摘要:
A tire comprising at least one carcass-type reinforcing structure formed of at least one layer of mutually parallel reinforcing elements making an angle, with the circumferential direction, of strictly less than 75° at least in the region of maximum axial width of the tire and of strictly less than 65° at least in the equatorial plane anchored on each side of the tire to a bead, each bead extending radially outwards in the form of a sidewall, the sidewalls radially towards the outside meeting a tread, and comprising, under the tread, a crown reinforcing structure consisting of at least one layer of reinforcing elements making angles of between 10° and 60° with the circumferential direction and known as a working layer, radially on the outside of the carcass-type reinforcing structure. In sidewalls, the tire comprises at least two axially adjacent carcass reinforcing layer portions, the reinforcing elements of the said carcass reinforcing layer portions being directed on each side of a meridian plane, at least in part of the sidewalls, and the reinforcing elements of at least one working layer crossing the reinforcing elements of the carcass-type reinforcing structure at an angle greater than 40°.
摘要:
A tire for a motorized two-wheeled vehicle comprising a reinforcing structure of the carcass type, made up of reinforcing elements, anchored on each side of the tire to a bead the base of which is intended to be mounted on a rim seat, each bead being extended radially outward by a sidewall, the sidewalls radially toward the outside joining to a tread. At least the central part of the tread comprises at least one circumferentially continuous cut, the cut being made up, for at least 80% of its length of at least one incision and at most 20% of at least one part having a width greater than that of an incision and the apparent area of the at least one incision is greater than the apparent area of the at least one part having a width greater than that of an incision.
摘要:
A motorized two-wheeled vehicle, comprising a radial carcass reinforcement formed of at least two layers of reinforcing elements, and comprising underneath the tread a crown reinforcement structure comprising of at least one layer of reinforcing elements. At least the tread surface comprises a first polymeric compound extending in at least the region of the equatorial plane and at least one second polymeric compound having physicochemical properties different from those of said first polymeric compound, the density of reinforcing elements in the radially inner carcass reinforcement layer being less than that in the radially outer carcass reinforcement layer.
摘要:
A tire comprising at least one carcass-type reinforcing structure and comprising a crown reinforcing structure having at least one working layer. At least one working layer is radially on the inside of at least one carcass layer, in the sidewalls, the tire comprises at least two carcass reinforcing layer portions extending over a radial distance at least equal to 50% of the radial distance between an end of a shoulder and the radially inner end of the radially innermost circumferential reinforcing element, at least in the equatorial plane, the reinforcing elements of the carcass reinforcement make an angle less than 80°, and the reinforcing elements of the working layer cross with the reinforcing elements of the carcass-type reinforcing structure by an angle greater than 40°, when the tire comprises at least two working layers radially on the inside of at least one carcass layer, the reinforcing elements of the at least two working layers being crossed by an angle of at most 5° and when the tire comprises at least one working layer radially on the outside of the carcass-type reinforcing structure, the reinforcing elements of the at least one working layer crossing with the reinforcing elements of at least one working layer radially on the inside of at least one carcass layer by an angle of at least 30°.
摘要:
A tire comprising at least one carcass-type reinforcing structure formed of at least one layer of mutually parallel reinforcing elements making an angle, with the circumferential direction, of strictly less than 75° at least in the region of maximum axial width of the tire and of strictly less than 65° at least in the equatorial plane anchored on each side of the tire to a bead, each bead extending radially outwards in the form of a sidewall, the sidewalls radially towards the outside meeting a tread, and comprising, under the tread, a crown reinforcing structure consisting of at least one layer of reinforcing elements making angles of between 10° and 60° with the circumferential direction and known as a working layer, radially on the outside of the carcass-type reinforcing structure. In sidewalls, the tire comprises at least two axially adjacent carcass reinforcing layer portions, the reinforcing elements of the said carcass reinforcing layer portions being directed on each side of a meridian plane, at least in part of the sidewalls, and the reinforcing elements of at least one working layer crossing the reinforcing elements of the carcass-type reinforcing structure at an angle greater than 40°.
摘要:
A process for the manufacture of a tire the beads of which are without anchoring bead wires and are reinforced by complexes of layers of reinforcement elements of low angle, around which complexes the radial carcass reinforcement is anchored by winding, said process being characterized in that each complex is produced independently of the carcass reinforcement blank, the manufacture of said complex including using at least one raw blank of reinforcement elements which are oriented at a higher angle than the angle to be obtained in the vulcanized state, subjecting said ply to pre-extension before formation of a two-layer sleeve, the pitch, angle and width characteristics of which are obtained by pantograph effect upon a second extension.
摘要:
A tire comprising at least one carcass-type reinforcing structure anchored on each side of the tire to a bead, each bead extending radially outwards in the form of a sidewall, the sidewalls radially towards the outside meeting a tread, and comprising, under the tread, a crown reinforcing structure consisting of at least one layer of reinforcing elements making angles of between 10° and 60° with the circumferential direction and known as a working layer, radially on the outside of the carcass-type reinforcing structure. In the sidewalls, the tire comprises at least two axially adjacent carcass reinforcing layer portions, the reinforcing elements of the said carcass reinforcing layer portions crossing those of a next layer by an angle of 5° at most, at least in the equatorial plane, the reinforcing elements of the carcass reinforcement making an angle of less than 80° with the circumferential direction and the reinforcing elements of at least one working layer crossing the reinforcing elements of the carcass-type reinforcing structure at an angle greater than 40°.
摘要:
The invention relates to a collapsible tyre for a vehicle, comprising at least one carcass reinforcement (5) surmounted radially from the outside by an inextensible crown reinforcement (4), itself radially on the inside of a tread (2), the said reinforcements (4, 5) each consisting of at least one layer of reinforcing elements, the said tread (2) being connected to two beads (6) by two sidewalls (8), the said beads (6) being intended to come into contact with a rim, each bead (6) comprising at least one circumferential reinforcing element (3) called a bead wire, the said bead wire (3) defining a mean line forming a substantially circular closed curve in a circumferential plane.The bead wire (3) of each bead (6) is flexible and comprises at least one concave part Pc of smaller radius Rc and of centre of curvature Cc.The invention also relates to a method of collapsing the tyre and to a use of the tyre.
摘要:
A method for simplifying the conventional pressure monitoring and/or adjustment method for a mounted assembly for a vehicle, in particular for a two-wheeled vehicle, and, more precisely, reducing the number of steps in the method, and a pressure monitoring and/or adjustment device for the use of this method. A mounted assembly (31) is composed of a tire (32), preferably tubeless, mounted on a rim (33) and inflated to an initial pressure, the tire comprising an inner surface forming the wall (34) of the tire cavity, in contact with the internal air, the wall of the tire cavity being at least partially covered with a self-sealing material (35). An inflation interface (36) is introduced into the tire cavity by piercing a hole in the wall of the tire cavity in an area covered by the self-sealing material, the inflation interface is extracted from the tire cavity after inflation, and the pierced hole in the wall of the tire cavity is sealed spontaneously by the self-sealing material, after the extraction of the inflation interface.