Sumitomo Rubber Industries Limited

Inoac Corporation

Naoki Yukawa

Masami Nishikawa

Mutsuki Sugimoto

Satoshi Yamada

Chieko Aoki

Hideaki Sugihara

Tokuzo Nakajima

Kazumi Yamazaki

Takashi Tanaka

Yasuo Wada

Makoto Hizume

Yutaka Ichiryu

Hidehiko Hino

Atsuhiko Itakura

Yuji Sasaki

Masahiro Hanya

Hiroyuki Kobayashi

Tadao Matsumoto

Toshiaki Suzuki

Mitsuhiro Wada

Hirotsugu Hasegawa

Yasuo Mitarai

Daisuke Kudo

Yasuaki Kuniyasu

Takuya Sato

Keiichi Nakadera

Kentaro Yagyu

Hiroshi Hamada

Yogun Kida

Sho Matsunami

A pneumatic tire is provided with a noise damper made of a sponge material attached to a radially inner surface of the tread portion. The noise damper has protruding portions protruding from a radially inner surface of a band-shaped base portion. The protruding portions extend from one edge to the other edge of the base portion in the widthwise direction, and arranged at intervals in the tire circumferential direction. In a cross section of the tire parallel with the tire equatorial plane, the radially inner surface of each of the protruding portions includes a flat portion, and the radially inner surface of the base portion includes an arc portion parallel with the inner surface of the tread portion.

Pneumatic tire with noise damper

The present invention provides a sealant tire with excellent noise reducing properties and high productivity. The present invention relates to a sealant tire including a porous sound-absorbing material attached to the inner side of an innerliner through a sealant layer, the sealant layer containing 1 to 30 parts by weight of an inorganic filler per 100 parts by weight of butyl rubber.

Sealant tire

A pneumatic tire and a method for producing the pneumatic tire, wherein the pneumatic tire includes a generally string-shaped adhesive sealant, the sealant is continuously and spirally attached at least to the inner periphery of the tire that corresponds to a tread portion, the sealant has a wider portion on at least one of the longitudinal ends thereof, and the wider portion has a width larger than that of the longitudinally adjoining portion.

Pneumatic tire and method for producing same

A tirefor a motorcycle comprises a tread portionprovided on an inner surfaceSi thereof with a sealant layerfor preventing puncture. In each half of a cross-sectional view of the tire, when the tread portionis virtually divided into a center regionC, a middle regionM, and a shoulder regionS, a thickness tm of the sealant layerin the middle regionM is larger than a thickness tc of the sealant layerin the center regionC.

Tire for a motorcycle

Provided is a pneumatic tire having sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by applying a sealant to the inner periphery of a tire from which mold release agents have been removed.

Pneumatic tire with innerliner, mold release agent layer, and sealant layer

A pneumatic tire includes a resonator attached to the inner periphery of the tire, the resonator including a tube with an opening, and a cavity connected to the tube. The pneumatic tire further includes s a tread portion and each resonator faces the tread portion, the tread portion includes at least one circumferential longitudinal groove, and the opening is provided to penetrate a circumferential longitudinal groove of the tread portion.

Pneumatic tire with sealant layer and at least one resonator, and method for producing same

The pneumatic tirefor a motorcycle comprises a tread portioncomprising a belt layer, an inner liner layermade of air impermeable rubber and arranged radially inside the belt layer, and a sealant layerattached to a radially inner surface () of the inner liner layer. The sealant layercomprises a crown portionA arranged at a center thereof in a tire axial direction and a pair of shoulder portionsB arranged on both sides of the crown portionA in the tire axial direction. Viscosity &#x3bc;of the shoulder portionsB is larger than viscosity &#x3bc;of the crown portionA.

Pneumatic tire for a motorcycle

A pneumatic tire includes a tread, side walls, beads, a carcass, a belt layer, an inner-liner layer, and a sealant layer. The inner-side surface of the inner-liner layer to which the sealant layer is adhered has profile that satisfies L&#x3c;L&#x3c;L, L&#x2264;5 mm, L&#x2264;9.5 mm, and L&#x2264;11 mm, where L, Land Lrepresent heights in a radial direction measured from a base height point to the inner-side surface of the inner-liner layer at positions located in an axially inward direction from an axial outer edge of the belt layer by 5%, 10% and 15% of a maximum width of the belt layer, and the base height point is a point on an axial-direction line through the intersection where a radial-direction line passing through the axial outer edge of the belt layer intersects the inner-side surface of the inner-liner layer.

Pneumatic tire

Provided is a pneumatic tire in which a sealant layer entirely exhibits sufficient sealing performance. The present invention relates to a pneumatic tire including a sealant layer located radially inside an innerliner, the sealant layer being formed by continuously and spirally applying a generally string-shaped sealant to the inner periphery of a tire in the tire width direction from one side to the other, the attachment start portion of the sealant being located tire-widthwise inward from the tire-widthwise end of the sealant layer.

Provided are a rubber composition for pneumatic tires with excellent fluidity and excellent degradation resistance, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for pneumatic tires containing a rubber component including a halogenated butyl rubber, and an organic peroxide.

Rubber composition for pneumatic tires

Provided are a rubber composition for pneumatic tires which is excellent in adhesion, sealing performance, fluidity, and processability, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for pneumatic tires containing, per 100 parts by mass of a rubber component including a butyl-based rubber: 100 to 400 parts by mass of a liquid polymer; 1 to 40 parts by mass of an organic peroxide; and 1 to 40 parts by mass of a crosslinking activator.

A pneumatic tire includes a side wall having a side surface and a roughened region formed on the side surface such that the roughened region is extending in circumferential direction. The roughened region includes lands and dimples formed between adjacent lands, the lands include first lands and second lands formed such that the first and second lands are alternately arrayed in the circumferential direction and the first and second lands are inclined relative to radial direction in opposite inclination directions, and the roughened region is formed such that when the tire is mounted on a normal rim and filled with air at normal inflation pressure, the roughened region has an outer periphery formed on radially inner side of position 30 mm away in radially inward direction from tire maximum-width position, and the roughened region has an inner periphery formed on radially outer side of radially outer edge of the rim.

The purpose of the present invention is to inhibit deterioration in the external appearance of a sound suppressor, even when used in cold areas. This sound-suppressor-equipped pneumatic tire includes: a pneumatic tire provided with a tread section; and a sponge-like sound suppressor which is affixed to a tire inner cavity-side surface of the tread section, and which extends in the peripheral direction of the tire. In the sound suppressor, a plurality of slits are formed in an exposed surface which faces the tire inner cavity.

Sound-suppressor-equipped pneumatic tire, and sound suppressor for tires

A run flat tire is provided having a line Lconnecting point Phaving height Hof 17 mm; and point Pat which a thickness from point Pis minimum thickness Ts. Point C represents a point which is distant from point Pon line Lby a distance that is 0.4 times Ts. A point B represents a point of intersection of: line Lthat extends in the axial direction through radially outer end of core; and line Lthat extends in the radial direction through an axially outer end of core side portionof turned-up portion. A line Lpasses through point C and point B. The thickness Ts is greater than or equal to 10 mm, and not greater than 17 mm. The turned-up portionextends through a region surrounded by an axially outer surface of main portion, and lines L-L

A pneumatic tirehas a marking on each sidewallthereof. A large number of dimplesare formed in a region between the marking and a rim protector. These dimplesare arranged along a circumferential direction. These dimplesform a row. The row includes: (1) dimples each having a plane shape of a circle; or (2) dimples in each of which a plane shape is substantially a rectangle, and a ratio of a length in the circumferential direction to a width in a radial direction is equal to or greater than 1.0 and equal to or less than 3.0.

Growing community of inventors

Kobe, Japan

Naoki Yukawa