JPH02293204A - Pneumatic tire for winter - Google Patents
Pneumatic tire for winterInfo
- Publication number
- JPH02293204A JPH02293204A JP1114045A JP11404589A JPH02293204A JP H02293204 A JPH02293204 A JP H02293204A JP 1114045 A JP1114045 A JP 1114045A JP 11404589 A JP11404589 A JP 11404589A JP H02293204 A JPH02293204 A JP H02293204A
- Authority
- JP
- Japan
- Prior art keywords
- tread
- land
- ridge
- tire
- snow
- 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
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012345 traction test Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
- B60C11/042—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section
- B60C11/047—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section the groove bottom comprising stone trapping protection elements, e.g. ribs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
空気入りタイヤ、なかでもトラックやバスなどのような
重荷重用空気入りタイヤの雪上性能の改良を図った積雪
路面用空気入りタイヤを提案しようとするものである。[Detailed Description of the Invention] (Industrial Application Field) It is an object of the present invention to propose a pneumatic tire for use on snowy roads, which improves the snow performance of pneumatic tires, especially pneumatic tires for heavy loads such as trucks and buses. It is something to do.
(従来の技術)
従来の冬期走行用タイヤでは、トレッドの全表面に溝部
とそれにより隔てられた陸部とを配設して凹凸模様を形
成しその溝部の面積を一般用タイヤに比べて増加させる
ことで凹凸模様のエッジを長くして雪上における食い込
み性や氷上での水切り・水はけ性能を向上させることが
試みられてきた。(Prior technology) In conventional winter running tires, grooves and land areas separated by the grooves are arranged on the entire surface of the tread to form an uneven pattern, and the area of the grooves is increased compared to general tires. Attempts have been made to lengthen the edges of the concave-convex pattern to improve the digging ability on snow and the drainage and drainage performance on ice.
(発明が解決しようとする課題)
積雪路面、とくに圧雪路面上においてより大きな駆動力
を得るには圧雪路面中にトレッドの凹凸模様が押し込ま
れる圧印作用の下で雪柱の剪断面積、すなわちトレッド
の溝部面積を大きくすることで、それなりの効果を得る
ことができる。ところで氷結路面上でのとくに制動性能
については、逆に陸部の面積が小さくなるため悪化する
傾向にあった。(Problem to be Solved by the Invention) In order to obtain a larger driving force on a snow-covered road surface, especially on a compacted snow road surface, the shearing area of the snow column, that is, the tread By increasing the groove area, a certain effect can be obtained. However, braking performance, especially on icy roads, tends to deteriorate as the land area becomes smaller.
発明者らの検討によれば凹凸模様を形成する他に、トレ
ッドの円周に沿って互いに隣接する陸部間の溝内に、陸
部表面に対する段下り表面をもつ多数の隆起を配設しそ
の表面を荷重下で接地させることが、積面表面へ食い込
む凹凸模様のエッジを長くしてタイヤの雪上性能に役立
てるとともに、接地面積を増加させて氷上性能を向上で
きることを見い出した。According to studies by the inventors, in addition to forming an uneven pattern, a large number of ridges having a step-down surface relative to the land surface are arranged in the grooves between adjacent land parts along the circumference of the tread. It has been discovered that by making the surface contact the ground under load, the edges of the uneven pattern that digs into the surface of the tire become longer, which helps the tire's performance on snow, and also increases the contact area and improves performance on ice.
すなわち氷雪路等を走行するタイヤでは陸部を雪面に食
い込ませて溝部に形成される雪柱を剪断することで雪上
駆動力を、また多くの陸部表面を路面に接触させること
により氷上制動力を得ることができる。ここに氷上性能
のより一層の改善を図るには陸部表面積を増し、トレッ
ド面と路面との接触面積を増すことにより接地圧を低減
し圧力による水面の溶解を減少できる。In other words, for tires running on icy and snowy roads, driving force on snow is achieved by digging the land into the snow surface and shearing the snow pillars formed in the grooves, and control on ice by bringing more of the surface of the land into contact with the road surface. You can get power. In order to further improve on-ice performance, increasing the land surface area and increasing the contact area between the tread surface and the road surface can reduce ground contact pressure and reduce water surface melting due to pressure.
なお溝部に隆起を設けると溝部の面積が減少し圧雪路で
の走行性能の劣化をきたすうれいがあるが、雪面への陸
部の食い込み量は極めて浅く、高々IInII1程度の
ため雪上での弊害は生じないのである。Note that if a ridge is provided in the groove, the area of the groove decreases and the driving performance on a snow-compacted road is reduced, but the amount of penetration of the land into the snow surface is extremely shallow, at most about IInII1, so it is difficult to drive on snow. No harm will occur.
トレッド溝部内にトレッド表面より一段低い隆起を設け
ると氷上では隆起も接地するためトレッド面と路面との
接触面積が増え氷上制動性が向上し一方、圧雪路面では
隆起の接地圧が低いため、隆起は雪面に食い込まず雪柱
の剪断面積が減少しないので雪上での駆動性能の低下は
ない。If a ridge is provided in the tread groove that is one step lower than the tread surface, the ridge will also contact the ground on ice, increasing the contact area between the tread surface and the road surface and improving braking performance on ice.On the other hand, on compacted snow roads, the ground pressure of the ridge is low, does not dig into the snow surface and the shear area of the snow column does not decrease, so there is no reduction in driving performance on snow.
しかしながら除雪路表や無雪路における走行の際に陸部
間に設けた隆起と、陸部の段差量が陸部摩耗によって減
少し、長期間安定した性能を維持できないところに問題
を残していた。However, when driving on snow-removed or snow-free roads, the bumps created between the land sections and the level difference between the land sections are reduced due to land wear, leaving a problem in that stable performance cannot be maintained over a long period of time. .
すなわち、陸部表面に対する段差表面をもつ隆起が、圧
雪路面中にトレ・ノドの凹凸模様が押し込まれる圧印作
用の下でのせん断力の増強に役立つためには、該隆起の
陸部表面に対する段差がトレッドの完全磨耗に至るまで
の間維持される必要があるのである。上述したような技
術における隆起を単にトレッドの溝底から陸部との間の
細隙を介して直立させた場合には積雪のない路表に対す
る接触に際して容易に曲げ変形を生じて、トレッドの周
りで仮想される段差表面円周の長さは同じく陸部の表面
円周の長さよりも短いにもかかわらずスリップによる段
差表面の磨耗は生じ難く陸部表面の磨耗の方が先行し、
その結果該磨耗表面に段差表面が一致したのちに両表面
でほぼ同様な磨耗が進行したりあるいは、段差量が逆転
する現象が生じ上記の段下り量を維持することができな
いのである。In other words, in order for a ridge with a step surface relative to the land surface to be useful for increasing the shear force under the coining effect where the uneven pattern of the tre-nod is pushed into the compacted snow road surface, the step surface of the ridge relative to the land surface must be must be maintained until the tread is completely worn out. If the ridges in the above-mentioned technique were simply made to stand upright through the narrow gap between the groove bottom of the tread and the land area, they would easily bend and deform when they come into contact with a road surface free of snow, causing damage to the area around the tread. Even though the length of the circumference of the step surface imagined in is shorter than the length of the surface circumference of the land portion, wear of the step surface due to slip is difficult to occur, and wear of the land portion surface precedes.
As a result, after the stepped surface coincides with the worn surface, the wear progresses in substantially the same way on both surfaces, or the amount of stepped steps is reversed, making it impossible to maintain the above-mentioned step descending amount.
タイヤトレッドの摩耗進行の過程を通じて段差表面で陸
部表面におけるのと同様の摩耗速度を生じさせ、これに
より段下り量を摩耗末期まで維持し優れた雪上性能の維
持を遂げることがこの発明の目的である。The purpose of this invention is to produce a similar wear rate on the step surface as on the land surface through the process of tire tread wear, thereby maintaining the amount of step descent until the end of wear and maintaining excellent snow performance. It is.
(課題を解決するための手段)
この発明は、トレッドの全表面に溝部とそれにより隔て
られた陸部とを配設して凹凸模様を形成した空気入りタ
イヤにおいて、トレッドの円周に沿って互いに隣接する
陸部間の溝部内に、陸部表面に対する段差下り表面をも
ち、荷重下において接地する多数の隆起を配設したすべ
り止めパターンを備え、上記隆起を陸部に対して区分す
る細隙は、その深さの方向で陸部に向かう傾斜をもち、
該隆起の段差表面におけるトレッドの内周に沿うさしわ
たしが隆起の付け根に向けて拡大するものとした、こと
を特徴とする冬期走行用空気入りタイヤであり、ここに
上記陸部の隆起に面するエッジが鋭角であること、また
隆起は、トレッドの円周に沿う溝部内を占める延長部分
を有すること、さらに延長部分は、トレッドの円周に沿
って連続するのがさらによい。(Means for Solving the Problem) The present invention provides a pneumatic tire in which an uneven pattern is formed by disposing grooves and land areas separated by the grooves on the entire surface of the tread. In the groove between adjacent land parts, an anti-slip pattern is provided which has a step-down surface with respect to the surface of the land part and has a number of ridges that touch the ground under load, and a narrow strip that separates the ridges with respect to the land part. The gap slopes toward land in the direction of its depth,
A pneumatic tire for winter running, characterized in that the width along the inner periphery of the tread on the step surface of the ridge widens toward the base of the ridge, wherein It is further preferred that the facing edges are sharp and that the ridge has an extension that occupies a groove along the circumference of the tread, and that the extension is continuous along the circumference of the tread.
さて第1図(a) (b)にこの発明に従う隆起を、タ
イヤの回転軸と直交する断面で表し、図中の1はトレッ
ド、2はトレッド1の凹凸模様を形成する溝部、3は同
じく陸部である。Now, Fig. 1 (a) and (b) show the protuberance according to the present invention in a cross section perpendicular to the axis of rotation of the tire, in which 1 is the tread, 2 is the groove forming the uneven pattern of the tread 1, and 3 is the same. This is the land area.
陸部3はトレッド1の周りに沿って隣合う相互間を隔て
ている溝部2の内部に設けた隆起4を挾んでいて、この
隆起4は陸部3の表面に比べ好ましくは1mm程度の段
下がりをなす段差表面4aを有している。The land portion 3 sandwiches a ridge 4 provided inside the groove portion 2 separating adjacent grooves 2 along the periphery of the tread 1, and the ridge 4 has a step of preferably about 1 mm compared to the surface of the land portion 3. It has a step surface 4a that slopes down.
トレッド10面内における隆起4の配列の一例を、第2
図に示したブロック配列トレッドパターンの場合につい
て示した。An example of the arrangement of the protuberances 4 in the plane of the tread 10 is shown in the second example.
The case of the block arrangement tread pattern shown in the figure is shown.
この発明において隆起4は、これを陸部3に対して区分
する細隙5がその深さの方向で陸部3に向かう傾斜をな
すものとして、隆起4の段差表面4aのトレッド1の周
りに沿うさしわたし!1が隆起4の付け根に向かってl
2へと拡大するものとする。 隆起4のトレッド1の展
開平面上に表れる図形は第2図のような平行四辺形をな
す場合の他、いくつかの事例を、共通の凹凸模様になる
トレッドパターンに関してまとめて第3図(a)〜(f
)に示すように、隆起4−1を飛石状の離隔配置(第3
図(a)参照)としたり、隆起4−2のトレンド1の周
りに沿う縦の溝部2内でこれに沿いやや伸長するドング
ボーン状配列(第3図(b)参照)とか、隆起i3,4
−5のトレッド1の周りに沿う縦の溝部2から横の溝部
2に向かって延びた延長部分6を有するもの(第3図(
c) (e)参照)とか、さらに隆起4−4.4−6の
延長部分6が縦又は横の溝内で継ぎ手7で接続されて連
続するもの(第3図(d) (f)参照)とかに種\な
変更も可能である。In this invention, the ridge 4 is formed around the tread 1 on the stepped surface 4a of the ridge 4, with the slit 5 that separates it from the land portion 3 forming an inclination toward the land portion 3 in the depth direction. Follow me! 1 toward the base of bulge 4
It shall be expanded to 2. In addition to the case where the shape of the ridge 4 appearing on the development plane of the tread 1 is a parallelogram as shown in FIG. 2, several cases are summarized in FIG. ) ~ (f
), the ridges 4-1 are spaced apart like stepping stones (third
(see Figure (a)), or a dongbone-like arrangement (see Figure 3 (b)) that extends slightly along the vertical groove 2 along the trend 1 of the ridge 4-2, or the ridges i3, 4.
-5 having an extended portion 6 extending from the vertical groove 2 along the periphery of the tread 1 toward the horizontal groove 2 (see Fig. 3).
c) (see (e)), or those in which the extensions 6 of the ridges 4-4, 4-6 are connected by joints 7 in vertical or horizontal grooves (see Figures 3(d) and (f)). ) and other minor changes are also possible.
なお上記空気入りタイヤの内部構造は、一般的な重荷重
用空気入りラジアルタイヤと同様であって、ここでは図
示を省略した。The internal structure of the pneumatic tire is the same as that of a typical heavy-duty pneumatic radial tire, and is not shown here.
(作 用)
トレッド1の接地域で路面と接触する隆起4の曲げ剛性
が高められて、変形が生じにく《なる。(Function) The bending rigidity of the bump 4 that contacts the road surface in the contact area of the tread 1 is increased, making it difficult for deformation to occur.
このような変形の生じにくい隆起4の、段差表面4aの
タイヤの回転中心からの距離を半径とする円周の長さは
、陸部3の同様な円周の長さに比べて上記の段下がり代
に応じて短いためにタイヤが一回転する間に段差表面は
上記円周差だけスリップを生じることによる摩耗が、絶
えずトレッド1の陸部3の表面摩耗に先行して起こり、
段下がり代は、タイヤの摩耗寿命の間一定に保持される
ことになる。The length of the circumference of the protuberance 4, which does not easily undergo such deformation, has a circumferential length whose radius is the distance from the center of rotation of the tire on the stepped surface 4a, compared to the similar circumferential length of the land portion 3. Since the height is short depending on the amount of drop, the step surface slips by the circumferential difference during one rotation of the tire, which causes wear that constantly precedes the surface wear of the land portion 3 of the tread 1.
The step-down amount will be held constant during the wear life of the tire.
従って隆起4の段差表面4aが保持されたままタイヤが
圧雪路面上に進入したときには、凹凸模様の圧印によっ
て雪面が押し固められることによるせん断抵抗の増強に
よってタイヤの雪上性能が改善される一方、氷結路面上
に進入したときには、突起が接地するためタイヤの接地
面積を増加させたことにより高い制動性を得ることがで
きる。Therefore, when the tire enters the compacted snow road surface while the step surface 4a of the bump 4 is maintained, the snow surface is compacted by the uneven pattern coining, which increases the shear resistance, and improves the tire's on-snow performance. When the tire enters an icy road surface, the protrusions make contact with the ground, so increasing the contact area of the tire can provide high braking performance.
以上に述べたところにおいて、何れの場合も上記細隙5
の傾斜によって、隆起4に面する陸部3のエッジは鋭角
状を呈し、これによって圧雪路面での握持力が強められ
る。In the above description, in any case, the above-mentioned slit 5
Due to the inclination, the edge of the land portion 3 facing the bulge 4 has an acute angle, thereby increasing the gripping force on a snow-packed road surface.
(実施例)
タイヤサイズTBR10.OOR20の供試タイヤを第
1図(a)、第2図に従って用意し、これに対して第4
図(a)に示す一般的なブロックタイプのトレッドパタ
ーンになる従来のタイヤと、第4図(b) (C)に示
すブロックの配列間隔を約20%増しその間に陸部との
段差なしに小突起を配列した比較タイヤとともに雪上路
でのトラクション、氷結路での制動テストを行った。(Example) Tire size TBR10. A test tire of OOR20 was prepared according to Fig. 1(a) and Fig. 2;
The conventional tire has a general block type tread pattern as shown in Figure (a), and the spacing between the blocks shown in Figures 4(b) and (C) has been increased by approximately 20%, so that there is no step between them and the land area. We conducted traction tests on snowy roads and braking on icy roads with a comparison tire with an array of small protrusions.
雪上路では、ロードセルでその駆動力を測定し、氷結路
では−5゜Cの氷上で20km/hの速度から球ブレー
キをかけその制動距離を測定した。On a snowy road, the driving force was measured using a load cell, and on an icy road, a ball brake was applied from a speed of 20 km/h on ice at -5°C, and the braking distance was measured.
その結果を下表に記す。The results are shown in the table below.
表
上表によりこの発明に従うタイヤでは、雪上での駆動性
能及び氷上での制御性能を同時に向上させることが、明
らかである。From the above table, it is clear that the tire according to the present invention improves the driving performance on snow and the control performance on ice at the same time.
なお、上表の適合例で用いた段下がり代を2ffI[I
1としたタイヤと、同じく段下がり代が2mmになる同
様のトレッドパターンを有する第5図に示す如き断面を
持つタイヤについて、舗装路を2万廟走行した時点での
段下がり代を計測した結果、この発明に従うタイヤは初
期の段下がり代を維持できるが、第5図に示すような、
溝部内に単に隆起を直立させた構造のタイヤでは隆起の
段差表面が陸部と同一レベルでありタイヤの彦耗寿命に
至るまで段差を維持できないことが確かめられた。In addition, the step-down distance used in the compliance example in the above table is 2ffI[I
The results of measuring the step down distance after driving on a paved road for 20,000 temples for tires with a cross section as shown in Figure 5, which have a similar tread pattern with a step down distance of 2 mm. , the tire according to the present invention can maintain the initial step-down distance, but as shown in FIG.
It was confirmed that in a tire with a structure in which the bumps are simply placed upright within the groove, the step surface of the bumps is at the same level as the land area, and the step cannot be maintained until the tire's wear life.
(発明の効果)
この発明によれば、タイヤトレッドの摩耗にかかわらず
予め設定した段差を維持してタイヤの摩耗末期に至るま
で安定した走行が実現できる。(Effects of the Invention) According to the present invention, a preset level difference can be maintained regardless of tire tread wear, and stable running can be realized until the end of tire wear.
第1図(a), (b)、第2図は、この発明に従うタ
イヤの構成説明図、
第3図(a), (b). (C), (d), (e
), (f)は、この発明に従うタイヤの他の例を示す
図、
第4図(a), (b), (C)は、第5図は実施例
で用いた従来タイヤのトレッドの要部を示す図である。
1・・・トレッド 2・・・溝部3・・・ブロ
ック 4・・・隆起5・・・細隙
4a・・・段差表面1+,!2z ・・・さしわたし
の長さ株式会社ブリヂスFIGS. 1(a), (b) and 2 are explanatory diagrams of the structure of a tire according to the present invention, and FIGS. 3(a) and (b). (C), (d), (e
), (f) are diagrams showing other examples of the tire according to the present invention; FIGS. 4(a), (b), and (C) are diagrams showing the tread outline of the conventional tire used in the example. FIG. 1... Tread 2... Groove 3... Block 4... Protuberance 5... Slit
4a...Step surface 1+,! 2z ・・・Length of crossing Bridges Co., Ltd.
Claims (1)
部とを配設して凹凸模様を形成した空気入りタイヤにお
いて、 トレッドの円周に沿って互いに隣接する陸 部間の溝部内に、陸部表面に対する段差下り表面をもち
、荷重下において接地する多数の隆起を配設したすべり
止めパターンを備え、上記隆起を陸部に対して区分する
細隙は、 その深さの方向で陸部に向かう傾斜をもち、該隆起の段
差表面におけるトレッドの内周に沿うさしわたしが隆起
の付け根に向けて拡大するものとした、 ことを特徴とする冬期走行用空気入りタイヤ。 2、陸部の隆起に面するエッジが鋭角である請求項1に
記載の空気入りタイヤ。 3、隆起が、トレッドの円周に沿う溝部内を占める延長
部分を有する請求項1又は2に記載の空気入りタイヤ。 4、延長部分が、トレッドの円周に沿って連続する請求
項3に記載の空気入りタイヤ。[Scope of Claims] 1. In a pneumatic tire in which an uneven pattern is formed by disposing grooves and land parts separated by the grooves on the entire surface of the tread, the land parts adjacent to each other along the circumference of the tread In the groove between them, an anti-slip pattern is provided which has a step-down surface with respect to the land surface and has a number of ridges that touch the ground under load, and the gap separating the ridge from the land surface has a depth of A pneumatic pump for winter running, characterized in that the ridge slopes toward the land in the direction of the ridge, and the width along the inner circumference of the tread on the stepped surface of the ridge widens toward the base of the ridge. tire. 2. The pneumatic tire according to claim 1, wherein the edge facing the protuberance of the land portion has an acute angle. 3. The pneumatic tire according to claim 1 or 2, wherein the ridge has an extension portion occupying a groove along the circumference of the tread. 4. The pneumatic tire according to claim 3, wherein the extension portion is continuous along the circumference of the tread.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1114045A JPH02293204A (en) | 1989-05-09 | 1989-05-09 | Pneumatic tire for winter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1114045A JPH02293204A (en) | 1989-05-09 | 1989-05-09 | Pneumatic tire for winter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02293204A true JPH02293204A (en) | 1990-12-04 |
Family
ID=14627651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1114045A Pending JPH02293204A (en) | 1989-05-09 | 1989-05-09 | Pneumatic tire for winter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02293204A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5160385A (en) * | 1989-08-08 | 1992-11-03 | Bridgestone Corporation | Heavy duty pneumatic tires |
US5385189A (en) * | 1991-11-01 | 1995-01-31 | Bridgestone Corporation | Pneumatic tire with paired sides in the tread |
US6102092A (en) * | 1998-06-17 | 2000-08-15 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
KR20020039985A (en) * | 2000-11-23 | 2002-05-30 | 조충환 | Pneumatic tire for reduced noise |
US6467517B1 (en) | 1999-06-15 | 2002-10-22 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
JP2005007919A (en) * | 2003-06-16 | 2005-01-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire for heavy load |
JP2006082586A (en) * | 2004-09-14 | 2006-03-30 | Bridgestone Corp | Pneumatic tire |
JP2007168644A (en) * | 2005-12-22 | 2007-07-05 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2008049751A (en) * | 2006-08-22 | 2008-03-06 | Toyo Tire & Rubber Co Ltd | Pneumatic tire and manufacturing method thereof |
WO2009084666A1 (en) * | 2007-12-28 | 2009-07-09 | Bridgestone Corporation | Tire |
WO2011087134A1 (en) * | 2010-01-18 | 2011-07-21 | 株式会社ブリヂストン | Pneumatic tire |
JP2012532058A (en) * | 2009-06-29 | 2012-12-13 | ミシュラン ルシェルシュ エ テクニーク ソシエテ アノニム | Methods and configurations for improved snow static friction, highway wear, and off-road performance |
JP2013163446A (en) * | 2012-02-10 | 2013-08-22 | Sumitomo Rubber Ind Ltd | Motorcycle tire |
CN104228475A (en) * | 2013-06-10 | 2014-12-24 | 东洋橡胶工业株式会社 | Pneumatic tire |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63106110A (en) * | 1986-10-23 | 1988-05-11 | Bridgestone Corp | Radial tyre for heavy load |
JPS6418706A (en) * | 1987-07-14 | 1989-01-23 | Yokohama Rubber Co Ltd | Snow tire |
-
1989
- 1989-05-09 JP JP1114045A patent/JPH02293204A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63106110A (en) * | 1986-10-23 | 1988-05-11 | Bridgestone Corp | Radial tyre for heavy load |
JPS6418706A (en) * | 1987-07-14 | 1989-01-23 | Yokohama Rubber Co Ltd | Snow tire |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5160385A (en) * | 1989-08-08 | 1992-11-03 | Bridgestone Corporation | Heavy duty pneumatic tires |
US5385189A (en) * | 1991-11-01 | 1995-01-31 | Bridgestone Corporation | Pneumatic tire with paired sides in the tread |
US6102092A (en) * | 1998-06-17 | 2000-08-15 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
US6467517B1 (en) | 1999-06-15 | 2002-10-22 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
KR20020039985A (en) * | 2000-11-23 | 2002-05-30 | 조충환 | Pneumatic tire for reduced noise |
JP2005007919A (en) * | 2003-06-16 | 2005-01-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire for heavy load |
JP2006082586A (en) * | 2004-09-14 | 2006-03-30 | Bridgestone Corp | Pneumatic tire |
JP4692825B2 (en) * | 2005-12-22 | 2011-06-01 | 東洋ゴム工業株式会社 | Pneumatic tire |
JP2007168644A (en) * | 2005-12-22 | 2007-07-05 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
JP2008049751A (en) * | 2006-08-22 | 2008-03-06 | Toyo Tire & Rubber Co Ltd | Pneumatic tire and manufacturing method thereof |
WO2009084666A1 (en) * | 2007-12-28 | 2009-07-09 | Bridgestone Corporation | Tire |
JP2012532058A (en) * | 2009-06-29 | 2012-12-13 | ミシュラン ルシェルシュ エ テクニーク ソシエテ アノニム | Methods and configurations for improved snow static friction, highway wear, and off-road performance |
WO2011087134A1 (en) * | 2010-01-18 | 2011-07-21 | 株式会社ブリヂストン | Pneumatic tire |
JP2011143896A (en) * | 2010-01-18 | 2011-07-28 | Bridgestone Corp | Pneumatic tire |
CN102712222A (en) * | 2010-01-18 | 2012-10-03 | 株式会社普利司通 | Pneumatic tire |
US20130020001A1 (en) * | 2010-01-18 | 2013-01-24 | Kabushiki Kaisha Bridgestone | Pneumatic tire |
US8985169B2 (en) | 2010-01-18 | 2015-03-24 | Bridgestone Corporation | Pneumatic tire having blocks and raised bottom portions in lug grooves |
JP2013163446A (en) * | 2012-02-10 | 2013-08-22 | Sumitomo Rubber Ind Ltd | Motorcycle tire |
CN104228475A (en) * | 2013-06-10 | 2014-12-24 | 东洋橡胶工业株式会社 | Pneumatic tire |
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