Abstract: A wheel rim 1 for a tire 2 including a rim portion 1A having a rim body 5 and a pair of flanges 6, the rim body 5 having seat portions 5a for seating bead portions 2c of the tire 2 at both ends of the rim body 5 in a rotation axis direction thereof, and the pair of flanges 6 being continuously provided on both sides of the rim body 5 and extending radially outward, wherein convex portions 9 which extend in a direction intersecting with a tire circumferential direction are provided at distances from one another in the circumferential direction on an outer surface 6o, which does not come into contact with the tire 2, of the flanges 6 in the rotation axis direction and/or on an inner surface of the rim body 5 in a radial direction.

Abstract: Disclosed is a vehicle equipped with air-filled tires, wherein heating of the air-filled tires during driving is minimized, and the durability of said tires is increased. Either many dimples are formed on the outside surface of at least one sidewall of the air-filled tires, or at least part of the outside surface of the sidewalls is formed using a good-thermal-conductivity rubber having a thermal conductivity of at least 0.40 W/(m·K). The vehicle is also provided with a cooling device that blows a gas that cools the air-filled tires from the outside.

Abstract: The first invention relates to a vehicle with pneumatic tires characterized in that the vehicle comprises a cooling unit which expels a fluid to cool the pneumatic tire from the outside thereof at least when the air pressure of the pneumatic tire decreases. And, the second invention relates to a tire cooling method in the vehicle with pneumatic tires comprising: a step of monitoring the air pressure of the pneumatic tire during running, and a step of expelling a fluid toward the pneumatic tire so as to cool the pneumatic tire from its outside when the air pressure falls below a predetermined value.

Abstract: A vehicle is fitted with a run-flat tire provided with: a carcass extending from a tread through a sidewall to a bead core of a bead assembly; and a side-reinforcement rubber layer that has a crescent-shaped cross-section and is disposed inside the carcass in the sidewall. A heat-conducting member having a coefficient of thermal conductivity of at least 0.3 W/(m·K) is disposed on the inner surface of the tire. The run-flat tire is further provided with a cooling device that cools the run-flat tire by blasting a fluid onto the fun-flat tire and/or the wheel rim.

Abstract: It is an object of the present invention to provide round fiber-reinforced plastic strand, a manufacturing method thereof, and a fiber-reinforced sheet which eliminate limitation in forming speed and limit on number of products capable of being manufactured at a time, do not require use of a release agent, eliminate the necessity of operations such as roughing after forming, and thus permit a considerable reduction of the manufacturing cost and a remarkable increase in the product quality.

Abstract: Disclosed is a run-flat tire having greatly increased run-flat endurance. The disclosed run-flat tire is provided with: a carcass (6) extending from a tread section (2) through a sidewall portion (3) to a bead core (5) of a bead portion (4); and a side-reinforcement rubber layer (9) that has a crescent-shaped cross-section and is disposed inside the carcass (6) in the sidewall portion (3). A heat-conducting rubber (11) having a coefficient of thermal conductivity of not less than 0.3 W/(m·K) is disposed on the inner cavity surface (12) of the tire. At least part of said heat-conducting rubber (11) is disposed in a side-reinforcement rubber layer projection area (T) where the side-reinforcement rubber layer (9) is projected onto the inner cavity surface (12) of the tire.

Abstract: Disclosed is a vehicle equipped with air-filled tires, wherein heating of the air-filled tires during driving is minimized, and the durability of said tires is increased. Either many dimples are formed on the outside surface of at least one sidewall of the air-filled tires, or at least part of the outside surface of the sidewalls is formed using a good-thermal-conductivity rubber having a thermal conductivity of at least 0.40 W/(m·K). The vehicle is also provided with a cooling device that blows a gas that cools the air-filled tires from the outside.

Abstract: A wheel rim configured to enhance the durability of the tire by reducing the temperature of the tire during running. A wheel rim 1 consisting of a metallic material and adapted so that a pneumatic tire 2 is mounted thereon, wherein a coating 5 having high heat emissivity is formed on at least a part of the surface of the wheel rim 1.

Abstract: A wheel rim 1 for a tire 2 including a rim portion 1A having a rim body 5 and a pair of flanges 6, the rim body 5 having seat portions 5a for seating bead portions 2c of the tire 2 at both ends of the rim body 5 in a rotation axis direction thereof, and the pair of flanges 6 being continuously provided on both sides of the rim body 5 and extending radially outward, wherein convex portions 9 which extend in a direction intersecting with a tire circumferential direction are provided at distances from one another in the circumferential direction on an outer surface 6o, which does not come into contact with the tire 2, of the flanges 6 in the rotation axis direction and/or on an inner surface of the rim body 5 in a radial direction.

Abstract: The first invention relates to a vehicle with pneumatic tires characterized in that the vehicle comprises a cooling unit which expels a fluid to cool the pneumatic tire from the outside thereof at least when the air pressure of the pneumatic tire decreases. And, the second invention relates to a tire cooling method in the vehicle with pneumatic tires comprising: a step of monitoring the air pressure of the pneumatic tire during running, and a step of expelling a fluid toward the pneumatic tire so as to cool the pneumatic tire from its outside when the air pressure falls below a predetermined value.

Abstract: A noise damper disposed in a tire cavity formed by a pneumatic tire and wheel rim is disclosed. A noise damper designed to use with a wheel rim comprises an annular body disposed around a damper-mounting portion of the wheel rim, and the annular body is made of a spongy material having an inside diameter of from 0.9 to 1.10 times an outside diameter of the damper-mounting portion. A noise damper designed to use with a pneumatic tire comprises an annular body disposed in a tire hollow, and the annular body is made of a spongy material having an outside diameter of from 1.00 to 1.10 times the maximum inside diameter of the tire hollow.

Abstract: A device for measuring angular velocity of a rotating tire, comprising a plurality (“m” pieces) of light reflection marks (3) disposed on an outer surface of a sidewall portion (2s) of a tire (2) so as to be located on a circumference line (j) of a single circle centered on a tire axis (i), a light sensor (5) fixed to a vehicle body (4) and capable of detecting passing of the light reflection marks (3) rotating with the tire (2), and a calculation means (7) for calculating the angular velocity Vr of the tire (2) by detecting passing of the light reflection marks (3) with the light sensor (5).

Abstract: It is an object of the present invention to provide round fiber-reinforced plastic strand, a manufacturing method thereof, and a fiber-reinforced sheet which eliminate limitation in forming speed and limit on number of products capable of being manufactured at a time, do not require use of a release agent, eliminate the necessity of operations such as roughing after forming, and thus permit a considerable reduction of the manufacturing cost and a remarkable increase in the product quality.

Abstract: A noise damper disposed in a tire cavity formed by a pneumatic tire and wheel rim is disclosed. A noise damper designed to use with a wheel rim comprises an annular body disposed around a damper-mounting portion of the wheel rim, and the annular body is made of a spongy material having an inside diameter of from 0.9 to 1.10 times an outside diameter of the damper-mounting portion. A noise damper designed to use with a pneumatic tire comprises an annular body disposed in a tire hollow, and the annular body is made of a spongy material having an outside diameter of from 1.00 to 1.10 times the maximum inside diameter of the tire hollow.

Abstract: A noise damper disposed in a tire cavity formed by a pneumatic tire and wheel rim is disclosed. A noise damper designed to use with a wheel rim comprises an annular body disposed around a damper-mounting portion of the wheel rim, and the annular body is made of a spongy material having an inside diameter of from 0.9 to 1.10 times an outside diameter of the damper-mounting portion. A noise damper designed to use with a pneumatic tire comprises an annular body disposed in a tire hollow, and the annular body is made of a spongy material having an outside diameter of from 1.00 to 1.10 times the maximum inside diameter of the tire hollow.

Abstract: A winter tire containing a central vertical groove which extends along a tire equator C, and rib portions 6a and 6b having sipes S are formed on the opposite sides of the central vertical groove. At a groove edge line 3E of the central vertical groove, reference pitches P each comprises a main portion extending from an outermost origin N1 in a tire axial direction to a terminal end N2 closest to the tire equator, and an auxiliary portion 3b having a length in the tire circumferential direction smaller than that of the main portion 3a and passes through said origin N1 from said terminal end N2, and the reference pitches P are repeated in the tire circumferential direction into a zigzag configuration. A tire circumferential direction length of the main portion is 60% or more of a tire circumferential direction length of the reference pitch P.

Abstract: A noise damper disposed in a tire cavity formed by a pneumatic tire and wheel rim is disclosed. A noise damper designed to use with a wheel rim comprises an annular body disposed around a damper-mounting portion of the wheel rim, and the annular body is made of a spongy material having an inside diameter of from 0.9 to 1.10 times an outside diameter of the damper-mounting portion. A noise damper designed to use with a pneumatic tire comprises an annular body disposed in a tire hollow, and the annular body is made of a spongy material having an outside diameter of from 1.00 to 1.10 times the maximum inside diameter of the tire hollow.

Abstract: A central vertical groove 3 extends on a tire equator C, and rib portions 6a and 6b having sipes S are formed on the opposite sides of the central vertical groove 3. In a groove edge line 3E of said central vertical groove 3, reference pitches P each comprises a main portion 3a extending from an outermost origin N1 in a tire axial direction to a terminal end N2 closest to the tire equator, and an auxiliary portion 3b having a length in the tire circumferential direction smaller than that of the main portion 3a and passing through said origin N1 from said terminal end N2, and the reference pitches P are repeated in the tire circumferential direction into a zigzag shape. A tire circumferential direction length of the main portion 3a is 60% or more of a tire circumferential direction length of the reference pitch P.

Abstract: A studless tire comprises a tread defining a ground-contacting region, the tread comprising at least a diene rubber and non-metallic short fibers oriented in the tire radial direction. The tire profile satisfies the following equation 1>TW/S>0.92−0.17×A wherein TW is the ground-contacting width of the tire; S is the section width of the tire; and A is the tire aspect ratio. In the ground-contacting region, at least one circumferential rib of which total axial width is 15 to 30% of the ground-contacting width TW may be disposed. The ground-contacting face of the tread may be provided on at least 80% of its area with unevenness molded by a tire vulcanizing mold so as to have a ten-point mean roughness of from 30 to 500 micrometers.