Sumitomo Rubber Industries Patente

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A pneumatic tire (1) includes a reinforcing filler (10) arranged along a bead core (5). The reinforcing filler (10) includes an inner portion (11) extending in the tire radial direction, outer portion (12) extending in the tire radial direction, and a middle portion (13) extending in the tire axial direction on the radially inner side of the bead core (5) so as to connect the inner portion (11) and the outer portion (12). The outer portion (12) has an outer end (12e) in the tire radial direction located radially inside an outer end (11e) in the tire radial direction of the inner portion (11) and located radially outside a center position (5c) of a section height (Ha) of the bead core (5) in the tire radial direction.

A heavy duty tire comprising a tread part, wherein the tread part comprises a plurality of circumferential grooves extending continuously in a tire circumferential direction, wherein the tread part at least comprises three rubber layers, wherein a tan δ at 70°C of the rubber composition constituting the first layer is smaller than a tan δ at 70°C of the rubber composition constituting the second layer, and wherein, when a tire outer diameter is defined as Dt, in m, a thickness of the first layer is defined as t1, in mm, and a groove depth at a deepest part of the circumferential grooves is defined as H, in mm, 70°C tan δ2/Dt is greater than 0.09, and t1/H is 0.90 or less.

Provided is a tire with excellent chip and cut resistance. Included is a tire including a tread, the tread containing at least one rubber component including at least one isoprene-based rubber, and at least one filler including at least one carbon black, the tire satisfying the following relationships: (1) Isoprene-based rubber content > 65% by mass; (2) 1.0% by mass ≤ Total styrene content ≤ 8.0% by mass; and (3) Filler content > Total styrene content, wherein Isoprene-based rubber content and Total styrene content represent an amount (% by mass) of the isoprene-based rubber and a total styrene content (% by mass), respectively, based on 100% by mass of the rubber component, and Filler content represents an amount (parts by mass) of the filler per 100 parts by mass of the rubber component.

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The present invention relates to a heavy duty tire including a tread portion 2 which includes a pair of crown circumferential grooves 3 and a crown region 4. The crown region 4 includes a plurality of crown land portions 5 demarcated by a circumferential sipe 8. At least one of the crown land portions 5 is a first crown land portion 5A on which a plurality of lateral sipes 10 fully crossing a tread surface of the crown land portion 5 in a tire axial direction are provided. The lateral sipes 10 include first lateral sipes 11 and second lateral sipes 12. Each first lateral sipe 11 has a constant depth over an entire range in a sipe length direction thereof. Each second lateral sipe 12 includes a shallow bottom portion 15 located in a center portion in a sipe length direction thereof, where a depth thereof is partially reduced.

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A tire 1 includes a tread portion 2 which includes a circumferential groove 3 extending in a tire circumferential direction and a land portion 4 adjacent to the circumferential groove 3. The circumferential groove 3 includes a first groove wall defining a side wall surface of the land portion 4. The land portion 4 includes a ground-contact surface connected to the first groove wall. A longitudinal hole and two or more lateral holes are provided in the land portion 4. The longitudinal hole has a longitudinal hole opening having a closed contour on the ground-contact surface and extends inward in a tire radial direction from the longitudinal hole opening. Each lateral hole has a lateral hole opening having a closed contour on a surface of the first groove wall and extends in a tire axial direction from the lateral hole opening so as to communicate with the longitudinal hole.

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Provided is a tire having excellent abrasion resistance. The tire includes a tread, the tread including a rubber composition that contains a rubber component including a styrene-butadiene rubber, a silica, a carbon black, a resin, and an ester plasticizer, the rubber composition containing the silica in an amount of 90 parts by mass or more and the carbon black in an amount of 15 parts by mass or more per 100 parts by mass of the rubber component, the rubber composition satisfying the following formula (1), the tire satisfying the following formulas (2) and (3) with a total plasticizer content of the rubber composition, a total styrene content S (% by mass) of the rubber component, and a land ratio LR (%) and a thickness T (mm) of the tread: Amount of silica / Amount of carbon black > 1 <img class="EMIRef" id="064a6d3e-f4d4-4b7b-bde0-33af33543b38-ia01" /> Total plasticizer content / LR × 100 > 50 <img class="EMIRef" id="064a6d3e-f4d4-4b7b-bde0-33af33543b38-ia02" /> S × T < 300 . <img class="EMIRef" id="064a6d3e-f4d4-4b7b-bde0-33af33543b38-ia03" />

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Provided is a padel bat 2 having excellent durability and stiffness. A padel bat 2 has a handle 4 and a head 6. The head 6 has a face fabric 18. The face fabric 18 has a first fiber inclined in a first direction relative to the axial direction of the head 6, and a second fiber inclined in a second direction relative to the axial direction. The head 6 further has a plurality of holes 20. A first array inclined in the first direction relative to the axial direction and a second array inclined in the second direction relative to the axial direction are each formed of the holes 20. A direction of the first fiber and a direction of the first array coincide with each other. A direction of the second fiber and a direction of the second array coincide with each other.

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