JP2805472B2 - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JP2805472B2 JP2805472B2 JP61305494A JP30549486A JP2805472B2 JP 2805472 B2 JP2805472 B2 JP 2805472B2 JP 61305494 A JP61305494 A JP 61305494A JP 30549486 A JP30549486 A JP 30549486A JP 2805472 B2 JP2805472 B2 JP 2805472B2
- Authority
- JP
- Japan
- Prior art keywords
- tire
- row
- land
- vehicle
- pitch number
- 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.)
- Expired - Fee Related
Links
- 239000011295 pitch Substances 0.000 claims description 56
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000005096 rolling process Methods 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
- B60C11/0318—Tread patterns irregular patterns with particular pitch sequence
-
- 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
- B60C11/0304—Asymmetric patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、騒音発生を低減させた空気入りタイヤに関
する。
〔従来技術〕
従来、空気入りタイヤの騒音低減の手法としては、タ
イヤ周上に配列された多数のブロックのピッチをバリア
ブルに変化させ、その一定数を繰り返し単位としてタイ
ヤ周上に配列させることにより、発生する騒音の分散を
図ることが一般的になっている。
しかし、このような従来の空気入りタイヤでは、各列
毎のピッチ配列等が基本的には同一であるため、転動中
に発生するパターン騒音が各列とも同一周波数帯に集中
するので、騒音のピーク値（音圧レベル）が重なって大
きくなってしまうという問題があった。このため、従来
の手法では、騒音の低減には限界があった。
また、操縦安定性をよくするにはリブ列又はブロック
列の剛性を高めればよく、このためにはピッチ数（ブロ
ック数）を少なくすればよいが、これは騒音の増加につ
ながってしまう。
〔発明の目的〕
本発明は、このような事情にかんがみなされたもの
で、操縦安定性を低下させることなしに騒音を低減させ
た空気入りタイヤを提供することを目的とする。
〔発明の構成〕
上記目的を達成する本発明は、トレッド面にタイヤ周
方向に延びる複数の主溝を設け、該主溝によりタイヤ幅
方向に複数の陸部列を区画形成し、それら陸部列にタイ
ヤ幅方向に延びる副溝をタイヤ周方向に沿って所定のピ
ッチで配置した空気入りタイヤにおいて、前記副溝によ
り区分したピッチ数を各陸部列で相違させると共に、車
両装着時に車両内側となるタイヤ車両装着内側から車両
外側に向けて前記陸部列のピッチ数を次第に小さくし、
タイヤ車両装着最外側の陸部列のピッチ数を最少ピッチ
数にすると共に、残りの陸部列を最少ピッチ数よりも２
ピッチ以上多くかつ最少ピッチ数の２倍未満にし、左右
の最外側の主溝よりタイヤ外側のタイヤ車両装着最内側
陸部列及び最外側陸部列の幅を、該最外側の主溝間に配
置した陸部列より幅広に形成したことを特徴とするもの
である。
以下、図を参照して本発明の構成につき詳しく説明す
る。
第１図は、本発明の空気入りタイヤのトレッド表面に
形成されたトレッドパターンの一例を示す説明図であ
る。トレッド面１にタイヤ周方向に延びる複数の主溝４
を設け、これら主溝４によりタイヤ幅方向に複数の陸部
列A,B,C,Dが区画形成されている。この陸部列A,B,C,Dに
は、タイヤ幅方向に延びる副溝５が複数個タイヤ周方向
に沿って所定のピッチで配置され、ブロック列を形成す
るようになっている。2a,2b,2c,2dは、それぞれのブロ
ック列に形成されたブロックである。ｍは、トレッド面
１におけるタイヤ中心線である。
これらのブロック列A,B,C,Dは、それぞれ副溝５を設
ける数を異ならせ、副溝５により区分したピッチ数を各
ブロック列で相違するようにしている。ブロック列A,B,
C,Dにおけるピッチ数の関係は、最少ピッチ数にしたブ
ロック列に対し、残りのブロック列は最少ピッチ数より
も２ピッチ以上多くかつ最少ピッチ数の２倍未満になっ
ている。２以上２倍未満としたのは、２未満では各列の
ピッチ数が実質的に同一となり、ピッチ数を各列毎に相
違させた意味がなくなるからである。一方、２倍以上で
は、ピッチが小さくなりすぎてピッチのバリアブル変
化をあまり大きくできなくなるため、騒音の周波数分散
が不可能となり、また、ブロック間の剛性の差が大き
くなりすぎて運転性能に悪影響を及ぼすおそれがあるか
らである。
また、後述する表１に示すように、車両装着時に車両
内側となるタイヤ車両装着内側のブロック列Ａから車両
外側のブロック列Ｄに向けてそのピッチ数が次第に小さ
なり、タイヤ車両装着最外側のブロック列Ｄのピッチ数
を最少ピッチ数にしている。更に、左右の最外側の主溝
４よりタイヤ外側のタイヤ車両装着最内側のブロック列
Ａ及び最外側のブロック列Ｄの幅は、最外側の主溝４間
に配置したブロック列B,Cより幅広に形成されている。
この結果、トレッドパターンは必然的に非対称デザイン
となる。そして、このように配置したために、タイヤ車
両装着外側の剛性が低下しないので、車両の運転性能、
特に操縦安定性を低下させることがない。なお、各列の
ピッチ配列は、それぞれランダムであることが好まし
い。
これに対し、第３図に示される従来の空気入りタイヤ
のトレッドパターンでは、ブロック列a,b,c,dにおける
ピッチ数が同一であるために、タイヤの回転によって生
じるパターン騒音のうち極大値が同一時期に集中し、音
圧レベルを上げる結果となる。第１図に示される本発明
の場合には、ブロック列A,B,C,Dでピッチ数が各列毎に
異なっているため、タイヤ回転時に発生する騒音パター
ンの極大値は分散され、同一時期に集中することがない
ので音圧レベルが低下し、いっそうの騒音低減を図るこ
とができる。このことは、第１図の本発明タイヤと第３
図の従来タイヤについてピッチ数および騒音性能を比較
した下記表１からも理解できる。
第２図は、本発明の空気入りタイヤのトレッド表面に
形成されたトレッドパターンの他例を示す説明図であ
る。第２図では、第１図におけるブロック列の代わりに
リブ列A,B,C,Dが配されている。そして、各リブ列に
は、タイヤ幅方向に延びる複数の切り込み溝（副溝）３
がラグ溝としてタイヤ周方向に沿って形成されている。
が設けられている。ここで、ピッチとは切り込み溝3,3
間の周方向長さである（例えば、Ａ列ではｌ）。
また、第４図は、第３図に対応する従来の空気入りタ
イヤのトレッドパターンを示したものであり、第３図に
おけるブロック列の代わりにリブ列a,b,c,dが配されて
いる。
つぎに、第１図の本発明タイヤと第３図の従来タイヤ
とについて、速度と音圧レベルとの関係を第５図に示
す。第５図中、αは本発明タイヤを、βは従来タイヤを
それぞれ表わす。
第５図から、本発明タイヤは音圧レベルが極めて低減
していることが判る。
〔発明の効果〕
上述したように本発明は、トレッド面にタイヤ周方向
に延びる複数の主溝を設け、該主溝によりタイヤ幅方向
に複数の陸部列を区画形成し、それら陸部列にタイヤ幅
方向に延びる副溝をタイヤ周方向に沿って所定のピッチ
で配置した空気入りタイヤにおいて、前記副溝により区
分したピッチ数を各陸部列で相違させると共に、車両装
着時に車両内側となるタイヤ車両装着内側から車両外側
に向けて前記陸部列のピッチ数を次第に小さくし、タイ
ヤ車両装着最外側の陸部列のピッチ数を最少ピッチ数に
すると共に、残りの陸部列を最少ピッチ数よりも２ピッ
チ以上多くかつ最少ピッチ数の２倍未満にし、左右の最
外側の主溝よりタイヤ外側のタイヤ車両装着最内側陸部
列及び最外側陸部列の幅を、該最外側の主溝間に配置し
た陸部列より幅広に形成したので、以下のような優れた
効果を奏するものである。
即ち、副溝により区分したピッチ数を各陸部列で相違
させると共に、最少ピッチ数にした陸部列に対し、残り
のブロック列を最少ピッチ数よりも２ピッチ以上多くか
つ最少ピッチ数の２倍未満とすることにより、各陸部列
により発生する騒音が同一周波数帯に集中するのを効果
的に回避することができるため、騒音の低減が可能にな
る。
また、タイヤ車両装着最外側の陸部列の幅を最外側の
主溝間に配置した陸部列より幅広にし、かつその幅広の
陸部列のピッチ数を最少ピッチ数にしたので、トレッド
面のタイヤ車両装着外側領域における剛性を十分に確保
することができ、それによって、車両運転性能、特に操
縦安定性を低下させることがない。
また、最外側の主溝間に配置した陸部列の幅が、最外
側の主溝よりタイヤ外側の両陸部列よりも狭いため、主
溝をトレッド中央側に有効に配置する構成とすることが
でき、その結果、それら主溝により良好な排水効果の確
保を可能にする。
しかも、タイヤ車両装着内側から外側に向けて陸部列
のピッチ数を次第に小さく変えることにより、外側の陸
部列程、剛性を大きくしてグリップ力を強める（装着時
に車両内側に向けてグリップ力が作用）ことができるた
め、旋回走行時における旋回外側のタイヤのコーナリン
グフォースを増大させ、それによって旋回時の応答性を
高めて操縦性を向上することができる。
また、一般に空気入りタイヤは、タイヤ車両装着外側
の陸部列程摩耗し易いが、本発明では、タイヤ車両装着
内側から外側に向けて陸部列のピッチ数を次第に小さく
することにより、外側の陸部列程剛性を高くして摩耗が
小さくなるようにしているので、トレッド面における陸
部列をタイヤ車両装着外側と内側で均一的に摩耗させる
ことができる。Description: TECHNICAL FIELD The present invention relates to a pneumatic tire with reduced noise generation. [Prior art] Conventionally, as a method of reducing noise of a pneumatic tire, the pitch of a large number of blocks arranged on the tire circumference is changed in a variable manner, and a certain number thereof is arranged on the tire circumference as a repeating unit. In general, it is common to disperse generated noise. However, in such a conventional pneumatic tire, since the pitch arrangement and the like in each row are basically the same, the pattern noise generated during rolling is concentrated in the same frequency band in each row. There is a problem that the peak value (sound pressure level) of the data overlaps and increases. For this reason, the conventional method has a limit in noise reduction. To improve the steering stability, the rigidity of the rib row or the block row may be increased, and for this purpose, the number of pitches (the number of blocks) may be reduced, but this leads to an increase in noise. [Object of the Invention] The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pneumatic tire with reduced noise without lowering steering stability. [Constitution of the Invention] The present invention that achieves the above object is to provide a plurality of main grooves extending in the tire circumferential direction on a tread surface and to form a plurality of land rows in the tire width direction by the main grooves. In a pneumatic tire in which sub-grooves extending in the tire width direction are arranged at predetermined pitches along the tire circumferential direction in a row, the number of pitches divided by the sub-grooves is made different in each land row, and the inside of the vehicle when the vehicle is mounted. The pitch number of the land portion row is gradually reduced from the tire vehicle mounting inside to the vehicle outside, and
The pitch number of the outermost land row on which the tire vehicle is mounted is set to the minimum pitch number, and the remaining land row is set to be smaller than the minimum pitch number by two.
Make the width of the innermost land portion row and the outermost land portion row mounted on the tire vehicle outside the left and right outermost main grooves larger than the pitch and less than twice the minimum number of pitches between the outermost main grooves. It is characterized in that it is formed wider than the land rows arranged. Hereinafter, the configuration of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing an example of a tread pattern formed on a tread surface of a pneumatic tire of the present invention. A plurality of main grooves 4 extending in the tire circumferential direction on the tread surface 1
A plurality of land rows A, B, C, D are defined in the tire width direction by the main grooves 4. A plurality of sub-grooves 5 extending in the tire width direction are arranged at predetermined pitches along the tire circumferential direction in the land portion rows A, B, C, D to form a block row. 2a, 2b, 2c, 2d are blocks formed in each block row. m is a tire center line on the tread surface 1. These block rows A, B, C, and D are provided with different numbers of the sub-grooves 5 so that the pitch numbers divided by the sub-grooves 5 are different in each block row. Block rows A, B,
The relationship between the pitch numbers in C and D is such that the remaining block rows are at least two pitches more than the minimum pitch number and less than twice the minimum pitch number with respect to the block row having the minimum pitch number. The reason why the number of pitches is set to 2 or more and less than 2 times is that if the number is less than 2, the pitch number of each row becomes substantially the same, and there is no meaning in making the pitch number different for each row. On the other hand, if it is more than twice, the pitch becomes too small and the variable change of the pitch cannot be made so large, so that the frequency dispersion of the noise becomes impossible, and the difference in rigidity between the blocks becomes too large to adversely affect the driving performance. This is because the Further, as shown in Table 1 described later, the pitch number gradually decreases from the block row A on the tire mounting side, which is the vehicle inner side when the vehicle is mounted, to the block row D on the vehicle outer side. The pitch number of the block row D is set to the minimum pitch number. Furthermore, the width of the innermost block row A and the outermost block row D mounted on the tire vehicle outside the left and right outermost main grooves 4 is greater than the width of the block rows B and C arranged between the outermost main grooves 4. It is formed wide.
As a result, the tread pattern necessarily has an asymmetric design. And since it is arranged in this manner, the rigidity outside the tire vehicle mounting does not decrease, so that the driving performance of the vehicle,
In particular, the steering stability is not reduced. Preferably, the pitch arrangement of each row is random. On the other hand, in the tread pattern of the conventional pneumatic tire shown in FIG. 3, since the pitch numbers in the block rows a, b, c, and d are the same, the maximum value of the pattern noise generated by the rotation of the tire is maximized. Concentrate at the same time, resulting in an increase in sound pressure level. In the case of the present invention shown in FIG. 1, since the pitch numbers of the block rows A, B, C, and D are different for each row, the maximum value of the noise pattern generated when the tire rotates is dispersed and the same. Since there is no need to concentrate on the timing, the sound pressure level is reduced, and the noise can be further reduced. This is because the tire of the present invention shown in FIG.
It can also be understood from Table 1 below which compares the pitch number and noise performance of the conventional tire shown in the figure. FIG. 2 is an explanatory view showing another example of the tread pattern formed on the tread surface of the pneumatic tire of the present invention. In FIG. 2, rib rows A, B, C, and D are arranged instead of the block rows in FIG. Each rib row has a plurality of cut grooves (sub-grooves) 3 extending in the tire width direction.
Are formed along the tire circumferential direction as lug grooves.
Is provided. Here, the pitch refers to the cut groove 3,3
(For example, 1 in row A). FIG. 4 shows a tread pattern of a conventional pneumatic tire corresponding to FIG. 3, and rib rows a, b, c, and d are arranged instead of the block rows in FIG. I have. Next, FIG. 5 shows the relationship between speed and sound pressure level for the tire of the present invention shown in FIG. 1 and the conventional tire shown in FIG. In FIG. 5, α represents the tire of the present invention, and β represents the conventional tire. From FIG. 5, it can be seen that the tire of the present invention has a very low sound pressure level. [Effect of the Invention] As described above, the present invention provides a plurality of main grooves extending in the tire circumferential direction on the tread surface, and defines a plurality of land rows in the tire width direction by the main grooves. In a pneumatic tire in which sub-grooves extending in the tire width direction are arranged at a predetermined pitch along the tire circumferential direction, the number of pitches divided by the sub-grooves is made different for each land portion row, and when the vehicle is mounted on the inside of the vehicle. The pitch number of the land portion row is gradually reduced from the inside of the tire vehicle to the outside of the vehicle, the pitch number of the land portion row on the outer side of the tire vehicle is set to the minimum pitch number, and the remaining land row is minimized. The width of the innermost land portion row and the outermost land portion row mounted on the tire vehicle outside the tires from the left and right outermost main grooves are set to be two or more pitches larger than the pitch number and less than twice the minimum pitch number. Land located between the main ditch Since it is formed wider than the rows, the following excellent effects can be obtained. That is, the number of pitches divided by the sub-grooves is made different in each land row, and the remaining block row is more than the minimum pitch number by two pitches and the minimum pitch number is 2 with respect to the land row row having the minimum pitch number. By setting the ratio to less than twice, it is possible to effectively prevent noise generated by each land row from being concentrated in the same frequency band, so that noise can be reduced. In addition, the width of the outermost land row on which the tire vehicle is mounted is wider than the width of the land row arranged between the outermost main grooves, and the pitch number of the wider land row is made the minimum pitch number, so the tread surface The rigidity of the tire outside the vehicle mounting region can be sufficiently ensured, so that the vehicle driving performance, especially the steering stability, does not decrease. Further, since the width of the land portion row arranged between the outermost main grooves is smaller than the outermost main groove and both land portion rows outside the tire, the main grooves are effectively arranged on the tread center side. As a result, it is possible to ensure a good drainage effect by the main grooves. Moreover, by gradually decreasing the number of pitches of the land portion rows from the inside to the outside of the tire vehicle, the rigidity is increased and the grip force is increased toward the outside land portion rows (gripping force toward the inside of the vehicle when mounted) Therefore, the cornering force of the tire on the outer side of the turn during turning can be increased, whereby the responsiveness at the time of turning can be increased and the maneuverability can be improved. Further, in general, a pneumatic tire is more likely to be worn as the land portion row on the outer side of the tire vehicle is mounted, but in the present invention, the pitch number of the land portion row is gradually reduced from the inner side to the outer side of the tire vehicle, so that the outer side becomes smaller. Since the rigidity is increased and the wear is reduced as the land portion row is increased, the land portion row on the tread surface can be evenly worn on the outside and inside of the tire vehicle.
【図面の簡単な説明】
第１図および第２図はそれぞれ本発明の空気入りタイヤ
のトレッド表面に形成されたトレッドパターンの一例を
示す説明図、第３図および第４図はそれぞれ従来の空気
入りタイヤのトレッド表面に形成されたトレッドパター
ンの一例を示す説明図、第５図はタイヤの速度と音圧レ
ベルとの関係図である。
１……トレッド面、３……切り込み溝（副溝）、４……
主溝、５……副溝、A,B,C,D……陸部列BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are explanatory diagrams each showing an example of a tread pattern formed on a tread surface of a pneumatic tire according to the present invention, and FIGS. 3 and 4 are conventional pneumatic tires, respectively. FIG. 5 is an explanatory diagram showing an example of a tread pattern formed on a tread surface of a tire including a tire, and FIG. 5 is a diagram showing a relationship between a tire speed and a sound pressure level. 1... Tread surface, 3... Cut groove (sub-groove), 4.
Main groove, 5 ... Sub groove, A, B, C, D ... Land row
フロントページの続き (56)参考文献 特開 昭54−124404（ＪＰ，Ａ) 特開 昭58−78801（ＪＰ，Ａ) 特開 昭60−116511（ＪＰ，Ａ) 実開 昭61−39606（ＪＰ，Ｕ) 特公 平６−98883（ＪＰ，Ｂ２) 特公 平４−29562（ＪＰ，Ｂ２) 特公 平４−29563（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) B60C 11/03 - 11/11Continuation of the front page (56) References JP-A-54-124404 (JP, A) JP-A-58-78801 (JP, A) JP-A-60-116511 (JP, A) , U) JP 6-98883 (JP, B2) JP 4-29562 (JP, B2) JP 4-29563 (JP, B2) (58) Fields surveyed (Int. Cl. 6 , DB) Name) B60C 11/03-11/11
Claims (1)
け、該主溝によりタイヤ幅方向に複数の陸部列を区画形
成し、それら陸部列にタイヤ幅方向に延びる副溝をタイ
ヤ周方向に沿って所定のピッチで配置した空気入りタイ
ヤにおいて、前記副溝により区分したピッチ数を各陸部
列で相違させると共に、車両装着時に車両内側となるタ
イヤ車両装着内側から車両外側に向けて前記陸部列のピ
ッチ数を次第に小さくし、タイヤ車両装着最外側の陸部
列のピッチ数を最少ピッチ数にすると共に、残りの陸部
列を最少ピッチ数よりも２ピッチ以上多くかつ最少ピッ
チ数の２倍未満にし、左右の最外側の主溝よりタイヤ外
側のタイヤ車両装着最内側陸部列及び最外側陸部列の幅
を、該最外側の主溝間に配置した陸部列より幅広に形成
したことを特徴とする空気入りタイヤ。(57) [Claims] A plurality of main grooves extending in the tire circumferential direction are provided on the tread surface, and a plurality of land portions are formed in the tire width direction by the main grooves. Sub-grooves extending in the tire width direction on the land portions are formed in the tire circumferential direction. In the pneumatic tires arranged at a predetermined pitch along the line, the number of pitches divided by the sub-grooves is made different for each land row, and when the vehicle is mounted, the land is mounted from the inside of the vehicle to the outside of the vehicle. The pitch number of the row is gradually reduced, the pitch number of the outermost land row on which the tire vehicle is mounted is reduced to the minimum pitch number, and the remaining land row is increased by at least 2 pitches and the minimum pitch number to the minimum pitch number. The width of the innermost land portion row and the outermost land portion row mounted on the tire vehicle outside the left and right outermost main grooves is wider than the land portion rows arranged between the outermost main grooves. Characterized by being formed Pneumatic tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61305494A JP2805472B2 (en) | 1986-12-23 | 1986-12-23 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61305494A JP2805472B2 (en) | 1986-12-23 | 1986-12-23 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63159110A JPS63159110A (en) | 1988-07-02 |
| JP2805472B2 true JP2805472B2 (en) | 1998-09-30 |
Family
ID=17945837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61305494A Expired - Fee Related JP2805472B2 (en) | 1986-12-23 | 1986-12-23 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805472B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1674293A2 (en) | 2004-12-24 | 2006-06-28 | Sumitomo Rubber Industries, Ltd. | Vehicle tire |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5759311A (en) * | 1996-06-06 | 1998-06-02 | Hankook Tire Mfg. Co., Ltd. | Low noise tire tread |
| ATE376496T1 (en) * | 2002-01-31 | 2007-11-15 | Michelin Soc Tech | TREAD PROFILE AND MANUFACTURING PROCESS |
| JP4684059B2 (en) * | 2005-09-20 | 2011-05-18 | 株式会社ブリヂストン | Pneumatic tire |
| US20080093010A1 (en) * | 2006-10-17 | 2008-04-24 | Bridgestone Firestone North America Tire, Llc | Method for designing the fundamental pitch for a tire tread pattern with variable lug count by rib |
| US8170839B2 (en) * | 2009-04-24 | 2012-05-01 | Bridgestone Americas Tire Operations, Llc | Method of designing a tire tread |
| JP5662785B2 (en) * | 2010-12-14 | 2015-02-04 | 東洋ゴム工業株式会社 | Pneumatic tire |
| JP5387659B2 (en) | 2011-11-14 | 2014-01-15 | 横浜ゴム株式会社 | Pneumatic tire |
| JP5779164B2 (en) * | 2012-10-30 | 2015-09-16 | 住友ゴム工業株式会社 | Pneumatic tire |
| CN103253089A (en) * | 2013-03-13 | 2013-08-21 | 杭州中策橡胶有限公司 | Low-noise tyre and its pattern design method |
| JP6299078B2 (en) * | 2013-04-17 | 2018-03-28 | 横浜ゴム株式会社 | Pneumatic tire |
| BR122020005330B1 (en) * | 2013-07-16 | 2021-08-24 | Pirelli Tyre S.P.A. | CAR TIRE |
| JP6154687B2 (en) * | 2013-07-18 | 2017-06-28 | 住友ゴム工業株式会社 | Pneumatic tire |
| US20170036488A1 (en) * | 2014-04-22 | 2017-02-09 | The Yokohama Rubber Co., Ltd. | Pneumatic Tire |
| JP6084195B2 (en) * | 2014-11-27 | 2017-02-22 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6724317B2 (en) | 2015-09-07 | 2020-07-15 | 横浜ゴム株式会社 | Pneumatic tire |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT378741B (en) * | 1983-01-19 | 1985-09-25 | Semperit Ag | RUNNING PROFILE FOR A VEHICLE AIR TIRE |
| JPS60116511A (en) * | 1983-11-30 | 1985-06-24 | Sumitomo Rubber Ind Ltd | Low noise tire |
-
1986
- 1986-12-23 JP JP61305494A patent/JP2805472B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1674293A2 (en) | 2004-12-24 | 2006-06-28 | Sumitomo Rubber Industries, Ltd. | Vehicle tire |
| US7581574B2 (en) | 2004-12-24 | 2009-09-01 | Sumitomo Rubber Industries, Ltd. | Vehicle tire with tread having at least three annular regions each provided with axial grooves |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63159110A (en) | 1988-07-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |