JPH08118919A - Pneumatic radial tire - Google Patents

Pneumatic radial tire

Info

Publication number
JPH08118919A
JPH08118919A JP6257236A JP25723694A JPH08118919A JP H08118919 A JPH08118919 A JP H08118919A JP 6257236 A JP6257236 A JP 6257236A JP 25723694 A JP25723694 A JP 25723694A JP H08118919 A JPH08118919 A JP H08118919A
Authority
JP
Japan
Prior art keywords
tread
tire
auxiliary
main
water
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
Application number
JP6257236A
Other languages
Japanese (ja)
Inventor
Shungo Ito
俊吾 井藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP6257236A priority Critical patent/JPH08118919A/en
Publication of JPH08118919A publication Critical patent/JPH08118919A/en
Pending legal-status Critical Current

Links

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
    • B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0339—Grooves
    • B60C2011/0374—Slant grooves, i.e. having an angle of about 5 to 35 degrees to the equatorial plane
    • 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
    • B60C2011/0337—Tread patterns characterised by particular design features of the pattern
    • B60C2011/0386—Continuous ribs
    • B60C2011/0388—Continuous ribs provided at the equatorial plane

Landscapes

  • Tires In General (AREA)

Abstract

PURPOSE: To maintain a wet skid property and reduce the sideway splash of water by forming main grooves dividing a land part and reflection parts extending in the opposite direction to the inclinining direction in auxiliary treads. CONSTITUTION: A tread part 4 consists of a main tread 41 and auxiliary tread 42 and is provided with a main groove 5 inclined from the central part of the tread part 4 at an angle α to the axial direction and extending to the outside in the same direction in the V-shaped form so that a land part 6 is defined. A reflection part 7 extending in the opposite direction to the inclining direction is formed in the auxiliary tread 42 of the main groove 6. Thus, water on a wet rod in traveling is expelled into the auxiliary tread 42 and rearward by the action of the reflection part 7 to restrain water from splashing sidewise of a vehicle without obstructing the field of view of a driver.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ウエット路上を走行し
ているときに生じる側方への水はねを低減した空気入り
ラジアルタイヤに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic radial tire in which lateral water splash caused when running on a wet road is reduced.

【０００２】[0002]

【従来の技術】タイヤの諸性能は、路面を通じて発揮さ
れることにより、路面と直接接するタイヤのトレッドに
よる影響が大きく、そのためトレッドの、特に構造の面
では、ウエット路面上を走行するときの排水性を考慮の
上、種々の方向に延びる溝を用いて種々の形状、および
大きさの陸部が形成されることは広く知られている通り
である。2. Description of the Related Art Since various tire performances are exerted on the road surface, the tire tread that is in direct contact with the road surface has a large influence, and therefore, in terms of the tread, especially in terms of structure, drainage when traveling on a wet road surface is achieved. It is widely known that the land portions having various shapes and sizes are formed by using grooves extending in various directions in consideration of the characteristics.

【０００３】トレッドに用いられる溝について、周方向
溝はともかく、トレッドの両端に開口する、横方向、ま
たは周方向に対し傾斜して延びる溝は、タイヤが路面を
通じて発揮する性能本位で適用されるために、例えば平
面視Ｖ字状、またはＷ字状の溝を用いる場合、トレッド
部の幅全体に亙って配置し、コ−ナリング時において補
助的に接地するトレッド端部に対し、向きが異なる溝を
特別設けるようなことはことはなされていなかった。Regarding the grooves used for the tread, apart from the circumferential grooves, the grooves that are open at both ends of the tread and that extend obliquely with respect to the lateral direction or the circumferential direction are applied at the performance standard that the tire exerts on the road surface. Therefore, for example, when using a V-shaped groove or a W-shaped groove in a plan view, the groove is arranged over the entire width of the tread portion, and the direction of the groove is auxiliary with respect to the tread end portion which assists the ground during cornering. No special provision was made for different grooves.

【０００４】[0004]

【発明が解決しようとする課題】一定の水深を有するウ
エット路上を走行するとき車輪前方の水は、タイヤトレ
ッドの接地面への踏込み時に大部分がタイヤの前方に向
かって排除されるが、トレッドの端部に対応する位置に
存在する水は側方に向かって排除され、通行人に浴びせ
かけるという問題がある。発明者の知見によると上記路
面上の水の排除は、特に排除の方向については、トレッ
ド部に適用される溝との関係が深いことが分かった。本
発明は、ウエットスキッド性を維持し、側方への水はね
を低減した空気入りタイヤを提供することを目的とす
る。When traveling on a wet road having a constant water depth, most of the water in front of the wheels is removed toward the front of the tire when the tire tread is stepped on the ground contact surface. There is a problem that the water existing at the position corresponding to the edge of the water is discharged to the side and is poured on a passerby. According to the inventor's knowledge, it has been found that the removal of water on the road surface has a deep relationship with the groove applied to the tread portion, particularly in the removal direction. An object of the present invention is to provide a pneumatic tire that maintains wet skid properties and reduces lateral water splash.

【０００５】[0005]

【課題を解決するための手段】本発明は、一対の環状サ
イドウォ−ル間にクラウン部が連なり、上記サイドウォ
−ルの一方からクラウン部を通り他方サイドウォ−ルに
至る間をラジアルカ−カスにより、またこのカ−カスの
クラウン部外周に非伸長性ベルト層、およびトレッド部
を配置して補強し、上記トレッド部は円筒状の主トレッ
ドと、その両側に丸みをもって続く補助トレッドより成
ると共に、トレッド部の中央部分から軸方向に対して傾
斜し、同方向外側に向かってＶ字状に延びる多数の主溝
と、これらの主溝によって区分した陸部を有するタイヤ
において、上記主溝は、補助トレッド内に上記傾斜方向
とは逆方向に延びる反転部を形成していることを特徴と
する空気入りラジアルタイヤである。ここで主トレッド
とは、タイヤが直進時に接地するトレッド部の領域を云
い、便宜上ETRTO 規格に基づきタイヤを正規リムに組
み、正規内圧を充填して、平板上に設計最大荷重の７０
% を加えたとき接地する領域とする。According to the present invention, a crown portion is connected between a pair of annular side walls, and a radial arc is provided between one of the side walls and the other side wall through the crown portion. Further, a non-stretchable belt layer and a tread portion are arranged on the outer periphery of the crown portion of this carcass to reinforce, and the tread portion is composed of a cylindrical main tread and auxiliary treads which are rounded on both sides thereof, and the tread is provided. In a tire having a plurality of main grooves that are inclined with respect to the axial direction from the central portion of the portion and extend outward in the same direction in a V shape, and a land portion that is divided by these main grooves, the main groove is an auxiliary The pneumatic radial tire is characterized in that a reversal portion extending in a direction opposite to the inclination direction is formed in the tread. Here, the main tread is the area of the tread where the tire touches the ground when going straight. For convenience, the tire is assembled on the regular rim based on the ETRTO standard, the regular internal pressure is filled, and the maximum design load of 70 on the flat plate.
The area to be grounded when% is added.

【０００６】[0006]

【作用】発明者が種々実験を繰り返し検討したところに
よると、走行時において路上の水の、排除によって放出
されるされる方向は、トレッド部に適用される溝の配置
方向と関係が深いことが分かった。例えばトレッド部に
周方向溝を軸方向に所定間隔を置いて設け、またこれら
の溝と直行する方向に多数のラグ溝を、両トレッド部端
に亙って設けることによって陸部を区分したトレッド部
を有するタイヤの場合は、トレッド部の補助トレッドを
含む両端部を除き、大部分の水は周方向溝に沿う前方に
排除され、両端部の水は、ラグ溝の向き、即ち軸方向に
向かって排除されるのである。According to repeated examinations of various experiments by the inventor, it is found that the direction in which water on the road is discharged during the running is closely related to the arrangement direction of the grooves applied to the tread portion. Do you get it. For example, a tread that divides the land portion by providing circumferential grooves at predetermined intervals in the tread portion in the axial direction, and providing a large number of lug grooves in a direction orthogonal to these grooves over the ends of both tread portions. In the case of a tire having a section, most of the water is excluded forward along the circumferential groove, except for both ends including the auxiliary tread of the tread portion, and the water at both ends is oriented in the lug groove, that is, in the axial direction. It will be eliminated toward you.

【０００７】本発明に成るタイヤは、トレッド部が円筒
状の主トレッドと、その両側に丸みを持って続く補助ト
レッドより成ると共に、トレッド部の中央部分から軸方
向に対して傾斜し、同方向外側に向かってＶ字状に延び
る多数の主溝と、これらの主溝によって区分された陸部
を有するタイヤであって、上記主溝は、補助トレッド内
に上記傾斜方向とは逆方向に延びる反転部を形成してい
ることを構造上の特徴とする。そしてこの種のトレッド
部を備えたタイヤは、Ｖ字状の溝、または陸部の、トレ
ッド中央において収斂する側が両端部の拡開する側に先
んじて接地するよう、タイヤの回転方向が特定されてい
る。そのため、走行時においてウエット路上の水を、ト
レッド端部に位置する補助トレッド内に、陸部相互間に
形成されたＶ字状の向きとは逆向きに延びる溝の反転部
の作用によって、反転部の方向、即ち後方に向かって排
除するのである。従って、車両の側方への水はねは極力
抑制されるのである。なおＶ字状主溝を配置した区域の
水は、溝の向きに沿って前方に扇状に排除される。その
ため、排除した水をボンネット越しにかぶり、運転者の
視界を遮ることはない。The tire according to the present invention comprises a main tread having a cylindrical tread portion and auxiliary treads which are rounded on both sides of the main tread portion. The tread portion is inclined from the central portion of the tread portion with respect to the axial direction. A tire having a plurality of main grooves extending outward in a V-shape and a land portion sectioned by the main grooves, wherein the main grooves extend in an auxiliary tread in a direction opposite to the inclination direction. The structural feature is that the inverted portion is formed. In a tire provided with this kind of tread portion, the direction of rotation of the tire is specified so that the side of the V-shaped groove or land portion that converges at the center of the tread comes into contact with the ground before the side where both ends expand. ing. Therefore, when running, water on the wet road is reversed in the auxiliary tread located at the tread end by the action of the reversal portion of the groove extending in the direction opposite to the V-shaped direction formed between the land portions. It is excluded in the direction of the part, that is, backward. Therefore, water splash to the side of the vehicle is suppressed as much as possible. Water in the area where the V-shaped main groove is arranged is removed in a fan shape forward along the direction of the groove. For this reason, the removed water is covered over the bonnet without blocking the driver's view.

【０００８】[0008]

【実施例】以下図面に基づき説明する。図１は本発明に
おける一実施例を示すタイヤの断面輪郭図、図２は同タ
イヤのトレッド部平面展開図である。本発明においてタ
イヤ1 は、一対の環状サイドウォ−ル2 と、両サイドウ
ォ−ル2 間に跨がってクラウン部3 が連なり、図示を省
略しているがサイドウォ−ルの一方2 からクラウン部3
を通り、他方サイドウォ−ル2 に至る間をラジアルカ−
カスで補強し、このカ−カスのクラウン部外周に非伸長
性ベルト層（図示せず）、およびトレッド部4 を配置し
て強化している。ラジアルカ−カスは、ポリエステル、
レ−ヨンで代表される繊維コ−ドを赤道面O と実質上直
交する方向に配列したプライの少なくとも１枚、通常２
枚から成る公知の構造であり、またベルト層も、スチ−
ルコ−ドなどの非伸長性コ−ドを赤道面O に対し浅い角
度（１５〜３５°）で傾斜配列したプライの複数枚、通
常２枚を、それらのコ−ドが交差するように重ね合わ
せ、更にその周囲全体にナイロンなどの熱収縮性コ−ド
を複数本並べてゴム引きしたストリップの周方向螺旋巻
きによって形成した、キャップ層を含む公知の構造であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings. FIG. 1 is a sectional outline view of a tire showing an embodiment of the present invention, and FIG. 2 is a plan development view of a tread portion of the tire. In the present invention, the tire 1 includes a pair of annular side walls 2 and a crown portion 3 extending from both side walls 2 and extending from one side wall 1 to the crown portion 3 though not shown.
Through the other side and reach the side wall 2
The carcass is reinforced and a non-stretchable belt layer (not shown) and a tread part 4 are arranged on the outer periphery of the crown part of the carcass for reinforcement. Radial arcus is polyester,
At least one ply in which fiber cords represented by rayon are arranged in a direction substantially orthogonal to the equatorial plane O, usually 2
It is a known structure composed of one sheet, and the belt layer is
A plurality of plies, usually two, in which non-stretchable cords such as rucodes are inclined at a shallow angle (15 to 35 °) with respect to the equatorial plane O are stacked so that the cords intersect each other. It is a known structure including a cap layer, which is formed by circumferentially spirally winding a plurality of heat-shrinkable cords such as nylon arranged side by side and rubberized on the entire periphery thereof.

【０００９】トレッド部4 は、円筒状の主トレッド4
1と、その両側に丸みをもって続く補助トレッド42より
成ると共に、トレッド部4 の中央部分から軸方向に対し
αの角度で傾斜し、同方向外側に向かってＶ字状に延び
る多数の主溝5 と、これらの主溝によって区分された陸
部6 を有する。そして主溝5 は、補助トレッド42内に上
記傾斜方向とは逆方向に延びる反転部7 を形成してい
る。なお図１において、赤道面O より右半分は一部省略
しているが、左右は実質上対称である。また符号S とH
は夫々タイヤ幅、および断面高さであり、本発明は両者
の比H ／S が０．３〜０．６と扁平な乗用車用ラジアル
タイヤに対し好適に適用することができる。The tread portion 4 is a cylindrical main tread 4
1 and an auxiliary tread 4 2 which is rounded on both sides of the tread 4 and has a large number of main grooves which are inclined from the central portion of the tread portion 4 at an angle α with respect to the axial direction and which extend outward in the same direction in a V shape. It has 5 and a land part 6 divided by these main grooves. The main groove 5, the above inclined direction in the auxiliary tread 4 in 2 forms a reverse portion 7 extending in the opposite direction. In FIG. 1, the right half of the equatorial plane O is partially omitted, but the left and right sides are substantially symmetrical. Also the symbols S and H
Is the tire width and the sectional height, respectively, and the present invention can be preferably applied to a flat radial tire for passenger cars having a ratio H / S of 0.3 to 0.6.

【００１０】図２に示す実施例において、主溝5 の角度
α（６０°）で延びる部分は幅v が広く、主トレッド端
F に近接した位置8 より漸次幅w に絞り、且つ軸方向に
向きを変えて補助トレッド42内へ延びている。そして更
に、補助トレッド内の位置9より逆方向の角度β（−８
０°）をもって延びる反転部7 を形成している。角度
α、は、タイヤサイズ、およびトレッド部に施されるピ
ッチ配列などの都合によって１５〜５５°の範囲で適用
することができ、角度βは本発明に照らし−４５〜−８
５°の範囲が好ましい。そして反転部の基点としての位
置9 の主トレッド部からの軸方向距離x は１０〜３０mm
が好ましい。しかしながら、主溝5 の位置8 から位置9
までの間の、軸方向とほぼ平行に延びる部分は省略し、
幅v を維持しつつ位置9 よりトレッド部の側端に至る間
に反転部9 を設けることができる。図１において符号j
は、主溝5 の底のレベルを連ねた仮想線である。In the embodiment shown in FIG. 2, the portion of the main groove 5 extending at the angle α (60 °) has a wide width v,
Gradually aperture width w than the position 8 close to the F, and extends into the auxiliary tread 4 in 2 and changing the direction in the axial direction. Further, the angle β (−8
The inverted portion 7 extending at 0 ° is formed. The angle α can be applied in the range of 15 to 55 ° depending on the tire size and the pitch arrangement applied to the tread portion, and the angle β is in the range of −45 to −8 according to the present invention.
A range of 5 ° is preferred. And the axial distance x from the main tread at position 9 as the base point of the reversing part is 10 to 30 mm.
Is preferred. However, positions 8 to 9 of main groove 5
Between the up to, omitting the portion that extends substantially parallel to the axial direction,
The reversal portion 9 can be provided between the position 9 and the side end of the tread portion while maintaining the width v. Symbol j in FIG.
Is an imaginary line connecting the levels of the bottom of the main groove 5.

【００１１】この実施例において陸部6 はサイプ10、と
細溝11によって複数（５個）のブロック12に分割し、ま
た軸方向最外側のブロックにその部分の主溝5 の流れに
沿ってラグ溝13を設け、複数の部分14、14を区分してい
る。ラグ溝13も主溝5 と同様補助トレッド内のほぼ同じ
区域に反転部7'を形成している。In this embodiment, the land portion 6 is divided into a plurality (five) of blocks 12 by a sipe 10 and a narrow groove 11, and the axially outermost block is divided along the flow of the main groove 5 of that portion. A lug groove 13 is provided to divide the plurality of parts 14, 14. Similarly to the main groove 5, the lug groove 13 also has an inversion portion 7'formed in substantially the same area in the auxiliary tread.

【００１２】[0012]

【効果】本発明に成るタイヤの効果を確かめるべく225/
50ZR16サイズの乗用車用ラジアル構造タイヤを使用し、
図１、および２に示す実施例のタイヤに比較例を交え、
ウエットスキッドおよび水はねテストを行い評価した。
実施例のタイヤは、主トレッド内の主溝の角度αを６０
°（但し、中間ピッチ内の溝角度）、補助トレッドにお
ける主溝の傾斜角βを−８０°とした。一方比較例のタ
イヤは、主溝の補助トレッド域に延びる部分を軸方向と
平行にトレッド端E まで延長し、それ以外は実施例のタ
イヤと同一の構造並びに形状とした。[Effect] To confirm the effect of the tire according to the present invention, 225 /
Using radial structure tires for passenger cars of 50ZR16 size,
A comparative example is added to the tires of the examples shown in FIGS. 1 and 2,
Wet skid and water splash tests were performed and evaluated.
The tire of the example has an angle α of the main groove in the main tread of 60.
(However, the groove angle in the intermediate pitch) and the inclination angle β of the main groove in the auxiliary tread were set to −80 °. On the other hand, the tire of the comparative example has the same structure and shape as the tire of the example except that the portion of the main groove extending in the auxiliary tread region is extended to the tread end E in parallel with the axial direction.

【００１３】テスト条件として、タイヤを16×8Jリムに
組み、２．５Kgf/Cm2 の内圧を充填した。ウエットスキ
ッドテストは、アスファルト舗装周回路の散水した直線
部にパイロンを１０個３０m 間隔に立ててスラロ−ムコ
−スを設定し、実車による通過速度を測定した。その結
果、比較例のタイヤは６６．２Km/Hであったのに対し、
実施例のタイヤは６７．１Km/Hであった。水はねテスト
はコ−ス内に深さ１０mmの水溜まりを設け、実車にて６
０Km/Hの速度で通過し、その際生じる水はねのタイヤよ
りの軸方向距離を測定した。その結果、比較例のタイヤ
が５．２５m であったのに対し、実施例のタイヤは５．
０８m であった。As test conditions, the tire was mounted on a 16 × 8J rim and filled with an internal pressure of 2.5 Kgf / Cm 2 . In the wet skid test, 10 pylons were set up at intervals of 30 m on a straight line portion of the asphalt paving circuit, and a slalom course was set, and the passing speed by an actual vehicle was measured. As a result, while the tire of the comparative example was 66.2 Km / H,
The tire of the example was 67.1 Km / H. For the water splash test, a water pool with a depth of 10 mm was provided in the course, and 6
Passage was carried out at a speed of 0 Km / H, and the axial distance from the tire of the water splash generated at that time was measured. As a result, the tire of Comparative Example was 5.25 m, while the tire of Example was 5.25 m.
It was 08 m.

【図面の簡単な説明】[Brief description of drawings]

【図１】実施例のタイヤ断面輪郭図。FIG. 1 is a sectional profile view of a tire according to an embodiment.

【図２】実施例のトレッド部平面展開図。FIG. 2 is a plan development view of a tread portion of an example.

【符号の説明】[Explanation of symbols]

1 タイヤ 2 サイドウォ−ル 3 クラウン部 4 トレッド部 41 主トレッド 42 補助トレッド 5 主溝 6 陸部 7 反転部1 Tire 2 Sidewall 3 Crown part 4 Tread part 4 1 Main tread 4 2 Auxiliary tread 5 Main groove 6 Land part 7 Inversion part

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 一対の環状サイドウォ−ル間にクラウン
部が連なり、上記サイドウォ−ルの一方からクラウン部
を通り他方サイドウォ−ルに至る間をラジアルカ−カス
により、またこのカ−カスのクラウン部外周に非伸長性
ベルト層、およびトレッド部を配置して補強し、上記ト
レッド部は円筒状の主トレッドと、その両側に丸みをも
って続く補助トレッドより成ると共に、トレッド部の中
央部分から軸方向に対して傾斜し、同方向外側に向かっ
てＶ字状に延びる多数の主溝と、これらの主溝によって
区分した陸部を有するタイヤにおいて、上記主溝は、補
助トレッド内に上記傾斜方向とは逆方向に延びる反転部
を形成していることを特徴とする空気入りラジアルタイ
ヤ。1. A crown portion is continuous between a pair of annular side walls, and a radial arc is provided between one of the side walls and the other side wall, and the crown portion of the carcass. A non-stretchable belt layer and a tread portion are arranged on the outer periphery to reinforce the tread portion, and the tread portion is composed of a cylindrical main tread and auxiliary treads that are rounded on both sides of the tread portion, and axially from the central portion of the tread portion. In a tire having a large number of main grooves that are inclined with respect to each other and extend in a V shape toward the outside in the same direction, and a land portion that is divided by these main grooves, the main groove is different from the inclination direction in the auxiliary tread. A pneumatic radial tire having an inverted portion extending in the opposite direction.
JP6257236A 1994-10-24 1994-10-24 Pneumatic radial tire Pending JPH08118919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6257236A JPH08118919A (en) 1994-10-24 1994-10-24 Pneumatic radial tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6257236A JPH08118919A (en) 1994-10-24 1994-10-24 Pneumatic radial tire

Publications (1)

Publication Number Publication Date
JPH08118919A true JPH08118919A (en) 1996-05-14

Family

ID=17303581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6257236A Pending JPH08118919A (en) 1994-10-24 1994-10-24 Pneumatic radial tire

Country Status (1)

Country Link
JP (1) JPH08118919A (en)

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