Patent application number | Description | Published |
20100032070 | Tire with a Self-Sealing Ply - Tire comprising at least two sidewalls, a crown provided radially externally with a tread, a carcass-type reinforcing structure and a crown reinforcement, the inner surface of the sidewalls and of the crown forming an inner wall of the tire, at least one portion of said wall being covered with a self-sealing layer comprising a thermoplastic stirene (TPS) elastomer and the tire being able to be inflated to a given service inflation pressure P | 02-11-2010 |
20100051158 | Self-Sealing Composition for a Pneumatic Object - A self-sealing elastomer composition, in an inflatable article such as a pneumatic tire ( | 03-04-2010 |
20100059159 | Tire with Improved Endurance to External Impacts - A tire designed to be mounted and pressurized on a vehicle wheel rim that has at least one circumferential seat for a bead belonging to the tire and an outward radial projection in the vicinity of the seat. A circumferential crown is provided with a tread for ensuring contact with the ground. At least one bead has a portion suitable for being mounted on the rim seat. A wall comprising a structure of rubber and reinforcements connects the crown to the bead. The whole formed by these elements defines with the rim an air chamber. At least one protective element is located in a sector where the tire wall between the crown and the bead could become pinched between the projection and an obstacle external to the tire in response to a violent impact due to the tread meeting this obstacle, causing closure of the internal cavity of the tire in this sector and momentary high compressive stresses perpendicular to the wall of the tire. The protective element is capable of deforming elastically in the direction perpendicular to the tire wall. The protective element is produced using a foam of a rubber-based material with a rigidity greater than 10 MPa (and preferably greater than 25 MPa) and a void ratio of between 15% and 60% (and preferably of between 25% and 40%). | 03-11-2010 |
20100200133 | TIRE COMPRISING A TREAD WITH RUBBERY FOAM - Tire comprising at least one carcass-type reinforcing structure anchored on each side of said tire in a bead whose base is intended to be mounted on a rim seat, each of said beads extending generally radially outwardly in the form of sidewalls, the sidewalls being connected radially towards the outside to a tread, the carcass-type reinforcing structure extending circumferentially from the bead towards said sidewall, a crown reinforcing structure, each of the beads also comprising an anchoring region for holding the reinforcing structure in place, wherein said tread comprises an inner layer of substantially incompressible rubbery material and an outer layer of compressible rubbery foam wherein:
| 08-12-2010 |
20100230021 | TIRE COMPRISING A HIGH GRIP TREAD - Tire comprising at least one carcass-type reinforcing structure anchored on each side of said tire in a bead whose base is intended to be mounted on a rim seat, each of said beads extending generally radially outwardly in the form of sidewalls, the sidewalls being connected radially towards the outside to a tread, the carcass-type reinforcing structure extending radially from the bead towards said sidewall, a crown reinforcing structure, each of the beads also comprising an anchoring region for holding the reinforcing structure in place, wherein said tread comprises an inner layer of substantially incompressible rubbery material and an outer layer of rubbery foam wherein:
| 09-16-2010 |
20100294411 | Multilayered Gas-Tight and Anti-Puncture Laminate Object Including Same - A puncture-resistant multilayer laminate that is impermeable to inflation gases, comprising: a gastight first elastomer layer comprising a polystirene/polyisobutylene block copolymer thermoplastic elastomer, and optionally an extender oil with a content within a range of 0 to less than 100 phr; and a self-sealing second elastomer layer comprising a thermoplastic stirene elastomer, identical to or different from the first elastomer, and an extender oil with a content greater than 200 phr. | 11-25-2010 |
20110198009 | Pneumatic Article Provided with a Self-Sealing Composition - Inflatable article such as a pneumatic tire provided with a puncture-resistant layer comprising, by way of a self-sealing composition, an elastomer composition comprising at least, as predominant elastomer, a thermoplastic stirene (TPS) elastomer, more than 200 phr of an extender oil and more than 20 phr of a hydrocarbon resin, the glass transition temperature of which is greater than 0° C. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the pneumatic article, an airtight puncture-resistant laminate. | 08-18-2011 |
20120118463 | Pneumatic Object Provided with a Self-Sealing and Gas-Tight Layer Comprising a Thermoplastic Elastomer and Extension Oil - An inflatable article provided with an elastomer layer comprising at least, as major elastomer, a thermoplastic polystirene/polyisobutylene block copolymer, such as a stirene/isobutylene/stirene (SIBS) copolymer, and at least 100 phr of an extender oil. Preferably, this copolymer comprises between 5% and 50% stirene by weight, its number-average molecular weight is between 30,000 and 500,000 g/mol and its Tg is below −20° C. The extender oil is preferably a polybutene oil such as polyisobutylene (PIB) oil. This elastomer layer is able to fulfil not only the role of a self-sealing (puncture-resistant) layer, but also that of an impermeable layer, furthermore with a reduced hysteresis compared to a conventional layer based on butyl rubber. The inflatable article can be, in particular, an inner tube or a pneumatic tire for a motor vehicle. | 05-17-2012 |
20120199260 | TIRE HAVING A BUILT-IN SELF-SEALING LAYER - A pneumatic tyre with a built-in self-sealing layer includes an outer rubbery tread, a carcass reinforcement, a gastight layer located at an inside position relative to the carcass reinforcement, a separable protective layer positioned innermost, and a self-sealing layer adjacent to the separable protective layer and located at an inside position relative to the gastight layer. The separable protective layer is a thermoplastic film that includes at least one fluoropolymer. | 08-09-2012 |
20120273109 | TYRE HAVING A BUILT-IN SELF-SEALING LAYER - Tyre with inbuilt self-sealing layer comprising an external rubber tread, a carcass reinforcer, a gastight layer arranged on the inside relative to the carcass reinforcer, an anti-tack layer arranged furthest towards the inside and a self-sealing layer adjacent to the anti-tack layer and arranged on the inside relative to the gastight layer, characterized in that the said anti-tack layer is comprised of particles with a shape factor (F=L/E) higher than 5, L representing the length or longest dimension and E the shortest dimension normal to the length. | 11-01-2012 |