Abstract: The curing bladder for a tire has a shape of revolution around a central axis and comprises a flexible wall made of crosslinked rubber. The surface of the wall is covered with a coating film made of a non-stick composition. When the bladder is non-inflated, the coating film has a variable thickness over the surface.

Abstract: The curing bladder for a tire has a shape of revolution around a central axis and comprises a flexible wall made of crosslinked rubber. The surface of the wall is covered with a coating film made of a non-stick composition. When the bladder is non-inflated, the coating film has a variable thickness over the surface.

Abstract: The building drum includes a support (20), a central shaft (30) and an outer circumferential surface coaxial with the axis of rotation of the drum. The building drum also has a principal cylindrical surface (100) axially bounded by a shoulder (101) extended by a lateral protuberance (102) for receiving the products which have to be assembled. Several segments together define the principal cylindrical surface, and those segments are being divided into first and second groups of adjacent segments (103a, 103b) mounted so as to move between a first position in which they are circumferentially juxtaposed and a second position in which the adjacent segments are radially offset. Several adjacent elbow levers (140) form the shoulder (101) and the protuberance (102) in the expanded position of the drum and each elbow lever (140) is mounted with articulation on the segment (103a, 103b) and on the support (20).

Abstract: A device for rotating a tire includes a fixed support, a driving belt, a plurality of first pulleys, and at least one second pulley. The driving belt has a contact face for contacting an annular part of the tire, and the driving belt enables rotation of the tire. The first pulleys are mounted on the support and are in abutment with the driving belt on a side opposite to the contact face in order to press the contact face radially against the annular part of the tire. The at least one second pulley is in abutment with the contact face of the driving belt and is mounted for translational movement on the support in order to locally space the contact face apart from the annular part of the tire.

Abstract: A method of manufacturing a tire includes steps of: providing a shoulder drum that includes shoulders having a height of at least equal to 25 mm; placing a carcass ply of a green tire on the shoulder drum; providing a winding of circumferential bead reinforcers around each end of the carcass ply, each winding having a number of turns providing a winding of circumferential bead reinforcers against each shoulder of the shoulder drum, each winding being in a spiral; and forming the green tire such that each end of the carcass ply does not have a turnup around the circumferential bead reinforcers, and the circumferential bead reinforcers are positioned in the green tire in a defined layout.

Abstract: A tire for a handling vehicle, designed to transport heavy loads, over short distances and at low speeds, and a mounted assembly consisting of a tire mounted on a rim. Also, a method for producing such a mounted assembly. A mounted assembly includes a tire mounted on a rim, having a tread designed to come into contact with a ground, two sidewalls extending radially inwards from the ends of the tread, and two beads extending the sidewalls radially inwards and in contact with the rim, an internal cavity containing a filling component consisting of at least one incompressible solid element, and which is a granular filling component consisting of granules at least partly separated from one another by interstices containing at least gas, and the fill rate, which is the ratio between the total volume of the granules, the total of the elementary volumes of the granules, and the volume of the internal cavity, is at least equal to 0.8.

Abstract: The building drum includes a support (20), a central shaft (30) and an outer circumferential surface coaxial with the axis of rotation of the drum. The building drum also has a principal cylindrical surface (100) axially bounded by a shoulder (101) extended by a lateral protuberance (102) for receiving the products which have to be assembled. Several segments together define the principal cylindrical surface, and those segments are being divided into first and second groups of adjacent segments (103a, 103b) mounted so as to move between a first position in which they are circumferentially juxtaposed and a second position in which the adjacent segments are radially offset. Several adjacent elbow levers (140) form the shoulder (101) and the protuberance (102) in the expanded position of the drum and each elbow lever (140) is mounted with articulation on the segment (103a, 103b) and on the support (20).

Abstract: A self-sealing elastomer composition that includes a diene elastomer, a hydrocarbon resin with a given softening temperature, and a liquid plasticizing agent, is manufactured according to a process that includes successive stages. In one stage, the hydrocarbon resin is incorporated in the diene elastomer by kneading the resin and the elastomer in a mixer at or up to a temperature referred to as “hot compounding” temperature, which is greater than the softening temperature of the resin, in order to obtain a masterbatch. In another stage, the liquid plasticizing agent is incorporated in the masterbatch by kneading the agent and the masterbatch in the same mixer or in another mixer, in order to obtain the self-sealing composition. The self-sealing composition then is formed dimensionally.

Abstract: The device for rotating a tire comprises a fixed support, a driving belt 16 that is provided with a contact face for making contact with an annular part of the tire and is able to allow said tire to be rotated, a plurality of first pulleys 18 that are mounted on the support and are in abutment with the driving belt on the side opposite to from the contact face in order to press said contact face radially against the annular part of the tire, and at least one second pulley 20 that is in abutment with the contact face of the driving belt and is mounted so as to be able to move in translation on the support in order to locally space said contact face apart from the annular part of the tire.

Abstract: A for inspecting the internal surface located between a first and a second bead of a tire (P), comprising means for acquiring the image of the internal surface (1) of the tire, and centering means that are able to lock the first bead around its entire circumference on a reference plate, and to set the tire into relative rotation about its axis XX? with respect to said image acquisition means. This device comprises means for opening and for holding the second bead, said means comprising two internal holding rollers (32, 32) which have a generally radial axis, and at least one external holding roller (33) which has a generally radial axis, is disposed substantially in the middle of the angular sector formed by the two internal holding rollers (31, 32) and is able to come into abutment against the external part of said second bead, the internal (31, 32) and external (33) holding rollers being mounted so as to rotate as one about the axis XX? of said image acquisition means (1).

Abstract: Process for the manufacture of a self-sealing elastomer composition comprising at least one diene elastomer, one hydrocarbon resin with a given softening temperature and one liquid plasticizing agent, characterized in that it comprises the following successive stages: (a) incorporating the hydrocarbon resin in the diene elastomer by kneading these components in a mixer at a temperature or up to a temperature referred to as “hot compounding” temperature greater than the softening temperature of the hydrocarbon resin, in order to obtain a masterbatch; (b) incorporating the liquid plasticizing agent in the masterbatch by kneading the combined mixture in the same mixer or in a different mixer, in order to obtain the self-sealing composition; and (c) forming the said self-sealing composition dimensionally.

Abstract: A tire for a handling vehicle, designed to transport heavy loads, over short distances and at low speeds, and a mounted assembly consisting of a tire mounted on a rim. Also, a method for producing such a mounted assembly. A mounted assembly includes a tire mounted on a rim, having a tread designed to come into contact with a ground, two sidewalls extending radially inwards from the ends of the tread, and two beads extending the sidewalls radially inwards and in contact with the rim, an internal cavity containing a filling component consisting of at least one incompressible solid element, and which is a granular filling component consisting of granules at least partly separated from one another by interstices containing at least gas, and the fill rate, which is the ratio between the total volume of the granules, the total of the elementary volumes of the granules, and the volume of the internal cavity, is at least equal to 0.8.

Abstract: A for inspecting the internal surface located between a first and a second bead of a tire (P), comprising means for acquiring the image of the internal surface (1) of the tire, and centering means that are able to lock the first bead around its entire circumference on a reference plate, and to set the tire into relative rotation about its axis XX? with respect to said image acquisition means. This device comprises means for opening and for holding the second bead, said means comprising two internal holding rollers (32, 32) which have a generally radial axis, and at least one external holding roller (33) which has a generally radial axis, is disposed substantially in the middle of the angular sector formed by the two internal holding rollers (31, 32) and is able to come into abutment against the external part of said second bead, the internal (31, 32) and external (33) holding rollers being mounted so as to rotate as one about the axis XX? of said image acquisition means (1).

Abstract: Expansion process for at least one blank of a toroid ring (2) formed of an elastomeric material, comprising a stage of partial cross-linking, the said toroid ring being designed, when fully cross-linked and expanded, to constitute at least in part a safety support with a closed-cell alveolar structure, the said support being designed to be fitted on a wheel rim inside a tire, in which on completion of the partial cross-linking phase the toroid ring (2) is placed in an oven (1) to undergo an expansion phase therein, characterised in that during the expansion phase the toroid ring (2) is rotated in a vertical plane by a horizontal rotating spindle (3) which supports the said toroid ring along its inner circumference.

Abstract: An assembly (1) formed of a wheel comprising a rim (3) equipped with an inflation valve (4), a tire (2) mounted on said rim (3) of said wheel, and a foam insert (5) placed inside the volume defined by the internal wall of the tire (2) and the wheel rim (3). The foam insert (5) is disposed in a first compartment (A) in communication with the atmosphere via a duct (36) and isolated in airtight manner by a flexible membrane (51) from the rest of the space (B) inside the tire casing, which space forms a second compartment (B) in communication with the inflation valve (4, 41) and designed to be inflated to the utilisation pressure of the tire.