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1. WO2020095891 - RUN-FLAT TIRE

Publication Number WO/2020/095891
Publication Date 14.05.2020
International Application No. PCT/JP2019/043278
International Filing Date 05.11.2019
IPC
B60C 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
1Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 15/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
06Flipper strips, fillers, or chafing strips
B60C 17/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
17Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
C08L 7/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
7Compositions of natural rubber
C08L 23/22 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
20having four to nine carbon atoms
22Copolymers of isobutene; Butyl rubber
Applicants
  • 株式会社ブリヂストン BRIDGESTONE CORPORATION [JP]/[JP]
Inventors
  • 山本 淳 YAMAMOTO, Atsushi
Agents
  • 特許業務法人太陽国際特許事務所 TAIYO, NAKAJIMA & KATO
Priority Data
2018-21029708.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RUN-FLAT TIRE
(FR) PNEU À AFFAISSEMENT LIMITÉ
(JA) ランフラットタイヤ
Abstract
(EN)
This run-flat tire is provided with: a pair of bead cores; a carcass that is provided across the pair of bead cores and that has ends locked with the bead cores; an inner liner provided on the tire inner surface side of the carcass and that has a diene rubber content not less than 20 mass% with respect to the total amount of rubber included in the inner liner; a side-reinforcing rubber layer that is provided between the inner liner and the carcass at the tire side portions so as to be in direct contact with the inner liner, and that extends in the tire radial direction along the inner surface of the carcass; and a belt layer that is provided outward in the tire radial direction of the carcass, and that has a cord and a cord-coating layer containing a resin and coating the cord; and a tread provided outward in the tire radial direction of the belt layer.
(FR)
L'invention concerne un pneu à affaissement limité pourvu : d'une paire de tringles ; d'une carcasse qui est disposée à travers la paire de tringles et qui a des extrémités verrouillées avec les tringles ; d'un revêtement interne disposé sur le côté surface interne du pneu de la carcasse et qui a une teneur en caoutchouc diénique qui n'est pas inférieure à 20 % en masse par rapport à la quantité totale de caoutchouc incluse dans le revêtement interne ; d'une couche de caoutchouc de renforcement latéral qui est disposée entre le revêtement interne et la carcasse au niveau des parties latérales du pneu de façon à être en contact direct avec le revêtement interne, et qui s'étend dans la direction radiale du pneu le long de la surface interne de la carcasse ; et d'une couche de ceinture qui est disposée vers l'extérieur dans la direction radiale du pneu de la carcasse et qui a un cordon et une couche de revêtement de cordon contenant une résine et recouvrant le cordon ; et d'une bande de roulement disposée vers l'extérieur dans la direction radiale du pneu de la couche de ceinture.
(JA)
一対のビードコアと、一対のビードコアに跨り、端部がビードコアに係止されたカーカスと、カーカスのタイヤ内面側に設けられたインナーライナーであって、インナーライナーに含まれるゴムの総量に対しジエン系ゴムの含有率が20質量%以上であるインナーライナーと、タイヤサイド部のカーカスとインナーライナーとの間にインナーライナーと直接接して設けられ、カーカスの内面に沿ってタイヤ径方向に延びるサイド補強ゴム層と、カーカスのタイヤ径方向外側に設けられ、コードとコードを被覆し樹脂を含むコード被覆層とを有するベルト層と、ベルト層のタイヤ径方向外側に設けられたトレッドと、を備えるランフラットタイヤ
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