JPH03213409A - Heavy duty pneumatic radial tire - Google Patents
Heavy duty pneumatic radial tireInfo
- Publication number
- JPH03213409A JPH03213409A JP2004541A JP454190A JPH03213409A JP H03213409 A JPH03213409 A JP H03213409A JP 2004541 A JP2004541 A JP 2004541A JP 454190 A JP454190 A JP 454190A JP H03213409 A JPH03213409 A JP H03213409A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- protruding
- outside
- maximum width
- carcass layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011324 bead Substances 0.000 claims abstract description 23
- 230000007423 decrease Effects 0.000 claims description 5
- 241000254043 Melolonthinae Species 0.000 description 10
- 238000004804 winding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ビード部からサイドウオール部にかけてのプ
ロファイルを特定することによりビード部耐久性を低減
させることなく軽量化を図ると共に操縦安定性を向上さ
せた重荷重用空気入りラジアルタイヤに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention aims at reducing weight without reducing the durability of the bead portion and improving handling stability by specifying the profile from the bead portion to the sidewall portion. This invention relates to an improved pneumatic radial tire for heavy loads.
一般に、重荷重用空気入りラジアルタイヤのビード部は
、重い荷重を支えるために、カーカス層巻き上げ端の外
側にスチールチエ−ファーやナイロンチエ−ファーを配
置した構造が一般的である。これは、ビード付近で最も
セパレーションの発生し易いカーカス端末部を保護する
ためのもので、また、この見地からカーカス層巻き上げ
端付近はゴムのゲージ厚（肉厚）を最大にするような設
計がなされていた。また、このゴム厚の最大位置からタ
イヤ最大幅位置までのゲージ厚は、操縦安定性を確保す
る見地からは、滑らかに漸減するようになっていること
が望ましい。Generally, the bead portion of a pneumatic radial tire for heavy loads generally has a structure in which a steel chafer or a nylon chafer is arranged outside the rolled up end of the carcass layer in order to support heavy loads. This is to protect the end of the carcass where separation is most likely to occur near the bead, and from this point of view, the design is such that the gauge thickness (wall thickness) of the rubber is maximized near the winding end of the carcass layer. It had been done. Further, from the viewpoint of ensuring steering stability, it is desirable that the gauge thickness from the maximum rubber thickness position to the maximum tire width position gradually decreases smoothly.
ところが、従来、重荷重用空気入りラジアルタイヤのビ
ード部からサイドウオール部にかけての外表面ば、空気
充填前後において外側に突出した凸状曲面となっている
。すなわち、上記外表面に相当する金型成形面（内表面
）は凹んだ形状になっているので、グリーンタイヤを金
型内で加硫するに際して、ゴムが上記凹んだ箇所に流入
して滞り、ゴム流れが悪（なってしまうという現象があ
った。このため、チエ−ファーの上端やチエ−ファーの
外側に配置されているリムクツションゴムの上端などの
近くでゴムが十分に流動しなくなり、これらの上端とゴ
ムとの密着が不十分となって、セパレーションが発生ず
るおそれがあった。したがって、従来の重荷重用空気入
りラジアルタイヤでは、上述のようなゴム流れの不足分
を補うために、ゲージ厚が最大となるべきカーカス層巻
き上げ端の位置からタイヤ最大幅位置に至る領域のゲー
ジ厚も成る程度太き（していたのが実情であった。However, conventionally, the outer surface of a heavy-duty pneumatic radial tire from the bead portion to the sidewall portion has a convex curved surface that protrudes outward before and after air filling. That is, since the molding surface (inner surface) corresponding to the outer surface has a concave shape, when a green tire is vulcanized in the mold, rubber flows into the concave area and becomes stagnant. There was a phenomenon where the rubber flow was poor.As a result, the rubber did not flow sufficiently near the upper end of the chafer or the upper end of the rim traction rubber placed on the outside of the chafer. , there was a risk of separation occurring due to insufficient adhesion between these upper ends and the rubber.Therefore, in conventional heavy-duty pneumatic radial tires, in order to compensate for the lack of rubber flow as described above, The actual situation was that the gauge thickness in the region from the position of the rolled up end of the carcass layer, where the gauge thickness should be maximum, to the tire maximum width position was also thick enough.
しかしながら、このようにゴムのゲージ厚を大きくする
と、この大きくした箇所の剛性が大となり、ビード部か
らサイドウオール部にかけての剛性が不均一となるので
操縦安定性が悪化し、また、タイヤ重量が増大して燃費
を悪化させるという問題があった。However, when the rubber gauge thickness is increased in this way, the rigidity of the increased area increases, and the rigidity becomes uneven from the bead to the sidewall, resulting in poor handling stability and an increase in tire weight. There is a problem in that the fuel consumption increases and fuel efficiency deteriorates.
本発明は、ビード部からサイドウオール部にかけてのプ
ロファイルを特定することにより、ビード部耐久性を低
減させることなくゲージ厚を小さくして、軽量化と共に
操縦安定性を向上させた重荷重用空気入りラジアルタイ
ヤを提供することを目的とする。The present invention is a heavy-duty pneumatic radial that reduces the gauge thickness without reducing the bead durability by specifying the profile from the bead part to the sidewall part, which reduces weight and improves handling stability. The purpose is to provide tires.
本発明は、少なくとも１層のカーカス層をビードコアの
内側から外側に巻き上げ、トレッド部にベルト層を配置
した重荷重用空気入りラジアルタイヤであって、このタ
イヤに正規空気圧の５％を充填したときの放射方向断面
のタイヤ最大幅位置からリムフランジ相当位置までのサ
イド部外表面を、前記タイヤ最大幅近辺の領域と前記カ
ーカス層の巻き上げ端近辺の領域とをそれぞれタイヤ外
側に突出させると共に、前記両領域に挟まれる領域をタ
イヤ内側に突出させた形状にし、かつ前記カーカス層の
巻き上げ端近辺のゲージ厚を最大にして前記タイヤ最大
幅位置まで漸減するようにし、前記タイヤ内側に突出さ
せた領域のタイヤ半径方向の長されを、リム径に相当す
る位置からタイヤ最大幅位置までの高さＨの少なくとも
４０％以上にし、さらに、正規空気圧を充填したとき、
前記タイヤ内側に突出した領域がタイヤ外側に突出して
前記タイヤ外側に突出した両領域と共に１つの凸状曲線
を形成することを特徴とする。The present invention is a heavy-duty pneumatic radial tire in which at least one carcass layer is rolled up from the inside to the outside of a bead core, and a belt layer is arranged in the tread part, and the tire has a tire with a belt layer on the tread. The outer surface of the side part from the tire maximum width position to the position corresponding to the rim flange in the radial direction cross section is such that a region near the tire maximum width and a region near the rolled-up end of the carcass layer respectively protrude to the outside of the tire. The region sandwiched between the regions is shaped to protrude inward of the tire, and the gauge thickness near the rolled-up end of the carcass layer is maximized and gradually decreases to the maximum width position of the tire, and the region protruded inward the tire. When the length of the tire in the radial direction is at least 40% of the height H from the position corresponding to the rim diameter to the tire maximum width position, and when the tire is filled with the regular air pressure,
The area protruding to the inside of the tire may protrude to the outside of the tire to form one convex curve together with both areas protruding to the outside of the tire.
このように本発明では、タイヤ最大幅位置からリムフラ
ンジ相当位置までのサイド部外表面に、タイヤ内側に突
出した領域を設けたために、グリーンタイヤ加硫時のゴ
ム流れが悪くならないので、チエ−ファーの上端やリム
クツションゴムの上端付近のゲージ厚を従来のものに比
し小さくすることができる。しかも、カーカス層の巻き
上げ近辺のゴムのゲージ厚を最大にして、タイヤ最大幅
位置までを漸減させるようにすることができる。In this way, in the present invention, since a region protruding inward of the tire is provided on the outer surface of the side part from the tire maximum width position to a position corresponding to the rim flange, the rubber flow during green tire vulcanization is not deteriorated. The gauge thickness near the upper end of the fur and the upper end of the rim compression rubber can be made smaller than that of conventional products. Moreover, the gauge thickness of the rubber near the winding of the carcass layer can be maximized and gradually decreased up to the tire maximum width position.
以下、図を参照して上記手段につき詳しく説明する。Hereinafter, the above means will be explained in detail with reference to the drawings.
図は正規空気圧の５％を充填した本発明の重荷重用空気
入りラジアルタイヤの一例の放射方向半断面説明図であ
る。この図において、ビード部Ａではビードコア１の廻
りにカーカス層２の端部が内側から外側に折り返されて
巻き上げられている。また、カーカス層巻き上げ部の外
側には、カーカス層巻き上げ部からカーカス層本体を取
り囲むように補強層３がビードコア１の廻りに配置され
ている。カーカス層巻き上げ端２ａおよび補強層３の外
側には２枚のチエ−ファー（ナイロンチエ−ファー）４
が配置され、その上端（トレッド側の末端）４ａの外側
にはリムクツションゴム５が配置されている。６はビー
ドコア１の上に配置されたビードフィラー１０はトレン
ド部、１２はベルト層である。The figure is a radial half-sectional explanatory diagram of an example of a heavy-duty pneumatic radial tire of the present invention filled with 5% of the normal air pressure. In this figure, in the bead portion A, the end portion of the carcass layer 2 is folded back from the inside to the outside and rolled up around the bead core 1. Further, on the outside of the carcass layer winding part, a reinforcing layer 3 is arranged around the bead core 1 so as to surround the carcass layer main body from the carcass layer winding part. Two chafers (nylon chafers) 4 are placed on the outside of the carcass layer rolled up end 2a and the reinforcing layer 3.
is arranged, and a rim traction rubber 5 is arranged outside the upper end (end on the tread side) 4a. 6 is a bead filler 10 placed on the bead core 1, which is a trend part, and 12 is a belt layer.
ここで、“正規空気圧の５％を充填した”とは、タイヤ
が金型成形面と実質的に同一の断面形状を保つに足る最
少の空気圧を充填したことをいう。正規空気圧は、ＪＡ
ＴＭＡで定められる空気圧である。Here, "filled with 5% of the normal air pressure" means that the tire is filled with the minimum air pressure sufficient to maintain the cross-sectional shape substantially the same as the molded surface. The regular air pressure is JA
This is the air pressure determined by TMA.
（１）本発明では、上記図に示される重荷重用空気入り
ラジアルタイヤの放射方向断面において、タイヤ最大幅
位置ａからリムフランジ位置すまでのサイド部外表面を
、タイヤ外側に突出した領域（曲率半径Ｒａの領域）と
タイヤ内側に突出した領域（曲率半径−Ｒｂの領域）と
タイヤ外側に突出した領域（曲率半径Ｒｅの領域）との
順で構成する。曲率半径Ｒａの領域はタイヤ最大幅位置
近辺に相当し、曲率半径Ｒｃの領域はカーカス層の巻き
上げ端近辺の領域に相当する。(1) In the present invention, in the radial cross section of the heavy-duty pneumatic radial tire shown in the above figure, the outer surface of the side part from the tire maximum width position a to the rim flange position is a region (curvature A region with radius Ra), a region protruding inward of the tire (region with radius of curvature - Rb), and a region protruding outward with radius of the tire (region with radius of curvature Re). The area of the radius of curvature Ra corresponds to the vicinity of the tire maximum width position, and the area of the radius of curvature Rc corresponds to the area of the vicinity of the rolled-up end of the carcass layer.
このようにサイド部外表面にタイヤ内側に突出した領域
を設けたため、この外表面に相当する金型成形面が凸状
となるので、グリーンタイヤを金型で加硫するに際して
ゴムがこの箇所で滞ることがなく、円滑に流れるように
なる。したがって、チエ−ファー４の上端４ａやリムク
ツションゴム５の上端５ａの付近のゲージ厚を従来に比
して小さくすることができる。また、最も補強を要する
カーカス層の巻き上げ端近辺を最大のゲージ厚にして、
タイヤ最大幅位置までを漸減するような形状にすること
ができる。By providing a region on the outer surface of the side part that protrudes toward the inside of the tire, the mold molding surface corresponding to this outer surface becomes convex, so when the green tire is vulcanized in the mold, the rubber is It will flow smoothly without any stagnation. Therefore, the gauge thickness near the upper end 4a of the chafer 4 and the upper end 5a of the rim compression rubber 5 can be made smaller than in the past. In addition, the area near the rolled-up end of the carcass layer that requires the most reinforcement is made to have the maximum gauge thickness.
It is possible to form a shape that gradually decreases up to the tire maximum width position.
（２） タイヤ内側に突出した曲率半径−Ｒｂの領域
のタイヤ半径方向の長されを、リムのリム径に相当する
位置１１からタイヤ最大幅位置ａまでの高さＨの少なく
とも４０％以上、好ましくは５０％〜７５％とする。４
０％未満とすると領域が小さくなり、効果が薄くなる。(2) The length in the tire radial direction of the area with the radius of curvature -Rb that protrudes inside the tire is preferably at least 40% of the height H from the position 11 corresponding to the rim diameter of the rim to the tire maximum width position a. is 50% to 75%. 4
When it is less than 0%, the area becomes small and the effect becomes weak.
７５％を超えると、タイヤ内側突出部の領域がタイヤ最
大幅付近に或いはカーカス巻き上げ端付近に達してしま
う。If it exceeds 75%, the area of the tire inner protrusion will reach around the maximum width of the tire or around the end of the carcass roll-up.
タイヤ最大幅付近に達した場合は、カーカスラインの適
正配置ができなくなり、操縦安定性が低下する。カーカ
ス巻き上げ端付近に達した場合は、ゴムゲージが確保で
きなくなり、耐久性が低下する。長ざｈおよび高さＨは
、それぞれ、タイヤ赤道面ｍに対して平行である。When the width of the tire reaches near the maximum width, the carcass line cannot be properly arranged, and steering stability deteriorates. When the carcass winds up near the end, the rubber gauge cannot be secured and durability decreases. The length h and the height H are each parallel to the tire equatorial plane m.
この範囲内にチエ−ファー４の」一端４ａやリムクツシ
ョンゴム５の上端５ａなどが入る。また、この範囲内で
ゲージ厚を従来に比して小さくするすることにより、軽
量化と共にタイヤ最大幅位置ａからリムフランジ位置す
にかけての剛性が従来に比して均一となる。このゲージ
厚を小さくするに際しては、上述したようにカーカス層
の巻き−にげ端２ａに相当する位置からタイヤ最大幅位
ｉａに向って徐々に小さくする。The one end 4a of the chafer 4, the upper end 5a of the rim compression rubber 5, etc. fall within this range. Furthermore, by making the gauge thickness smaller than the conventional one within this range, the weight can be reduced and the rigidity from the tire maximum width position a to the rim flange position can be made more uniform than the conventional one. When reducing the gauge thickness, as described above, it is gradually reduced from the position corresponding to the rolled-up edge 2a of the carcass layer toward the maximum width ia of the tire.
これによって、ビード部からサイドウオール部にかけて
の剛性が滑らかに連続的に変化するようになる。また、
これによって、操縦安定性の著しい向上を図ることがで
きるのである。。This allows the rigidity to change smoothly and continuously from the bead portion to the sidewall portion. Also,
This makes it possible to significantly improve steering stability. .
（３）正規空気圧充填時には、上記タイヤ内側に突出し
た領域がタイヤ外側に突出して両方の上記タイヤ外側に
突出した領域と一緒に１つの凸状曲線を形成する。(3) When the tire is filled with normal air pressure, the inwardly projecting region of the tire projects outwardly to form one convex curve together with both of the outwardly projecting regions of the tire.
これによって、走行時にビード部外面にかかるタイヤ引
張力が均一になり、操縦安定性がいっそう向上する。This makes the tire tensile force applied to the outer surface of the bead portion uniform during driving, further improving steering stability.
以上説明したように本発明によれば、正規空気圧の５％
を充填した重荷重用空気入りラジアルタイヤの放射方向
断面において、タイヤ最大幅位置からリムフランジ位置
までのサイド部外表面にタイヤ内側に突出した領域を設
けてビード部からサイドウオール部にかけてのプロファ
イルを特定したために、グリーンタイヤ加硫時のゴム流
れが悪くならないので、上記タイヤ内側に突出した領域
のゲージ厚を従来に比して小さくすることができる。し
たがって、本発明によれば、ビード部耐久性を低減させ
ることなく、軽量化と共に操縦安定性を向上させること
がで０
４゜
きる。As explained above, according to the present invention, 5% of the normal air pressure
In the radial cross-section of a heavy-duty pneumatic radial tire filled with carbon dioxide, a region protruding inward of the tire is created on the outer surface of the side part from the maximum tire width position to the rim flange position, and the profile from the bead part to the sidewall part is determined. Therefore, the rubber flow during vulcanization of the green tire does not deteriorate, so that the gauge thickness of the region protruding inward of the tire can be made smaller than that of the conventional tire. Therefore, according to the present invention, it is possible to reduce the weight and improve the steering stability by 0.4 degrees without reducing the durability of the bead portion.
図は正規空気圧の５％を充填した本発明の重荷重用空気
入りラジアルタイヤの一例の放射方向半断面説明図であ
る。
１・・・ビードコア、２・・・カーカス層、２ａ・・・
カーカス層巻き上げ端、３・・・補強層、４・・・チエ
−ファー、４ａ・・・チエ−ファーの上端、５・・・リ
ムクツションゴム、６・・・ビードフィラー、１０・・
・トレンド、１１・・・リム径に相当する位置、１２・
・・ベルト層。The figure is a radial half-sectional explanatory diagram of an example of a heavy-duty pneumatic radial tire of the present invention filled with 5% of the normal air pressure. 1... Bead core, 2... Carcass layer, 2a...
Carcass layer rolled up end, 3... Reinforcement layer, 4... Chafer, 4a... Upper end of chafer, 5... Limbushion rubber, 6... Bead filler, 10...
・Trend, 11...Position corresponding to the rim diameter, 12・
...Belt layer.
Claims (1)
側に巻き上げ、トレッド部にベルト層を配置した重荷重
用空気入りラジアルタイヤにおいて、該タイヤに正規空
気圧の５％を充填したときの放射方向断面のタイヤ最大
幅位置からリムフランジ相当位置までのサイド部外表面
を、前記タイヤ最大幅近辺の領域と前記カーカス層の巻
き上げ端近辺の領域とをそれぞれタイヤ外側に突出させ
ると共に、前記両領域に挟まれる領域をタイヤ内側に突
出させた形状にし、かつ前記カーカス層の巻き上げ端近
辺のゲージ厚を最大にして前記タイヤ最大幅位置まで漸
減するようにし、前記タイヤ内側に突出させた領域のタ
イヤ半径方向の長されを、リム径に相当する位置からタ
イヤ最大幅位置までの高さＨの少なくとも４０％以上に
し、さらに、正規空気圧を充填したとき、前記タイヤ内
側に突出した領域がタイヤ外側に突出して前記タイヤ外
側に突出した両領域と共に１つの凸状曲線を形成するこ
とを特徴とする重荷重用空気入りラジアルタイヤ。In a heavy-duty pneumatic radial tire in which at least one carcass layer is rolled up from the inside to the outside of a bead core and a belt layer is arranged on the tread, the maximum tire cross-section in the radial direction when the tire is filled with 5% of the normal air pressure. On the outer surface of the side part from the wide width position to the position corresponding to the rim flange, a region near the maximum width of the tire and a region near the rolled-up end of the carcass layer are respectively projected to the outside of the tire, and a region sandwiched between the two regions is The carcass layer has a shape that protrudes inside the tire, and the gauge thickness near the rolled-up end of the carcass layer is maximized and gradually decreases to the tire maximum width position, and the length of the area that protrudes inside the tire in the tire radial direction is is at least 40% of the height H from the position corresponding to the rim diameter to the tire maximum width position, and furthermore, when the tire is filled with the normal air pressure, the area protruding inside the tire will protrude to the outside of the tire. 1. A pneumatic radial tire for heavy loads, characterized in that both regions protruding from each other form one convex curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004541A JPH03213409A (en) | 1990-01-16 | 1990-01-16 | Heavy duty pneumatic radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004541A JPH03213409A (en) | 1990-01-16 | 1990-01-16 | Heavy duty pneumatic radial tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03213409A true JPH03213409A (en) | 1991-09-18 |
Family
ID=11586907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004541A Pending JPH03213409A (en) | 1990-01-16 | 1990-01-16 | Heavy duty pneumatic radial tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03213409A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002500121A (en) * | 1998-01-12 | 2002-01-08 | コンパニー ゼネラール デ エタブリッスマン ミシュラン−ミシュラン エ コムパニー | Tire bead with circumferential reinforcement element |
| WO2020245240A1 (en) * | 2019-06-06 | 2020-12-10 | Compagnie Generale Des Etablissements Michelin | Tyre having optimized sidewalls and crown reinforcement made up of two working crown layers and a layer of circumferential reinforcing elements |
| WO2020245239A1 (en) * | 2019-06-06 | 2020-12-10 | Compagnie Generale Des Etablissements Michelin | Tyre having a crown reinforcement made up of two working crown layers and optimized sidewalls |
-
1990
- 1990-01-16 JP JP2004541A patent/JPH03213409A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002500121A (en) * | 1998-01-12 | 2002-01-08 | コンパニー ゼネラール デ エタブリッスマン ミシュラン−ミシュラン エ コムパニー | Tire bead with circumferential reinforcement element |
| WO2020245240A1 (en) * | 2019-06-06 | 2020-12-10 | Compagnie Generale Des Etablissements Michelin | Tyre having optimized sidewalls and crown reinforcement made up of two working crown layers and a layer of circumferential reinforcing elements |
| WO2020245239A1 (en) * | 2019-06-06 | 2020-12-10 | Compagnie Generale Des Etablissements Michelin | Tyre having a crown reinforcement made up of two working crown layers and optimized sidewalls |
| FR3096933A1 (en) * | 2019-06-06 | 2020-12-11 | Compagnie Generale Des Etablissements Michelin | PNEUMATIC FEATURING OPTIMIZED SIDES AND A TOP REINFORCEMENT CONSISTING OF TWO WORKING TOP LAYERS AND ONE LAYER OF CIRCUMFERENTIAL REINFORCEMENT ELEMENTS |
| FR3096930A1 (en) * | 2019-06-06 | 2020-12-11 | Compagnie Generale Des Etablissements Michelin | PNEUMATIC CONTAINING A TOP REINFORCEMENT CONSISTING OF TWO WORKING TOP LAYERS AND OPTIMIZED SIDES |
| CN113950421A (en) * | 2019-06-06 | 2022-01-18 | 米其林集团总公司 | Tyre with a crown reinforcement consisting of two working crown layers and optimized sidewalls |
| US11850893B2 (en) | 2019-06-06 | 2023-12-26 | Compagnie Generale Des Etablissements Michelin | Tire having optimized sidewalls and crown reinforcement made up of two working crown layers and a layer of circumferential reinforcing elements |
| CN113950421B (en) * | 2019-06-06 | 2024-03-29 | 米其林集团总公司 | Tyre with crown reinforcement consisting of two working crown layers and optimized sidewalls |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4408648A (en) | Tubeless radial ply tire for heavy-duty vehicles | |
| KR100391003B1 (en) | Pneumatic radial tires for truck and bus mounted on 15° drop center rim | |
| US3935892A (en) | Pneumatic tired wheel | |
| US4609023A (en) | Pneumatic tire with sidewall insert | |
| JP4221622B2 (en) | Run-flat tire with improved bead / rim interface | |
| JP2574816B2 (en) | Safety tire | |
| US20060169379A1 (en) | Tyre and rim for a vehicle wheel | |
| EP0605177A1 (en) | Pneumatic tire | |
| JPS62255205A (en) | Pneumatic safety tire | |
| JPH10157408A (en) | Pneumatic tire | |
| JP2721359B2 (en) | Pneumatic radial tire with excellent beating durability | |
| JP2003025808A (en) | Pneumatic radial tire | |
| US6651715B2 (en) | Pneumatic radial tires for truck and bus mounted on 15° drop center rim | |
| US5238039A (en) | Pneumatic radial tires having carcass line with plural inflection points | |
| JPH03213409A (en) | Heavy duty pneumatic radial tire | |
| JP2604879B2 (en) | Pneumatic radial tire | |
| US5203934A (en) | Pneumatic radial tire with high durable bead portions | |
| JP3410647B2 (en) | Heavy duty tire | |
| EP0413426A2 (en) | Pneumatic radial tires having improved bead portion durability | |
| JP3410648B2 (en) | Heavy load tire and method of manufacturing the same | |
| EP4005826B1 (en) | Radial tire | |
| EP1878564B1 (en) | Method of manufacturing run-flat tire | |
| JPS6351887B2 (en) | ||
| JPH0463705A (en) | Radial tire | |
| JP4518605B2 (en) | Pneumatic tire |