Patent classifications
B60C13/00
Rubber Member, Tire, and Method of Manufacturing Rubber Member
A vehicle tire, as a rubber member, includes, on at least a part of the surface thereof, a fine ridged/grooved structure formed via transfer from a mold and having fine ridged/grooved portions arranged at a constant arrangement pitch, wherein a region in which the fine ridged/grooved structure is provided is visually recognizable by a different structural color from the colors of other regions.
Rubber Member, Tire, and Method of Manufacturing Rubber Member
A vehicle tire, as a rubber member, includes, on at least a part of the surface thereof, a fine ridged/grooved structure formed via transfer from a mold and having fine ridged/grooved portions arranged at a constant arrangement pitch, wherein a region in which the fine ridged/grooved structure is provided is visually recognizable by a different structural color from the colors of other regions.
PNEUMATIC TIRE WITH ANNULAR SIDEWALL CONCAVITY
A pneumatic tire has a non-stretchable tread (30) flanked by two shoulder regions (34), and two non-stretchable bead regions (36) for mounting the tire to a wheel, each bead region being connected via a sidewall to the corresponding bead region. Each sidewall has a first portion (38) extending inwardly relative to a width of the tire from one of the bead regions (36) to a deflection region (40), and a second portion (42) extending outwardly relative to the width of the tire from the deflection region (40) to a corresponding one of the shoulder regions (34). A non-stretchable girth-limiting configuration (44, 46, 56) and a radial reinforcing structure (48, 50, 52) are associated with the first portion (38) of each of the sidewalls, thereby limiting radial flexing of first portion (38) and maintaining an annular concavity between the bead region (36) and the shoulder region (34).
Pneumatic tire
A pneumatic tire has a pair of sidewall portion 3. An outer surface of at least one of the pair of sidewall portions 3 includes a decorative region 5 extending in a tire circumferential direction. In the decorative region 5, a plurality of pattern elements 8 are arranged, whereby the decorative region 5 includes a plurality of circumferential pattern lines 6 in each of which the pattern elements 8 are aligned in the tire circumferential direction, and a plurality of radial pattern lines 7 in each of which the pattern elements 8 are aligned in a tire radial direction. In each circumferential pattern line 6, lengths in the tire circumferential direction of the pattern elements 8 are changed in the tire circumferential direction. In each radial pattern line 7, lengths in the tire radial direction of the pattern elements 8 are changed in the tire radial direction.
Pneumatic tire
A pneumatic tire exerts an excellent blurring effect on irregularities resulting from a boundary between members in a sidewall portion. A pneumatic tire includes a serration portion formed by providing multiple basic ridges side by side at intervals in a tire circumferential direction on a surface of a sidewall portion, and multiple sub-ridges extending in a direction crossing the basic ridges and shorter than the basic ridges, which are provided without coupling the basic ridges neighboring each other.
PNEUMATIC TIRE
Provided is a pneumatic tire that has reduced rolling resistance during high-speed running as well as excellent durability performance. This pneumatic tire comprises a sidewall and a clinch section in each of a pair of side sections. When the loss tangent of the sidewall is tan δsw and the loss tangent of the clinch section is tan δc when measured under the conditions of 70° C., a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1%, then (tan δsw+tan δc)≤0.3 and |tan δsw−tan δc|≤0.07. When the cross-sectional width of the tire is Wt (mm) and the external diameter is Dt (mm) when the pneumatic tire is installed on a standardized rim and internal pressure is set to 250 kPa, and if the volume of space occupied by the tire is a virtual volume V (mm.sup.3), then (formula 1) and (formula 2) are satisfied.
1700≤(Dt.sup.2×π/4)/Wt≤2827.4 (formula 1)
[(V+1.5×10.sup.7)/Wt]≤2.88×10.sup.5 (formula 2).
PNEUMATIC TIRE
Provided is a pneumatic tire that has reduced rolling resistance during high-speed running as well as excellent durability performance. This pneumatic tire comprises a sidewall and a clinch section in each of a pair of side sections. When the loss tangent of the sidewall is tan δsw and the loss tangent of the clinch section is tan δc when measured under the conditions of 70° C., a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1%, then (tan δsw+tan δc)≤0.3 and |tan δsw−tan δc|≤0.07. When the cross-sectional width of the tire is Wt (mm) and the external diameter is Dt (mm) when the pneumatic tire is installed on a standardized rim and internal pressure is set to 250 kPa, and if the volume of space occupied by the tire is a virtual volume V (mm.sup.3), then (formula 1) and (formula 2) are satisfied.
1700≤(Dt.sup.2×π/4)/Wt≤2827.4 (formula 1)
[(V+1.5×10.sup.7)/Wt]≤2.88×10.sup.5 (formula 2).
TIRE
In this tire, a distance GT from a tread profile at a tire ground contact edge to a tire inner surface, a distance GC from the tread profile at a position of 70% of a tire cross-sectional height to the tire inner surface, and a distance GD from the tread profile at a tire maximum width position to the tire inner surface satisfy conditions 1.00≤GC/GD≤1.10 and 3.00≤GT/GC≤4.00.
TIRE
In this tire, a distance GT from a tread profile at a tire ground contact edge to a tire inner surface, a distance GC from the tread profile at a position of 70% of a tire cross-sectional height to the tire inner surface, and a distance GD from the tread profile at a tire maximum width position to the tire inner surface satisfy conditions 1.00≤GC/GD≤1.10 and 3.00≤GT/GC≤4.00.
PNEUMATIC TIRE
A pneumatic tire having a side portion and a clinch portion, wherein: in a meridian cross section, the distance from a bead baseline to the outside portion in the width direction of the clinch portion is greater than the distance to the inside portion in the width direction; the E*.sub.S of the side portion, as measured at 70° C., a frequency of 10 Hz, an initial distortion of 5%, and a distortion rate of 1%, is less than the E*.sub.C of the clinch portion; and, formulas (1) and (2) are satisfied:
1600≤(Dt.sup.2×π/4)/Wt≤2827.4 (1)
[(V+1.5×10.sup.7)/Wt]≤2.88×10.sup.5 (2)
where Wt is the cross-sectional width of the tire installed on a standardized rim and filled with air to an internal pressure of 250 kPa, Dt is the outer diameter, and V is the volume of the tire.