Abstract: A tire comprises a sealing layer comprising a junction (21) extending in a main direction (D4) forming, with the circumferential direction (Z) of the tire: in a portion (15S) of the sealing layer extending axially in radial line with the working layer, an angle (ES) ranging, in absolute value, from 20° to 60°, and in a portion (15F) of the sealing layer extending radially in each sidewall, an angle (EF), in absolute value, strictly greater than the angle (ES) of the main direction (D4) of the junction (21) in the portion (15S) of the sealing layer extending axially in radial line with the working layer.

Abstract: Drum (10) for manufacturing a tire blank, comprising a shaft, two flanges (14) movable in translation along the shaft, and means for supplying compressed air, each flange comprising at least one pneumatic effector (36). At least one flange comprises a first, radially internal ring (46) and a second, radially external ring (48) movable in rotation around the first ring by means of at least two airtight pivot connections (50), the rings and the pivot connections delimiting at least one sealed chamber (52), said flange comprising at least one first compressed-air circulation channel (54), a first section (56) of the first channel belonging to the first ring being connected at one of its ends to the sealed chamber, and a second section (58) of the first channel belonging to the second ring being connected at one of its ends to the sealed chamber.

Abstract: A method for manufacturing a tire comprising a carcass reinforcement comprising a carcass layer and a working reinforcement comprising a single working layer comprising forming, around a support, a wound carcass assembly (52) intended to form the carcass layer and a wound working assembly intended to form the working layer, and then deforming the support. The wound carcass assembly (52) is formed so as to form either a junction (56) by abutment without forming a superposition, or a junction (56) by overlapping, or without forming a junction.

Abstract: A tire comprises a crown reinforcement comprising: a working reinforcement comprising a single working layer and a hoop reinforcement arranged radially outside the working reinforcement and comprising at least one hooping filamentary reinforcing element (170) wound circumferentially helically so as to extend axially from one axial edge to the other axial edge of the hoop reinforcement. The or each hooping filamentary reinforcing element (170) consists of: two multifilament strands (1701, 1702) of aromatic polyamide or aromatic copolyamide and one multifilament strand (1703) of aliphatic polyamide or of polyester, or three polyester multifilament strands, each multifilament strand (1701, 1702, 1703) being wound in a helix around a main axis (W) common to the three multifilament strands (1701, 1702, 1703). The hoop reinforcement has a tangent modulus at 1.3% elongation ranging from 200 to 650 daN/mm.

Abstract: The molding element has a plurality of contacting element delimited by grooves, the molding element having a molding surface for forming a contact face of the contacting element intended to come into contact with ground during rolling and a groove forming rib portion for forming the groove comprising two opposed rib side faces for forming two opposed groove side faces and a rib top face connecting two rib side faces for forming a groove bottom, the groove forming rib portion providing a space opening to at least one of the rib side faces and/or to the rib top face and an insert being received in the space for forming a portion of the groove and a closing device in the groove, the insert comprises at least one notched plate of thickness t1, the notched plate includes at least one notch for forming a flexible fence of the closing device.

Abstract: The molding element has a plurality of contacting elements delimited by a plurality of grooves and has a molding surface for forming a contact face and a groove forming rib portion for forming the groove. The groove forming rib portion provides a space opening to one of the rib side faces and/or to the rib top face and an insert that is received in the space for forming a portion of the groove and a closing device in the groove. The insert is composed of thin plates stacked with one another. The forming plate assembly also comprises at notched plates of thickness t1, and each notched plate includes a notch for forming a flexible fence, and the notched plate has no area overlapping to the notch in the other notched plated adjacent thereto in sectional view in a direction along which the groove forming rib portion extends.

Abstract: A spoke (100) for a non-pneumatic wheel. The spoke comprises a reinforcement structure (124) having reinforcement elements (130) and can comprise one or more layers of material. The spoke can also be provided in various shapes and configurations. The spoke includes anchors (112, 114) that allow the spoke to be more readily incorporated into, or removed from, a non-pneumatic wheel.

Abstract: A non-pneumatic tire having a compliant tread band (58) and a plurality of spokes (100) each having a web-like body (102), and each body (102) containing a number of elongate reinforcement elements (124) oriented in the radial direction of the tire. The radially-outer portion of each spoke extends proximate to the adjacent radially-outer portion of the adjacent spoke.

Abstract: Drum (10) for manufacturing a tire blank, comprising a shaft, two flanges (14) movable in translation along the shaft, and means for supplying compressed air, each flange comprising at least one pneumatic effector (36). At least one flange comprises a first, radially internal ring (46) and a second, radially external ring (48) movable in rotation around the first ring by means of at least two airtight pivot connections (50), the rings and the pivot connections delimiting at least one sealed chamber (52), said flange comprising at least one first compressed-air circulation channel (54), a first section (56) of the first channel belonging to the first ring being connected at one of its ends to the sealed chamber, and a second section (58) of the first channel belonging to the second ring being connected at one of its ends to the sealed chamber.

Abstract: The tread is provided with a plurality of grooves and/or a plurality of incisions. The tread also has rubber layers laminated in a radial orientation. One rubber layer has a cap rubber layer and a base rubber layer. A modulus G* of the rubber composition constituting the base rubber layer is no more than 2 MPa at ?10° C. with imposed shear stress of 0.25 MPa and is at least 0.7 MPa at 40° C. with imposed shear stress of 0.70 MPa. A modulus G* of the rubber composition constituting the cap rubber layer is at least 1 MPa higher than the modulus G* of the the base rubber layer at ?10° C. with imposed shear stress of 0.25 MPa and is less than the modulus G* of the rubber composition at 40° C. with imposed shear stress of 0.70 MPa.

Abstract: The molding element has a plurality of contacting element delimited by grooves, the molding element having a molding surface for forming a contact face of the contacting element intended to come into contact with ground during rolling and a groove forming rib portion for forming the groove comprising two opposed rib side faces for forming two opposed groove side faces and a rib top face connecting two rib side faces for forming a groove bottom, the groove forming rib portion providing a space opening to at least one of the rib side faces and/or to the rib top face and an insert being received in the space for forming a portion of the groove and a closing device in the groove, the insert comprises at least one notched plate of thickness t1, the notched plate includes at least one notch for forming a flexible fence of the closing device.

Abstract: The molding element has a plurality of contacting elements delimited by a plurality of grooves and has a molding surface for forming a contact face and a groove forming rib portion for forming the groove. The groove forming rib portion provides a space opening to one of the rib side faces and/or to the rib top face and an insert that is received in the space for forming a portion of the groove and a closing device in the groove. The insert is composed of thin plates stacked with one another. The forming plate assembly also comprises at notched plates of thickness t1, and each notched plate includes a notch for forming a flexible fence, and the notched plate has no area overlapping to the notch in the other notched plated adjacent thereto in sectional view in a direction along which the groove forming rib portion extends.

Abstract: The disclosure is related to a tread for a tire, this tread having a tread surface intended to come into contact with a roadway and comprising at least one groove of width W and depth P delimited by two facing lateral walls, these lateral walls being connected together by a groove bottom. At least one groove has a plurality of closing devices for reducing the running resonance noise generated by this groove, each closing device comprising at least two sets of flexible blades, a first set is connected to the bottom of the groove and is intended to flex around a first axis, and at least one second set connected to a lateral wall delimiting the groove, this second set being intended to flex around a second axis, this second axis being different than the first axis.

Abstract: The tread is provided with a plurality of grooves and/or a plurality of incisions. The tread also has rubber layers laminated in a radial orientation. One rubber layer has a cap rubber layer and a base rubber layer. A modulus G* of the rubber composition constituting the base rubber layer is no more than 2 MPa at ?10° C. with imposed shear stress of 0.25 MPa and is at least 0.7 MPa at 40° C. with imposed shear stress of 0.70 MPa. A modulus G* of the rubber composition constituting the cap rubber layer is at least 1 MPa higher than the modulus G* of the the base rubber layer at ?10° C. with imposed shear stress of 0.25 MPa and is less than the modulus G* of the rubber composition at 40° C. with imposed shear stress of 0.70 MPa.

Abstract: The disclosure is related to a tread for a tire, this tread having a tread surface intended to come into contact with a roadway and comprising at least one groove of width W and depth P delimited by two facing lateral walls, these lateral walls being connected together by a groove bottom. At least one groove has a plurality of closing devices for reducing the running resonance noise generated by this groove, each closing device comprising at least two sets of flexible blades, a first set is connected to the bottom of the groove and is intended to flex around a first axis, and at least one second set connected to a lateral wall delimiting the groove, this second set being intended to flex around a second axis, this second axis being different than the first axis.

Abstract: A pneumatic tire tread that maintains a good level of water drainage performance up to the final stage of wear of a tread part formed with a plurality of flexible fences which are disposed inside at least one main groove extending from the bottom surface of the main groove and obstructing at least 70% of the cross-sectional area of the main groove, the flexible fences comprising an inside portion having a connecting part which is connected to the main groove, and an outside portion which is radially outside a predetermined height D1 from the bottom surface of the main groove, and the average angle of inclination of the inside portion with respect to a line perpendicular to the surface of the tread part in contact with the road surface is greater than the average angle of inclination of the outside portion.

Abstract: The subject of the disclosure is a tread for a tire, this tread having a tread surface intended to come into contact with a roadway and comprising at least one groove of width W and depth P delimited by two facing lateral walls, these lateral walls being connected together by a groove bottom. At least one groove has a plurality of closing devices for reducing the running resonance noise generated by this groove, each closing device comprising at least two flexible blades, a first flexible blade secured to the bottom of the groove and intended to flex around a first axis, and a second flexible blade secured to a lateral wall delimiting the groove and intended to flex around a second axis, the first flexible blade connected to the bottom having a maximum height H.

Abstract: Tread having a tread surface intended to come into contact with a road surface and comprising at least one groove of width W and of depth P delimited by two walls facing one another, these walls being joined together by a groove bottom, at least one groove comprising at least one closure device for at least partially closing this groove as it passes through the contact patch, each closure device comprising at least one flexible blade of suitable thickness that allows it to flex under the effect of a circulation of liquid, this at least one flexible blade projecting from the bottom of the groove, each flexible blade being delimited by a contact wall intended to come into contact with the road surface and by end walls each facing a wall delimiting the groove and lateral walls, this tread further comprising at least one passage between the bottom of the groove and each blade of the device, this passage being intended to ensure a minimal flow of water when driving on a water-covered road surface.

Abstract: A molding element for a mold for vulcanizing a tread of a tire, comprising a base able to mold part of the tread surface of the tread and a bar able to mold a groove in the tread, the bar comprising two lateral faces extending along its length and projecting from the base and an upper face connecting the lateral faces. The molding element comprises a contact edge formed by the base and the bar, intended to come into contact with another molding element to form all or part of the vulcanizing mold, and further comprising at least one recess in the bar, which opens onto one of the lateral faces and onto the contact edge, but does not open onto the upper face of the bar.

Abstract: A tread for a pneumatic tire in which air column resonance sound is reduced and wear of the groove fences and tread portion are caused to be approximately the same, while drainage performance is maintained, wherein a plurality of groove fences are formed and are installed within at least one circumferential groove, extending from the bottom of the circumferential groove, and block at least 70% of the cross-sectional area of the circumferential groove, and the bending parameter of the groove fences, defined as E·I/(h3l) (where E is the modulus at 10% elongation of the material used for the groove fences, I is the second moment of area of the groove fence, h is the height of the groove fence, and l is the width of the groove fence) is at least equal to 250 Pa and at most equal to 350 Pa.