Abstract: A tire for a rolling assembly comprises a rim and a tire, said tire having at least one carcass reinforcement (2) surmounted radially on the outside by a crown reinforcement (3), itself radially on the inside of a tread (4) having two axially outermost ends, said crown reinforcement (3) being made up of at least one layer of reinforcing elements, said tread (4) being connected to two beads (5) by way of two sidewalls (6), said beads (5) being intended to come into contact with a rim (7) having rim flange tops (7a), each bead (5) having at least one circumferential reinforcing element.

Abstract: Vehicle rim for the mounting of a tire, comprising: an axially central part (20) comprising a disc; two lateral parts (31, 32), at least one of the lateral parts being separate from the axially central part, each of the lateral parts having a rim seat receiving a bead of a tire, the axially central part and the two lateral parts being made from a rigid matrix reinforced by a plurality of reinforcement elements; an intermediate part (41, 42) linking the axially central part and each lateral part separate therefrom, this intermediate part being made of a flexible matrix reinforced by a reinforcement, wherein 1 MPa?the Young's modulus of uniaxial extension of the flexible matrix?100 MPa, the Young's modulus of uniaxial extension of the reinforcement elements is?5 GPa; wherein the Young's modulus of uniaxial extension of the rigid matrix is?5 GPa.

Abstract: A running set comprising: a tire (10) comprising two beads (20); a mounting rim (500) of which the width is greater than or equal to 55% and less than or equal to 80% of the maximum axial width of the tire inflated to its service pressure; and at least one adapter (100) which provides the connection between the mounting rim and a bead of the tire.

Abstract: A tire (1) includes sidewalls (2), a crown region (3) provided with a tread (4), a reinforcing structure (5) extending between the sidewalls and passing via the crown region, at least a portion of one of the sidewalls and/or of the crown comprising an insert (6) comprising a first elastomer composition serving as a matrix, within which a second elastomer composition derived from recycled tires is distributed substantially uniformly, the modulus of the first composition being at least 10% greater than the modulus of the second composition, and the proportion of second composition being greater than or equal to 40%.

Abstract: Rolling assembly comprising tire P, rim J, adapter connecting a bead and the rim. The adapter has axially outer (9) and inner (10) ends mounted on rim seat (7) having respective outer (16) and inner (20) reinforcers. Body (11) connects the outer (9) and inner (10) ends forming a single piece, an adapter seat (18) receives a bead and is situated at end (9), an adapter bearing face (21) in a plane perpendicular to the rotation axis, and situated on the axially inner face of outer end (9). Reinforcer (20) of end (9) is axially outside bearing face (21). The body comprises, opposite adapter seat (14), annular seat reinforcer (19) and the adapter comprises conductive strip (22) positioned over all or part of the circumferential perimeter of said adapter and along a complete path extending from adapter seat (14) to rim flange (8).

Abstract: A tire has a form of a torus that is open radially on an inside portion. The tire includes inner and outer walls, a crown, two sidewalls, two beads, a crown reinforcement, and a carcass reinforcement anchored in the beads and extending at least from the beads as far as the crown. The inner wall is covered at least in part with an airtight layer, and the airtight layer is covered at least in part with a layer of a self-sealing product. Each of the beads includes an annular reinforcing structure, with each annular reinforcing structure being formed of a plurality of windings of a single metal thread. The windings are arranged in a plurality of radially superposed layers, with each layer having a group of the windings arranged axially in a side by side manner, such that the superposed layers have a hexagonal cross section.

Abstract: Vehicle rim for mounting of a tire, comprising: an axially central part (20) comprising a disc; two lateral parts (31, 32), at least one of the lateral parts being separate from the axially central part, each of the lateral parts having a rim seat to receive a bead of a tire, the axially central part and the two lateral parts being made from a rigid matrix; an intermediate part (41, 42) that forms the only mechanical link between the axially central part and each lateral part that is separate from the axially central part, this intermediate part being made of a flexible matrix, the Young's modulus of uniaxial extension of the flexible matrix being greater than and equal to 50 MPa and less than or equal to 400 MPa; wherein the Young's modulus of uniaxial extension of the rigid matrix is greater than or equal to 5 GPa.

Abstract: Tyre (1) comprising sidewalls (2), a crown region (3) provided with a tread (4), a reinforcing structure (5) extending between the sidewalls (2) and passing via the crown region (3), at least one portion of the region of the tyre that is axially inside the reinforcing structure (5) comprising an insert (6) comprising a first elastomer composition serving as a matrix, within which a second elastomer composition originating from recycled tyres is distributed substantially uniformly, the proportion of said second elastomer composition being greater than or equal to 40%.

Abstract: A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave (1) containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle (20).

Abstract: Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a solid unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler; between 0.5 and 15 phr of thiuram polysulphide, in which, during a first stage or stage (a), a masterbatch comprising at least the solid unsaturated diene elastomer and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.

Abstract: Rolling assembly comprising tire P, rim J, adapter connecting a bead and the rim. The adapter has axially outer (9) and inner (10) ends mounted on rim seat (7) having respective outer (16) and inner (20) reinforcers. Body (11) connects the outer (9) and inner (10) ends forming a single piece, an adapter seat (18) receives a bead and is situated at end (9), an adapter bearing face (21) in a plane perpendicular to the rotation axis, and situated on the axially inner face of outer end (9). Reinforcer (20) of end (9) is axially outside bearing face (21). The body comprises, opposite adapter seat (14), annular seat reinforcer (19) and the adapter comprises conductive strip (22) positioned over all or part of the circumferential perimeter of said adapter and along a complete path extending from adapter seat (14) to rim flange (8).

Abstract: Tire with sidewalls (6) having, on their outer surfaces, a set of protuberances (8) that alternate with voids (9). The tread (4) comprises a circumferential groove (10) at at least one axially outermost end (4a). Each protuberance (8) is disposed at the surface of a sidewall, the different protuberances being disposed regularly or irregularly and continuously or discontinuously between a point A and a point E. The inner wall (2a) of the carcass ply (2) of the tire is partially or entirely covered with at least one layer of a self-sealing composition (2b).

Abstract: The tire (10B) comprises a tread (12) including a running layer (14) which is intended to come into contact with the ground when the tire (10B) rolls on the ground, and a sublayer (16) located radially inwards from the running layer (14). The tread (12) comprises at least one fluid passage (22) between the sublayer (16) and the air surrounding the tire (10B). The sublayer (16) comprises a cellular material. The fluid passage (22) comprises an element chosen from a groove (20) and a cut (26), formed in the running layer (14) and extended by at least one well (28) acting as a radial extension of the element, formed between the groove (20) and/or the cut (26) and the sublayer (16). Each well (28) forms a localized part of the fluid passage (22).

Abstract: Adapter for a rolling assembly comprising a tire, and a rim having two rim seats and two rim flanges. The adapter has an axially inner end mounted on the rim seat and comprises an inner reinforcing element, an axially outer end that comprises an outer reinforcing element, a body that connects the two ends to form a single piece. A substantially cylindrical adapter seat is configured to receive a bead, and is situated at the axially outer end of the body. An adapter bearing face is substantially contained in a plane perpendicular to the rotation axis, and situated on the axially inner face of the axially outer end. The reinforcing element of the axially outer end is entirely situated axially outside the bearing face. The body comprises, opposite the adapter seat, an annular seat reinforcer. The inner wall of the tire is covered by a layer of a self-sealing composition.

Abstract: A method for testing a punctured tyre's resistance to a loss in pressure includes: creating a plurality of punctures in a wall of the tyre by inserting a plurality of puncturing objects through the wall; running the tyre with the puncturing objects in the wall thereof over a given distance with a regulated inflation pressure; stopping the running of the tyre; and determining, for each puncture, a pressure loss resistance index based on an estimate of a leak rate of the puncture.

Abstract: Elastomer composition having a self-sealing property which can be used in particular as puncture-resistant layer in an inflatable article, based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as “elastomer A”, and a natural rubber or synthetic polyisoprene elastomer, referred to as “elastomer B”, the elastomer A: elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler. Inflatable article, such as a tire, provided with a puncture-resistant layer comprising this elastomer composition; the puncture-resistant layer is advantageously used in combination with an airtight layer, for example based on butyl rubber or TPS elastomer, in order to form, in the inflatable article, an airtight and puncture-resistant laminate.

Abstract: A tire carcass comprises two sidewalls (2) and a crown region (3) suitable for receiving, radially externally, a tread (4), the internal surface of the sidewalls and of the crown forming an internal wall (10), and also comprises a circumferential tread support surface (6) provided with a layer of thermoplastic elastomer (TPE).

Abstract: Self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with a puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.

Abstract: A process for molding a tire elastomeric thermoplastic composite comprises a stage in which a layer of thermoplastic elastomer (TPE) is applied against one of the faces of the composite, followed by a molding stage for vulcanization of the composite and crosslinking of the layer of thermoplastic elastomer (TPE) with the neighboring layer of rubber material. The process furthermore comprises a stage consisting in applying a nonstick protective layer (12) against the thermoplastic elastomer (TPE) face intended to be in contact with the mold.

Abstract: A tire tread (4), comprising an inner face and an outer face, comprises a supporting surface (8) covered with a layer of thermoplastic elastomer (TPE).