at the time of grounding of the tire, thereby to suppress elastic deformation of the rib-shaped land portions and to reduce rolling resistance, while securing a draining property attributable to the circumferential grooves.

A tire (1) comprising a tread (8), this tread comprising at least one channel (2), at least one wear indicator (3) disposed on the bottom of the channel (2), the wear indicator comprising a contact face (7) intended to come into contact with a road surface when the tire reaches a wear limit, the channel (2) comprising a texture (4) surrounding the wear indicator (3) and contrasting with the contact face (7) of the wear indicator.

Tire with radial carcass reinforcement having a tread of thickness E, this tread having a tread surface and at least one cut opening onto the tread surface to form edge corners. The cut extends into the tread over a total depth H. The cut is in the form of a sipe having a width D. There is also formed, in the vicinity, i.e. at a minimum distance from the said edge corner that is at most equal to five times the width D of the cut, of at least one edge corner of this cut and on the tread surface, at least one cavity having a depth h that is small in comparison with the depth of the cut, i.e. that is at most equal to 30% of the depth H. The at least one cavity reduces the compression rigidity of the tread in the vicinity of the the at least one edge corner.

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.

A tire comprising a tread, this tread comprising at least one channel and at least one wear indicator that is disposed on the bottom of the channel The wear indicator has a contact face which is intended to come into contact with a road surface when the tire reaches a wear limit. The contact face has a texture that contrasts with the bottom of the channel

The present invention includes tire treads having a plurality of lateral voids and methods of forming a tire tread having a plurality of lateral voids. The lateral voids of the tire treads each have a length extending primarily in the lateral direction of the tread, and where each of the plurality of lateral void features include a groove portion (18) and a sipe portion (26). Arranged at the bottom of each of the plurality of lateral void features is a submerged groove (28). Additionally or alternatively, each of the plurality of lateral void features include a groove bumper (32).

A pneumatic tire includes circumferential main grooves extending in the tire circumferential direction on the tread surface, and in widthwise outermost land portions, widthwise grooves extending from the tread edges inward in the tire width direction and widthwise sipes extending from the tire widthwise inner edge of the widthwise grooves inward in the tire width direction and connecting to the circumferential main groove. Each widthwise sipe includes a widened portion, by the sipe bottom, with a larger sipe width than at the tread surface. A rectangle ratio is 0.8 or more. Each widthwise sipe extends at a first angle relative to the tire width direction in plan view of the tread surface. In a tire radial region containing the widened portion, the widened portion extends at a second angle smaller than the first angle relative to the tire width direction, or partially extends along the tire width direction.

Disclosed is a module for transporting a fluid, including a woven structure forming a tubular pipe and at least one end connector placed at one end of the woven structure, the end connector including a main body delimiting an internal channel for the passage of the fluid. According to the invention, the internal wall of the body delimiting the channel, or the external wall of the body delimiting the external lateral surface of that body, being annular and having at least one shoulder defining an internal, respectively external, bearing face for the reception of at least one ring, the free end of the woven structure is anchored in the connector only by friction of the faces of the free end with the surfaces of the ring or rings and the internal, respectively external, wall of the main body.

The invention provides for a heavy truck tire tread (1) having a longitudinal direction, a lateral direction and a thickness direction, said tread having a ground-engaging contact surface (CS) and comprising at least four main longitudinal grooves (3, 4, 5, 6) defining at least five main longitudinal ribs (9, 10, 11, 12, 13), the at least four main longitudinal grooves comprising at least one and not more than three open grooves (3, 6) and at least two partially hidden grooves (4, 5), each of said at least two partially hidden grooves comprising openings (41, 51) to the ground-engaging contact surface (CS) and an undersurface channel (42, 52) that is connected to the openings by ducts (43, 53) extending substantially in the thickness direction, longitudinal sipes (44, 54) extending substantially along the longitudinal direction connecting successive openings to the channel, said tread comprising at least two non-shoulder main ribs (10, 11, 12), said at least two non-shoulder main ribs comprising lateral sipes (105, 115, 125) extending in the lateral direction, the tread comprising at least 120 of said lateral sipes, wherein for each partially hidden groove: a total surface area of all openings is less than 200 cm2; an average height of said channel is greater than 5 mm; and an average section area of said channel is greater than 15 mm2.

The tread has main grooves that delimit a central region of a width comprised between 15 and 25% of a total width W and that define the wearable thickness of the tread. The tread also has lateral regions on each side of the central region, and the lateral regions are divided into raised elements. The elongate elements are delimited by oblique secondary grooves which are inclined by a mean angle of between 35 degrees and 55 degrees with respect to the circumferential direction and have a depth P5 which is between 30% and 60% of the depth P. Each elongate raised element has an oblique cut which divides the element into two elongate element halves, and each oblique cut is formed by a sipe extended by an internal canal. The internal canal forms a new groove once the tread is partially worn before the oblique secondary grooves completely disappear.