JPS63295243A - Ring-shaped precured tread for regenerated tire and tire regenerating method - Google Patents
Ring-shaped precured tread for regenerated tire and tire regenerating methodInfo
- Publication number
- JPS63295243A JPS63295243A JP61249412A JP24941286A JPS63295243A JP S63295243 A JPS63295243 A JP S63295243A JP 61249412 A JP61249412 A JP 61249412A JP 24941286 A JP24941286 A JP 24941286A JP S63295243 A JPS63295243 A JP S63295243A
- Authority
- JP
- Japan
- Prior art keywords
- seal plate
- tire
- tread
- casing
- ring
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001172 regenerating effect Effects 0.000 title 1
- 238000004073 vulcanization Methods 0.000 claims abstract description 26
- 239000004568 cement Substances 0.000 abstract description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D2030/523—Ring-shaped treads
Landscapes
- Tyre Moulding (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
近年タイヤ技術の進歩により、タイヤビード部の耐久性
、ベルトもしくはブレーカの耐久性が向上し、タイヤの
トレッド部が摩耗しその使用寿命を終了しても台タイヤ
はよほど苛酷な使用条件で酷使されない限り再使用が可
能であるため、残存トレッドゴムを除去し、その上に新
らしいトレッド部をかぶせて加硫してタイヤを更生する
更生タイヤ技術の改良特に１品質及び作業性、生産性の
向上がますます求められている。[Detailed Description of the Invention] (Industrial Application Field) Due to recent advances in tire technology, the durability of the tire bead, belt or breaker has improved, and the tread of the tire wears out, ending its useful life. Since tires can be reused as long as they are not overused under very harsh operating conditions, retread tires are made by removing the remaining tread rubber, covering it with a new tread, and curing it to retread the tire. Improvements in technology, especially improvements in quality, workability, and productivity are increasingly required.
本発明は、プレキュアトレッド式の更生方法によシタイ
ヤを更生することに係る更生タイヤ用プレキュアトレッ
ド及びタイヤ更生方法に関する。The present invention relates to a precure tread for a retreaded tire and a tire retreading method, which involves retreading a seat tire using a precure tread type retreading method.
（従来技術）
タイヤ更生方法は、実用上２つの方法に大別され、その
第１の方法は、未加硫の加硫性トレッドを貼り付けた台
タイヤを加硫モールドに入れ、トレッドパターン等の型
付けと高温加圧下での加硫を同時に行なうものである。(Prior art) Tire retreading methods can be broadly divided into two methods in practice.The first method is to place a base tire with an unvulcanized vulcanizable tread pasted into a vulcanization mold, and then create a tread pattern etc. This method simultaneously performs molding and vulcanization under high temperature and pressure.
第２の方法は、あらかじめトレッドのみを加硫モールド
でパターン型付けを行なうと共に加硫硬化させて準備さ
れたブレキーアトレッドを１台タイヤに特殊配合の加硫
性クッションゴムを介して貼り合せ、加硫缶内にて比較
的低温で加圧加硫し、プレキュアトレッドと台タイヤを
接合させるものである。The second method involves patterning only the tread using a vulcanization mold, and then vulcanizing and curing the tread, which has been prepared, and then bonding it to one tire via a specially formulated vulcanizable cushion rubber. The precure tread and base tire are bonded together by pressure vulcanization at a relatively low temperature in a sulfur can.
本発明は後者のプレキュアトレッド式の更生方法に関す
る。この更生方法は、前者の更生方法に比し、比較的低
温で加硫されるため、台タイヤをいためる度合が少なく
品質上の利点が得られる。The present invention relates to the latter precure tread type refurbishment method. Compared to the former retreading method, this retreading method is vulcanized at a relatively low temperature, so it is less likely to damage the base tire and has a quality advantage.
従来、プレキュアトレッド式の更生方法は、第１０図及
び第１１図に示すように、プレキュアトレッド２０が台
タイヤ２１との間にクッションゴム２２を介装して台タ
イヤの上に貼り付けられる。Conventionally, in the precure tread type retreading method, as shown in FIGS. 10 and 11, the precure tread 20 is pasted on the base tire with a cushion rubber 22 interposed between it and the base tire 21. It will be done.
プレキュアトレッドが平型の加硫モールドで加硫された
場合には、長尺状のプレキュアトレッドが台タイヤの上
に巻き付けられ１両端がクッションゴムによって接合さ
れ貼シ付は作業がなされる。When the precure tread is vulcanized in a flat vulcanization mold, the elongated precure tread is wrapped around the base tire and both ends are joined with cushion rubber, and the pasting process is performed. .
この他に、プレキュアトレッドがエンドレス状ニ加硫す
るための加硫モールドでリング形状に加硫硬化される場
合がある。通常、このリング状プレキュアトレッドは内
径が台タイヤの外径より若干（２〜１０％）小さめに設
定されて加硫される。In addition, the precure tread may be cured into a ring shape using a vulcanization mold for endless double vulcanization. Usually, this ring-shaped precure tread is vulcanized with the inner diameter set to be slightly (2 to 10%) smaller than the outer diameter of the base tire.
従って、リング状のプレキュアトレッドは治具により拡
径されて台タイヤ上に載置され貼り付けられる。Therefore, the ring-shaped precure tread is expanded in diameter using a jig and placed on the base tire to be attached.
リング状プレキュアトレッドは、長尺状プレキュアトレ
ッドに必要な両端部の接合作業が不要である点、自動化
に有利である。The ring-shaped precure tread is advantageous for automation because it does not require the work of joining both ends, which is required for the long precure tread.
このようにプレキュアトレッドが台タイヤに貼り付けら
れた組立体は加硫缶内に入れられ加圧下でスチーム、エ
ア等の熱媒体によって加硫一体化されるが、更生面の気
密性保持と圧着をするために１組立体の少なくともプレ
キュアトレッドと台タイヤとが加硫一体化される更生面
は、エンベロツブ２３によって気密性が保持されて被覆
される。The assembly in which the pre-cured tread is pasted on the base tire is placed in a vulcanizing can and vulcanized under pressure using a heat medium such as steam or air, but this process is difficult to maintain the airtightness of the retreaded surface. The retreaded surface on which at least the precure tread and base tire of one assembly are vulcanized and integrated for crimping is covered with an envelope 23 while maintaining airtightness.
第１０図は、台タイヤがリム組みされる場合を示し、エ
ンベロッｆ２３は台タイヤとリム２４間にその両端が固
定されてセットされる。このようにリム組みされた台タ
イヤ内部にはチューブ２５及びフラッグ２６が挿入され
ており、チューブ内には内圧が充填され、加硫缶内での
加圧に対抗する。FIG. 10 shows a case where the base tire is assembled on a rim, and the envelope f23 is set between the base tire and the rim 24 with both ends thereof being fixed. A tube 25 and a flag 26 are inserted into the base tire assembled on the rim in this way, and the tube is filled with internal pressure to counteract the pressurization inside the vulcanizer.
第１１図はリム組されない場合を示し０台タイヤ２１は
、リング３０上に押え板２７．２８に挾まれて固定され
るが、エンベロツブ２３は押え板２７及び２８と台タイ
ヤとの間に挟圧されて固定される。FIG. 11 shows the case where the rim is not assembled, and the zero tire 21 is fixed on the ring 30 by holding plates 27 and 28, but the envelope 23 is sandwiched between the holding plates 27 and 28 and the main tire. It is pressed and fixed.
台タイヤ内部にはエアバック２９が挿入され、エアバッ
ク内には加硫缶内での加圧加硫に先立って内圧が充填さ
れ、エンベロツブ２３による更生面の気密性が保持され
る。An air bag 29 is inserted into the base tire, and the air bag is filled with internal pressure prior to pressure vulcanization in the vulcanizer, and the airtightness of the retreaded surface by the envelope 23 is maintained.
（発明が解決しようとする問題点）
しかしながら、このエンベロツブの着脱は主に人手によ
らねばならず、生産性を阻害するのみならず、プレキュ
アトレッドは台タイヤ上に正確にセンタリングされて加
硫さｎなければならないが、エンベロツブ装着時にプレ
キュアトレッドがづれてしま）場合があり、このづれは
加硫後エンペロッｆ−５（外してみないと確認できず、
不良品の発生につながるための熟練を要し、生産性を低
下させている。−！た、エンベロツブの使用寿命は短か
くコスト高となることを余儀なくされており、さらに、
エンベロツブの使用は熱効率を低下させ加硫時間の短縮
化のさまたげとなるなどの問題がある。(Problem to be solved by the invention) However, attachment and detachment of this envelope must be done mainly by hand, which not only hinders productivity, but also prevents the precure tread from being accurately centered on the base tire when vulcanized. However, when installing the envelope, the precure tread may shift), and this shift cannot be confirmed unless the envelope is removed after vulcanization.
This requires skill, which leads to the production of defective products, reducing productivity. -! In addition, the useful life of the envelope is short and the cost is high.
The use of envelopes has problems such as lowering thermal efficiency and hindering shortening of vulcanization time.
従って、本発明はタイヤの更生を簡便なものとし、作業
性、生産性を向上することを主たる目的とするものであ
る。Therefore, the main object of the present invention is to simplify tire retreading and improve workability and productivity.
（問題点を解決するための手段）
本発明は、トレッド部と、該トレッド部のショルダー部
にシール板が接合部を介して取り付けられリング状に加
硫されてなる更生タイヤ用リング状プレキュアトレッド
を提供するものであり、また、シール板が接合部を介し
て取り付けられたリング状ゾレキエアトレッドを台タイ
ヤとの間にクッションゴムを介装させて貼り付け、シー
ル板にてプレキュアトレッドと台タイヤとが加硫一体化
される更生面を気密性を保持して被覆し、加硫工程を経
た後に上記シール板を取り除いてなるタイヤ更生方法を
提案するものである。(Means for Solving the Problems) The present invention provides a ring-shaped precure for retreaded tires, which includes a tread portion and a seal plate attached to the shoulder portion of the tread portion via a joint portion and vulcanized into a ring shape. In addition, a ring-shaped ZOLETKI air tread with a seal plate attached via the joint is pasted with a cushion rubber interposed between the base tire and pre-cured with the seal plate. This invention proposes a tire retreading method in which the retreaded surface where the tread and base tire are vulcanized and integrated is coated in an airtight manner, and the seal plate is removed after the vulcanization process.
（作用）
リング状のプレキュアトレッドのショルダー部に接合部
を介してシール板が取付けられたものであるため、台タ
イヤにかかるプレキュアトレッドを貼り付けることによ
シ、シール板によってプレキュアトレッドと台タイヤと
が加硫一体化される更生面を簡便容易に気密性を保持し
て被覆することができ、プレキュアトレッドとシール板
が一体であるのでセンタリングを管理して被覆作業を進
めることができ、さらに、加硫後シール板はプレキュア
トレッドとの接合部において取り除き得るようにするこ
とができるため、作業性、生産性よく、更生タイヤを得
ることができる。(Function) Since the seal plate is attached to the shoulder part of the ring-shaped precure tread through the joint, by pasting the precure tread on the base tire, the precure tread can be removed by the seal plate. The retreaded surface where the precure tread and the base tire are integrated by vulcanization can be simply and easily coated while maintaining airtightness, and since the pre-cured tread and seal plate are integrated, centering can be managed and the coating work can proceed. Furthermore, since the seal plate can be removed after vulcanization at the joint with the precure tread, a retreaded tire can be obtained with good workability and productivity.
（実施例）
以下本発明を実施例により図面を参照しつつ具体的に説
明する。(Example) Hereinafter, the present invention will be specifically described by way of an example with reference to the drawings.
第１図、第３図、第５図は本発明の実施例を示す断面図
である。プレキュアトレッド６は、トレッド部１のショ
ルダー部２にシール板３が接合部４を介して一体的にリ
ング状に加硫されている。1, 3, and 5 are cross-sectional views showing embodiments of the present invention. In the precure tread 6, a seal plate 3 is integrally vulcanized to a shoulder portion 2 of a tread portion 1 via a joint portion 4 in a ring shape.
シール板はトレッド部１のショルダー部２から下垂され
ており、台タイヤとの更生面を気密性をもって被覆する
ことができる。シール板は、更生面金気密にシールする
に十分な長さと下垂形状を持てば足り、第７ａ図〜第７
Ｃ図に示すように内側に湾曲させることによって、一層
自緊作用を高めシール性を向上させ得る。また、接合部
４は第４図に示すようにシール板３と同等もしくはそれ
以上の厚みとすることができるが、第２図もしくは第６
図に示すようにシール板３より薄くすることにより、更
生面が加硫接着された後のシール板の除去を容易にでき
る。さらに接合部に第８ａ図〜第８ｄ図に示すように切
込み７を設けることにより除去作業を容易にすることが
できる。The seal plate hangs down from the shoulder part 2 of the tread part 1, and can cover the retreaded surface with the base tire with airtightness. The sealing plate only needs to have a length and a drooping shape that are sufficient to airtightly seal the rehabilitated surface.
By curving it inward as shown in Figure C, it is possible to further enhance the self-tightening effect and improve the sealing performance. Further, as shown in FIG. 4, the joint portion 4 can have a thickness equal to or greater than that of the seal plate 3, but as shown in FIG.
By making the seal plate thinner than the seal plate 3 as shown in the figure, the seal plate can be easily removed after the rehabilitated surface is vulcanized and bonded. Furthermore, the removal work can be facilitated by providing a notch 7 in the joint portion as shown in FIGS. 8a to 8d.
本発明のプレキュアトレッドは、エンドレス状に加硫す
るための加硫モールドにより、リング状に加硫硬化され
る。すなわち、未加硫の加硫硬化性のトレッドゴムスト
ックが加硫モールドに入れられ、加硫モールドを締める
ことにより、コ９ム流動によってシール板３がショルダ
ー部２に接合部４と共に一体的に形成される。シール板
３は加硫によりゴム弾性を発現することになる。５は、
加硫モールドによって何型されたトレッドパターンを形
成するトレッド溝である。The precure tread of the present invention is vulcanized and cured into a ring shape using a vulcanization mold for endless vulcanization. That is, unvulcanized vulcanization hardenable tread rubber stock is placed in a vulcanization mold, and by tightening the vulcanization mold, the seal plate 3 is integrally attached to the shoulder portion 2 together with the joint portion 4 due to the flow of the rubber. It is formed. The seal plate 3 develops rubber elasticity through vulcanization. 5 is
These are tread grooves that form a tread pattern shaped by a vulcanization mold.
第９＆図及び第９ｂ図は、各々第３図及び第５図に示す
本発明のプレキュアトレッドによって台タイヤの更生面
が被覆された状態を示す。リング状の本発明のプレキュ
アトレッドが治具によりやや拡径されて台タイヤ８上に
載置され、治具を取り除くことによりクッションゴム７
を介して台タイヤ上に貼り付けられる。なお、シール板
３はこの際にはショルダー部２の上方にまくり上げられ
、作業をしやすくすることができる。Figures 9 & 9 and 9b show the retreaded surface of the base tire covered with the precure tread of the present invention shown in Figures 3 and 5, respectively. The ring-shaped precure tread of the present invention is slightly enlarged in diameter with a jig and placed on the base tire 8, and by removing the jig, the cushion rubber 7
It is pasted onto the stand tire through. Note that the seal plate 3 is rolled up above the shoulder portion 2 at this time, making the work easier.
このように台タイヤにプレキュアトレッド６を貼り付け
、シール板３を台タイヤの上に沿わせることにより、シ
ール板３のゴム弾性による自緊作用により、シール板３
が台タイヤに密着する。さらに台タイヤとシール板の密
着シール性を良くするため、台タイヤと接触するシール
板面にブチル系セメントを塗布する。ブチル系セメント
に限らず、シール性があシ、加硫後金タイヤからはがれ
易いゴムセメントが使用できる。By attaching the precure tread 6 to the base tire in this way and placing the seal plate 3 along the top of the base tire, the self-tensioning effect of the rubber elasticity of the seal plate 3 causes the seal plate to
is in close contact with the base tire. Furthermore, in order to improve the tight seal between the base tire and the seal plate, butyl cement is applied to the surface of the seal plate that comes into contact with the base tire. In addition to butyl cement, rubber cement that has poor sealing properties and is easy to peel off from the gold tire after vulcanization can be used.
ところで、第９ｂ図において、シール板３の更生面に面
して形成されている空隙１０は、爾後の加硫工程におい
て流動硬化するクッションゴム９によって充填され、こ
の例ではグツジョンゴム９がトレッド部と台タイヤの両
方にまたがって硬化し一体化することができる。By the way, in FIG. 9b, the void 10 formed facing the rehabilitated surface of the seal plate 3 is filled with cushion rubber 9 which is fluidized and hardened in the subsequent vulcanization process. It can be cured and integrated across both base tires.
準備されたプレキュアトレッドと台タイヤの組立体は、
加硫缶内に入れられ加硫されるが、加硫後シール板３は
取り除かれる。上記切込み７からシール板は取り除かれ
得るし、ナイフ等の切除手段によって取り除き得る。さ
らに、トリミングてよυ不要ゴムを切υ取り、更生面を
美しくすることができる。The prepared precure tread and stand tire assembly is
It is placed in a vulcanizer and vulcanized, but the seal plate 3 is removed after vulcanization. The sealing plate can be removed from the cut 7 and can be removed by cutting means such as a knife. Furthermore, by trimming, unnecessary rubber can be removed to make the rehabilitated surface more beautiful.
本発明の加硫缶による加硫方式には、第１０図もしくは
第１１図で示した従来のリム、チューブ使用もしくはエ
アバック使用の各方式等が採用できるものである。For the vulcanization method using a vulcanizer according to the present invention, the conventional rim, tube or air bag methods shown in FIG. 10 or 11 can be adopted.
（発明の効果）
本発明の更生タイヤ用リング状プレキーアトレッド及び
タイヤ更生方法によれば、構造簡単で、作業性良く、高
品質の更生タイヤを製造することができる。(Effects of the Invention) According to the ring-shaped pre-keyed tread for a retreaded tire and the tire retreading method of the present invention, a retreaded tire with a simple structure, good workability, and high quality can be manufactured.
第１図、第３図及び第５図は、本発明の更生りイヤ用リ
ング状プレキュアトレッドの実施例を示す各断面図、第
２図、第４図及び第６図は、各々第１図、第３図及び第
５図のプレキュアトレッドのショルダー部からシール板
を示す一部拡大断面図、第７ａ図〜第７ｃ図は本発明の
プレキュアトレッドの他の実施例を示す断面図、第８ａ
図〜第８ｃ図は本発明のプレキュアトレッドの一部拡大
断面図、第９ａ図及び第９ｂ図は本発明のプレキュアト
レッドによる台タイヤの被覆状態を示す断面図、そして
第１０図及び第１１図は従来のプレキュアトレッドと更
生方法を示す各断面図である。
１・・・トレッド部、２・・・ショルダー部、３・・・
シール板、４・・・接合部、６・・・本発明のグレキュ
アトレッ ド 。
第３囚
第７ａ囚
第７ｂ図
第７Ｃ囚
第９ａ因
第９ｂ図
第１０囚
第１１図
手 続 補 正 書
昭和６３年 ４月１ｊ 口1, 3 and 5 are cross-sectional views showing embodiments of the ring-shaped precure tread for retreaded ears of the present invention, and FIGS. Figures 3 and 5 are partially enlarged sectional views showing the seal plate from the shoulder portion of the precure tread, and Figures 7a to 7c are sectional views showing other embodiments of the precure tread of the present invention. , No. 8a
Figures 8c to 8c are partially enlarged sectional views of the precure tread of the present invention, Figures 9a and 9b are sectional views showing how the base tire is covered with the precure tread of the present invention, and Figures 10 and 8c are FIG. 11 is a cross-sectional view showing a conventional precure tread and a retreading method. 1...Tread part, 2...Shoulder part, 3...
Seal plate, 4... Joint portion, 6... Grecure tread of the present invention. Prisoner 3, Prisoner 7a, Figure 7b, Prisoner 7C, Cause 9a, Figure 9b, Prisoner 10, Figure 11 Procedures Amendment April 1, 1988
Claims (2)
ール板が接合部を介して取り付けられリング状に加硫さ
れてなる更生タイヤ用リング状プレキュアトレッド。(1) A ring-shaped precure tread for a retreaded tire, in which a tread portion and a seal plate are attached to the shoulder portions of the tread portion via joints and vulcanized into a ring shape.
状プレキュアトレッドを台タイヤとの間にクッションゴ
ムを介装させて貼り付け、シール板にてプレキュアトレ
ッドと台タイヤとが加硫一体化される更生面を気密性を
保持して被覆し、加硫する工程を経た後にシール板を取
り除いてなるタイヤ更生方法。(2) A ring-shaped precure tread with a seal plate attached via the joint is pasted to the base tire with a cushion rubber interposed between them, and the precure tread and base tire are vulcanized by the seal plate. A tire retreading method in which the retreaded surface to be integrated is coated while maintaining airtightness, and the seal plate is removed after a vulcanization process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249412A JPS63295243A (en) | 1986-10-22 | 1986-10-22 | Ring-shaped precured tread for regenerated tire and tire regenerating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249412A JPS63295243A (en) | 1986-10-22 | 1986-10-22 | Ring-shaped precured tread for regenerated tire and tire regenerating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63295243A true JPS63295243A (en) | 1988-12-01 |
Family
ID=17192589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61249412A Pending JPS63295243A (en) | 1986-10-22 | 1986-10-22 | Ring-shaped precured tread for regenerated tire and tire regenerating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63295243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0709237A2 (en) | 1994-10-24 | 1996-05-01 | The Goodyear Tire & Rubber Company | A tread for truck tires |
-
1986
- 1986-10-22 JP JP61249412A patent/JPS63295243A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0709237A2 (en) | 1994-10-24 | 1996-05-01 | The Goodyear Tire & Rubber Company | A tread for truck tires |
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