JP2002046427A - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JP2002046427A JP2002046427A JP2000235306A JP2000235306A JP2002046427A JP 2002046427 A JP2002046427 A JP 2002046427A JP 2000235306 A JP2000235306 A JP 2000235306A JP 2000235306 A JP2000235306 A JP 2000235306A JP 2002046427 A JP2002046427 A JP 2002046427A
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- JP
- Japan
- Prior art keywords
- tire
- circumferential direction
- main grooves
- groove
- grooves
- 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.)
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Links
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- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、騒音性能を実質的
に低下させることなく、タイヤ新品時におけるドライ路
面及びウェット路面での制動性を向上させた空気入りタ
イヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire having improved braking performance on a dry road surface and a wet road surface when a tire is new without substantially reducing noise performance.
【０００２】[0002]
【従来の技術】一般に、従来の小型トラックなどの車両
に用いられる空気入りタイヤは、図３に示すように、ト
レッド面１１にタイヤ周方向Ｔに延びる主溝１２を４本
設け、それら主溝１２によりタイヤ周方向Ｔに延びる複
数のリブ１３を区分形成した構成になっている。なお、
図３において、１４はショルダー部１５にタイヤ周方向
Ｔに所定のピッチで配設されたラグ溝、１６はサイプ、
ＣＬはタイヤセンターライン（タイヤ赤道線）である。2. Description of the Related Art Generally, a conventional pneumatic tire used for a vehicle such as a small truck has four main grooves 12 extending in a tire circumferential direction T on a tread surface 11 as shown in FIG. 12, a plurality of ribs 13 extending in the tire circumferential direction T are formed separately. In addition,
In FIG. 3, reference numeral 14 denotes a lug groove provided on the shoulder portion 15 at a predetermined pitch in the tire circumferential direction T, 16 denotes a sipe,
CL is a tire center line (tire equator line).
【０００３】ところで近年、環境問題の観点から走行車
両の低騒音化がいっそう求められている。そこで、図４
に示すように、トレッド面１１における主溝１２の本数
を３本以下に減らして、騒音の主たる原因の一つである
溝面積比率（トレッド面に対する溝面積の割合）を減少
させるような対策が採られている。[0003] In recent years, there has been a further demand for lowering the noise of traveling vehicles from the viewpoint of environmental problems. Therefore, FIG.
As shown in (1), there is a measure to reduce the number of the main grooves 12 in the tread surface 11 to three or less and to reduce a groove area ratio (a ratio of the groove area to the tread surface) which is one of the main causes of noise. Has been adopted.
【０００４】しかしながら、このように溝面積比率を低
減すると、接地面積の増大に伴ってリブ１３の幅が大き
くなる。その結果、排水性が悪化するのでウェット路面
での制動性の低下を招くと共に、接地面積の増加による
単位面積当たりの接地圧力が低下するため、特にトレッ
ド面が滑らかな（表面粗さが小さい）ために路面摩擦力
が小さい新品時のタイヤにおいて、ドライ路面での制動
性が低下するという問題があった。[0004] However, when the groove area ratio is reduced in this manner, the width of the rib 13 increases with an increase in the ground contact area. As a result, the drainage performance is deteriorated, so that the braking performance on a wet road surface is reduced, and the ground pressure per unit area is reduced due to the increase in the ground surface area, so that the tread surface is particularly smooth (the surface roughness is small) Therefore, there is a problem that the braking performance on a dry road surface is reduced in a new tire having a low road surface friction force.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、騒音
性能を実質的に低下させることなしに、タイヤ新品時に
おけるドライ路面及びウェット路面での制動性を向上さ
せた空気入りタイヤを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a pneumatic tire having improved braking performance on dry and wet road surfaces when the tire is new, without substantially reducing noise performance. It is in.
【０００６】[0006]
【課題を解決するための手段】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２〜３本の主
溝を設け、該主溝によりタイヤ周方向に延びる複数のリ
ブを形成した空気入りタイヤにおいて、前記主溝間にリ
ブをタイヤ幅方向に横断する溝深さ２mm未満、溝幅２mm
以上５mm未満の浅溝をタイヤ周方向に所定のピッチで配
置したことを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides two or three main grooves extending in the tire circumferential direction on a tread surface, and the main grooves form a plurality of ribs extending in the tire circumferential direction. In the pneumatic tire, a groove depth of less than 2 mm and a groove width of 2 mm crossing the rib in the tire width direction between the main grooves.
The shallow grooves of less than 5 mm are arranged at a predetermined pitch in the tire circumferential direction.
【０００７】このように主溝間に浅溝を配置している
が、この浅溝は、溝深さ２mm未満、溝幅２mm以上５mm未
満という極めて浅くて幅の小さいものであるので、騒音
には実質的に何ら影響を与えるものではないから、図４
に示されるような３本以下の主溝を有する従来のタイヤ
に比し、騒音性能を実質的に低下させるものではない。Although the shallow grooves are arranged between the main grooves as described above, the shallow grooves are extremely shallow and have a small width of less than 2 mm and a width of 2 mm or more and less than 5 mm. Has virtually no effect,
The noise performance is not substantially reduced as compared with a conventional tire having three or less main grooves as shown in FIG.
【０００８】また、この浅溝の排水効果、及びその浅溝
のエッジ効果により、タイヤ新品時におけるドライ路面
及びウェット路面での制動性を向上させることが可能と
なる。The drainage effect of the shallow groove and the edge effect of the shallow groove make it possible to improve braking performance on a dry road surface and a wet road surface when a tire is new.
【０００９】[0009]
【発明の実施の形態】以下、本発明の構成について添付
の図面を参照しながら詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.
【００１０】図１及び図２はそれぞれ本発明の空気入り
タイヤの一例の要部を示し、１はトレッド面、ＣＬはタ
イヤセンターラインである。トレッド面１にはタイヤ周
方向Ｔにジグザグ状に延びる３本の主溝２が設けられ、
これら３本の主溝２によりタイヤ周方向Ｔに延びる複数
のリブ３が区分形成されている。トレッド面１の両ショ
ルダー部４、４のリブ３には、ラグ溝５とサイプ６とが
タイヤ周方向Ｔに所定のピッチで配設されている。FIGS. 1 and 2 each show a main part of an example of a pneumatic tire according to the present invention, wherein 1 is a tread surface and CL is a tire center line. The tread surface 1 is provided with three main grooves 2 extending zigzag in the tire circumferential direction T,
A plurality of ribs 3 extending in the tire circumferential direction T are formed separately by these three main grooves 2. A lug groove 5 and a sipe 6 are arranged at a predetermined pitch in the tire circumferential direction T on the ribs 3 of the shoulder portions 4, 4 of the tread surface 1.
【００１１】主溝２間のリブ３には、タイヤ幅方向にス
トレート状に延びる浅溝７がタイヤ周方向Ｔに所定のピ
ッチで配置されている。これらの浅溝７は、溝深さＧが
２mm未満、溝幅Ｌが２mm以上５mm未満に構成され、リブ
３をタイヤ幅方向に横断してその両端が主溝２に連通し
ている。サイプ６は、深さ及び幅が共に浅溝７よりも大
きい。In the ribs 3 between the main grooves 2, shallow grooves 7 extending straight in the tire width direction are arranged at a predetermined pitch in the tire circumferential direction T. These shallow grooves 7 have a groove depth G of less than 2 mm and a groove width L of 2 mm or more and less than 5 mm, and both ends thereof communicate with the main groove 2 across the rib 3 in the tire width direction. The sipe 6 is larger in depth and width than the shallow groove 7.
【００１２】このように主溝２の本数を３本以下（２〜
３本）に減らして騒音の主たる原因の一つである溝面積
比率を減少させるようにしているので、騒音性能を改善
することができる。しかも、主溝２の本数を減らして幅
が広くなった主溝２間のリブ３にタイヤ幅方向に横断す
る上述した寸法の浅溝７を設けることで、騒音性能を損
なわずに、浅溝７のエッジ効果により路面との摩擦力を
増大することができ、かつ排水性が改善されるので、新
品時におけるドライ路面及びウェット路面での制動性を
向上させることができる。Thus, the number of the main grooves 2 is three or less (2 to 2).
3) to reduce the groove area ratio, which is one of the main causes of noise, so that noise performance can be improved. In addition, by providing the shallow grooves 7 having the above-mentioned dimensions transversely in the tire width direction on the ribs 3 between the main grooves 2 having a reduced width and a reduced number of the main grooves 2, the noise performance is reduced. Since the frictional force with the road surface can be increased by the edge effect of No. 7 and the drainage property is improved, the braking performance on a dry road surface and a wet road surface at the time of new use can be improved.
【００１３】浅溝７の溝深さＧが２mm以上になると、リ
ブ剛性の低下により路面とリブとの接地時のリブの振動
により騒音性能が悪化する。好ましくは、溝深さＧは、
０．５〜１．５mmがよい。If the groove depth G of the shallow groove 7 is 2 mm or more, the noise performance deteriorates due to the vibration of the rib when the road surface and the rib contact the ground due to the reduction of the rib rigidity. Preferably, the groove depth G is
0.5 to 1.5 mm is preferred.
【００１４】浅溝７の溝幅Ｌが２mm未満であると、溝幅
が狭過ぎて排水性の改善効果が乏しく、ウェット路面で
の制動性の低下を招く。逆に５mm以上になると、浅溝７
に起因する騒音の問題が生じる。好ましくは、溝幅Ｌ
は、２〜４mmがよい。If the groove width L of the shallow groove 7 is less than 2 mm, the groove width is too narrow, and the effect of improving drainage is poor, and the braking performance on a wet road surface is reduced. Conversely, if it becomes 5 mm or more,
This causes a problem of noise caused by the noise. Preferably, the groove width L
Is preferably 2 to 4 mm.
【００１５】本発明において、浅溝７は、タイヤ周方向
Ｔに対し８０〜１００°の傾斜角度θで配置するのが好
ましい。傾斜角度θが８０°より小さくても１００°を
越えても、制動性の低下を招く。In the present invention, the shallow grooves 7 are preferably arranged at an inclination angle θ of 80 to 100 ° with respect to the tire circumferential direction T. If the inclination angle θ is smaller than 80 ° or exceeds 100 °, the braking performance is reduced.
【００１６】浅溝７の本数としては、タイヤを正規リム
に装着し、正規内圧、正規荷重の条件下で路面に接地し
た際に、その接地面内に浅溝７が２〜６本存在する本数
であるのがよい。浅溝７の本数が２本未満であると、制
動性が低下し、逆に６本を越えると、リブ剛性が低下し
て騒音性能が悪化するからである。ここで、正規リム、
正規内圧、正規荷重とは、１９９９年版のＪＡＴＭＡに
規定されるものをいう。The number of the shallow grooves 7 is such that when the tire is mounted on a regular rim and the tire is grounded on a road surface under the conditions of a normal internal pressure and a normal load, two to six shallow grooves 7 exist in the ground contact surface. The number is good. If the number of the shallow grooves 7 is less than two, the braking performance decreases, and if it exceeds six, the rib rigidity decreases and the noise performance deteriorates. Where the regular rim,
The normal internal pressure and the normal load refer to those defined in the 1999 edition of JATMA.
【００１７】上述した実施形態において、３本の主溝２
を有する空気入りタイヤについて説明したが、本発明で
は主溝２の数は２本であってもよい。In the embodiment described above, three main grooves 2
Although the description has been given of the pneumatic tire having the following, the number of the main grooves 2 may be two in the present invention.
【００１８】本発明は、特に小型トラックに用いられる
空気入りタイヤに好ましく適用することができるが、そ
れに限定されない。The present invention can be preferably applied particularly to a pneumatic tire used for a small truck, but is not limited thereto.
【００１９】[0019]
【実施例】タイヤサイズを６５０Ｒ１６ １０ ＰＲで
共通にし、図１に示す構成のタイヤにおいて、浅溝の溝
深さＧと溝幅Ｌを表１のように変えた本発明タイヤ１〜
２と比較タイヤ１〜２、及び図３に示す４本の主溝を有
する従来タイヤ１と、図４に示すように浅溝を設けてい
ない３本の主溝を有する構成の従来タイヤ２とをそれぞ
れ作製した。EXAMPLE Tires 1 to 5 of the present invention in which the tire size was made common to 650R16 10 PR and the groove depth G and groove width L of the shallow groove were changed as shown in Table 1 in the tire having the structure shown in FIG.
2 and comparative tires 1 and 2, and a conventional tire 1 having four main grooves shown in FIG. 3, and a conventional tire 2 having three main grooves having no shallow grooves as shown in FIG. Were prepared respectively.
【００２０】本発明タイヤ１〜２及び比較タイヤ１〜２
において、浅溝のタイヤ周方向に対する傾斜角度θは９
０°、浅溝の接地面内の本数は５本で共通である。The tires 1 and 2 of the present invention and the comparative tires 1 and 2
The inclination angle θ of the shallow groove with respect to the tire circumferential direction is 9
The number of 0 ° and the number of shallow grooves in the ground plane are common to five.
【００２１】これら各タイヤを以下に示す評価条件によ
り、新品時ドライ制動性、新品時ウェット制動性、３０
％摩耗時ドライ制動性、３０％摩耗時ウェット制動性、
騒音性の評価試験を行ったところ、表１に示す結果を得
た。なお、３０％摩耗時とは、本発明タイヤ及び比較タ
イヤにおいて、浅溝が摩耗により消失した状態である。Under the following evaluation conditions, each of these tires has a new dry braking property, a new wet braking property,
% Dry braking, 30% wet braking,
When an evaluation test of noise performance was performed, the results shown in Table 1 were obtained. The condition of 30% wear refers to a state in which the shallow groove has disappeared due to wear in the tire of the present invention and the comparative tire.
【００２２】新品時ドライ制動性：新品時の各タイヤを
リムサイズ１６×５．５０Ｆのリムに装着し、空気圧を
５５０kPa にして積載量２ｔの小型トラック（定積積
載）に装着し、ドライ路テストコースにおいて、速度５
０ｋｍ／ｈからロック制動を実施し、その停止までの距
離を測定し、その結果を従来タイヤ１を１００とする指
数値で評価した。この値が大きい程新品時ドライ制動性
が優れている。 Dry braking performance when new : Each new tire is mounted on a rim having a rim size of 16 × 5.50F, the air pressure is set to 550 kPa, and the tire is mounted on a small truck (constant loading) having a loading capacity of 2 tons and a dry road test. Speed 5 on course
Lock braking was performed from 0 km / h, the distance to the stop was measured, and the result was evaluated as an index value with the conventional tire 1 being 100. The larger this value is, the better the new dry braking performance is.
【００２３】新品時ウェット制動性：新品時の各タイヤ
をリムサイズ１６×５．５０Ｆのリムに装着し、空気圧
を５５０kPa にして積載量２ｔの小型トラック（定積積
載）に装着し、ウェット路テストコースにおいて、速度
５０ｋｍ／ｈからロック制動を実施し、その停止までの
距離を測定し、その結果を従来タイヤ１を１００とする
指数値で評価した。この値が大きい程新品時ウェット制
動性が優れている。 New-wet braking : New tires are mounted on a rim with a rim size of 16 × 5.50F, the air pressure is set to 550 kPa, and the truck is mounted on a small truck (constant load) with a loading capacity of 2 tons and a wet road test. On the course, lock braking was performed at a speed of 50 km / h, the distance to the stop was measured, and the result was evaluated as an index value with the conventional tire 1 being 100. The larger this value, the better the new wet braking performance.
【００２４】３０％摩耗時ドライ制動性：３０％摩耗時
の各タイヤをリムサイズ１６×５．５０Ｆのリムに装着
し、空気圧を５５０kPa にして積載量２ｔの小型トラッ
ク（定積積載）に装着し、ドライ路テストコースにおい
て、速度５０ｋｍ／ｈからロック制動を実施し、その停
止までの距離を測定し、その結果を従来タイヤ１を１０
０とする指数値で評価した。この値が大きい程３０％摩
耗時ドライ制動性が優れている。 Dry braking performance at 30% wear : Each tire at 30% wear is mounted on a rim having a rim size of 16 × 5.50F, the air pressure is set to 550 kPa, and the tire is mounted on a small truck (constant load) having a loading capacity of 2 tons. On a dry road test course, lock braking was performed from a speed of 50 km / h, and the distance to the stop was measured.
The evaluation was made with an index value of 0. The larger this value is, the more excellent the dry braking performance at 30% wear.
【００２５】３０％摩耗時ウェット制動性：３０％摩耗
時の各タイヤをリムサイズ１６×５．５０Ｆのリムに装
着し、空気圧を５５０kPa にして積載量２ｔの小型トラ
ック（定積積載）に装着し、ウェッ路トテストコースに
おいて、速度５０ｋｍ／ｈからロック制動を実施し、そ
の停止までの距離を測定し、その結果を従来タイヤ１を
１００とする指数値で評価した。この値が大きい程３０
％摩耗時ウェット制動性が優れている。 Wet braking performance at 30% wear : Each tire at 30% wear is mounted on a rim having a rim size of 16 × 5.50F, the air pressure is set to 550 kPa, and the tire is mounted on a small truck (constant load) having a loading capacity of 2 tons. On the wet road test course, lock braking was performed from a speed of 50 km / h, the distance to the stop was measured, and the result was evaluated by an index value with the conventional tire 1 being 100. The larger this value is, the more 30
% Excellent wet braking performance when worn.
【００２６】騒音性：新品時の各試験タイヤをリムサイ
ズ１６×５．５０Ｆのリムに装着し、空気圧を５５０kP
a にして積載量２ｔの小型トラック（定積積載）に装着
し、ドライ路テストコースにおいて、ＪＡＳＯ規定条件
にて進入速度５０ｋｍ／ｈの惰行騒音を測定し、その結
果を従来タイヤ１を１００とする指数値で評価した。こ
の値が大きい程騒音が小さく、騒音性が優れている。 Noise performance : Each new test tire was mounted on a rim of rim size 16 × 5.50F and the air pressure was 550 kP.
a, mounted on a small truck with a loading capacity of 2 tons (constant load), and measured the coasting noise at an approach speed of 50 km / h under the JASO specified conditions on a dry road test course. The index value was evaluated. The larger this value is, the smaller the noise is and the more excellent the noise is.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１から明らかなように、本発明タイヤ１
〜２は、従来タイヤ１〜２に比し、騒音性を低下させる
ことなく新品時におけるドライ路面及びウェット路面で
の制動性を向上させることができる。比較タイヤ１は、
従来タイヤ１〜２に比し、新品時におけるドライ路面及
びウェット路面での制動性には優れるが騒音性が悪い。
比較タイヤ２は、従来タイヤ１〜２に比し、いずれにお
いても向上がみられない。As is clear from Table 1, the tire 1 of the present invention
Nos. 1 to 2 can improve braking performance on a dry road surface and a wet road surface at the time of a new product without lowering noise performance as compared with the conventional tires 1 and 2. Comparative tire 1
Compared to the conventional tires 1 and 2, the braking performance on a dry road surface and a wet road surface at the time of a new tire is excellent, but the noise performance is poor.
The comparative tire 2 shows no improvement in any of the conventional tires 1 and 2.
【００２９】[0029]
【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２〜３本の主溝を設け、該主溝に
よりタイヤ周方向に延びる複数のリブを形成した空気入
りタイヤにおいて、主溝間にリブをタイヤ幅方向に横断
する溝深さ２mm未満、溝幅２mm以上５mm未満の浅溝をタ
イヤ周方向に所定のピッチで配置したので、騒音性能を
実質的に低下させることなしに、タイヤ新品時における
ドライ路面及びウェット路面での制動性を向上させるこ
とができる。As described above, the present invention relates to a pneumatic tire in which two or three main grooves extending in the tire circumferential direction are provided on the tread surface and a plurality of ribs extending in the tire circumferential direction are formed by the main grooves. Since the shallow grooves having a groove depth of less than 2 mm and the groove width of 2 mm or more and less than 5 mm are arranged at a predetermined pitch in the tire circumferential direction between the main grooves, the groove depth is less than 2 mm, and the noise performance is substantially reduced. Without this, it is possible to improve braking performance on a dry road surface and a wet road surface when a new tire is used.
【図１】本発明の空気入りタイヤの一例を示すトレッド
面要部展開図である。FIG. 1 is a development view of a principal part of a tread surface showing an example of a pneumatic tire of the present invention.
【図２】図１の空気入りタイヤの要部拡大斜視図であ
る。FIG. 2 is an enlarged perspective view of a main part of the pneumatic tire of FIG.
【図３】従来の空気入りタイヤの一例を示すトレッド面
要部展開図である。FIG. 3 is an exploded view of an essential part of a tread surface showing an example of a conventional pneumatic tire.
【図４】従来の空気入りタイヤの他の例を示すトレッド
面要部展開図である。FIG. 4 is an exploded view of a main part of a tread surface showing another example of a conventional pneumatic tire.
１ トレッド面 ２ 主溝 ３ リブ ４ ショルダー部 ５ ラグ溝 ６ サイプ ７ 浅溝 ＣＬ タイヤセンターライン Ｔ タイヤ周方向 Ｇ 溝深さ Ｌ 溝幅 θ 傾斜角度 Reference Signs List 1 tread surface 2 main groove 3 rib 4 shoulder 5 lug groove 6 sipes 7 shallow groove CL tire center line T tire circumferential direction G groove depth L groove width θ inclination angle
Claims (3)
３本の主溝を設け、該主溝によりタイヤ周方向に延びる
複数のリブを形成した空気入りタイヤにおいて、前記主
溝間にリブをタイヤ幅方向に横断する溝深さ２mm未満、
溝幅２mm以上５mm未満の浅溝をタイヤ周方向に所定のピ
ッチで配置した空気入りタイヤ。1. A tire extending in a tire circumferential direction on a tread surface.
In a pneumatic tire provided with three main grooves and formed with a plurality of ribs extending in the tire circumferential direction by the main grooves, a groove depth of less than 2 mm crossing the ribs in the tire width direction between the main grooves;
A pneumatic tire in which shallow grooves having a groove width of 2 mm or more and less than 5 mm are arranged at a predetermined pitch in the tire circumferential direction.
００°の傾斜角度で配置した請求項１記載の空気入りタ
イヤ。2. The method according to claim 1, wherein the shallow groove is formed at a distance of 80 to 1 with respect to the tire circumferential direction.
The pneumatic tire according to claim 1, wherein the tire is arranged at a tilt angle of 00 °.
の条件下で路面に接地した際に、その接地面内に前記浅
溝が２〜６本存在する請求項１又は２記載の空気入りタ
イヤ。3. The air according to claim 1, wherein when installed on a regular rim and grounded on a road surface under conditions of a normal internal pressure and a normal load, two to six shallow grooves are present in the ground contact surface. Containing tires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000235306A JP4346221B2 (en) | 2000-08-03 | 2000-08-03 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000235306A JP4346221B2 (en) | 2000-08-03 | 2000-08-03 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002046427A true JP2002046427A (en) | 2002-02-12 |
| JP4346221B2 JP4346221B2 (en) | 2009-10-21 |
Family
ID=18727538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000235306A Expired - Fee Related JP4346221B2 (en) | 2000-08-03 | 2000-08-03 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4346221B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012513930A (en) * | 2008-12-24 | 2012-06-21 | ピレリ・タイヤ・ソチエタ・ペル・アツィオーニ | Tire for motor vehicle |
| JP2015020567A (en) * | 2013-07-18 | 2015-02-02 | 住友ゴム工業株式会社 | Pneumatic tire |
-
2000
- 2000-08-03 JP JP2000235306A patent/JP4346221B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012513930A (en) * | 2008-12-24 | 2012-06-21 | ピレリ・タイヤ・ソチエタ・ペル・アツィオーニ | Tire for motor vehicle |
| JP2015020567A (en) * | 2013-07-18 | 2015-02-02 | 住友ゴム工業株式会社 | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4346221B2 (en) | 2009-10-21 |
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