WO2005087515A1 - 空気入りタイヤ - Google Patents
空気入りタイヤ Download PDFInfo
- Publication number
- WO2005087515A1 WO2005087515A1 PCT/JP2005/003956 JP2005003956W WO2005087515A1 WO 2005087515 A1 WO2005087515 A1 WO 2005087515A1 JP 2005003956 W JP2005003956 W JP 2005003956W WO 2005087515 A1 WO2005087515 A1 WO 2005087515A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- porous material
- pneumatic tire
- compressed
- circumferential direction
- cross
- Prior art date
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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
-
- 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
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/003—Balancing means attached to the tyre
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10036—Cushion and pneumatic combined
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10495—Pneumatic tire or inner tube
Definitions
- the present invention relates to a pneumatic tire in which cavity resonance noise is reduced by using a ring-shaped object whose cross-sectional area is changed according to a position in a tire circumferential direction, and more specifically, a weight in a tire circumferential direction.
- the present invention relates to a pneumatic tire capable of making the balance uniform.
- One of the causes of noise in pneumatic tires is cavity resonance due to vibration of air filled in the tires. This cavity resonance sound is generated when the tire is rolled, the tread vibrates due to unevenness of the road surface, and the vibration of the tread vibrates the air inside the tire.
- Patent Document 1 JP 2001-113902A
- Patent Document 2 Japanese Patent Laid-Open No. 2003-226104
- the pneumatic tire according to the present invention for achieving the above object has a function corresponding to a position in the tire circumferential direction.
- a pneumatic tire where the annular object with varying cross-sectional area attached to the inner surface of the tread portion, a porous material having a density that have a 5- 70kgZm 3 is a uniformly cross-section along the tire circumferential direction
- the ring-shaped object is formed by partially compressing.
- the density is 5 to 70 kgZm 3 and the A porous material having a uniform cross-sectional shape is used, and this porous material is partially compressed to form a ring-shaped object having a changed cross-sectional area. Therefore, if the mass per unit length in the tire circumferential direction of the porous material is made constant in advance, it is possible to give a desired cross-sectional area change to the porous material while making the weight balance in the tire circumferential direction uniform. Will be possible.
- means for compressing the porous material is not particularly limited.
- a constraining member for maintaining a compressed state is added to the compressed portion of the porous material, the compressed portion of the porous material is formed by heat melting, and the compressed portion of the porous material is formed by hot pressing. It is possible.
- compression kneading by hot pressing has high processing accuracy and can be processed in a short time.
- the variation range of the mass of the porous material per unit length in the tire circumferential direction is 0 to 2%.
- the variation width of the mass of the porous material per unit length in the tire circumferential direction is reduced.
- the difference between the maximum value Smax and the minimum value Smin of the cross-sectional area of the porous material after compression processing is at least 10% of the cross-sectional area of the cavity formed between the tire and the rim of the wheel. Is preferred. As described above, by increasing the difference between the maximum value Smax and the minimum value Smin of the cross-sectional area of the porous material after the compression processing, the effect of reducing the cavity resonance is enhanced.
- the maximum value Tmax and the minimum value Tmin of the thickness of the porous material after compression are satisfying Tmax ⁇ 10mm and Tmin ⁇ lmm.
- Tmax ⁇ 10 mm the effect of reducing cavity resonance noise is enhanced, and by satisfying Tmin ⁇ lmm, the optimal elasticity for maintaining the shape of the ring-shaped object made of porous material along the inner surface of the tire Can be obtained.
- FIG. 1 is a meridional sectional view showing a pneumatic tire according to an embodiment of the present invention.
- FIG. 2 is a side view showing a ring-shaped object according to the present invention.
- FIG. 3 is a perspective view showing a porous material according to the present invention.
- FIG. 4 is a side view showing an example of a method for compressing a porous material by hot pressing.
- FIG. 5 is a side view showing another example of a method for compressing a porous material by hot pressing.
- FIG. 6 is a plan view showing an example of a porous material compressed by a hot press.
- FIG. 7 is a plan view showing another example of a porous material compressed by a hot press.
- FIG. 1 shows a pneumatic tire that also serves as an embodiment of the present invention
- FIG. 2 shows a ring-shaped object of the present invention
- FIG. 3 shows a porous material of the present invention
- the pneumatic tire T includes a tread portion 1, a pair of left and right bead portions 2, and a sidewall portion 3 connecting the tread portion 1 and the bead portion 2 to each other.
- the wheel W is composed of a rim 11 for mounting the bead portions 2 and 2 of the tire T, and a disk 12 connecting the rim 11 and an axle (not shown).
- a cavity 4 is formed between the tire T and the wheel W.
- the inner surface of the tread portion 1 has a cross section corresponding to a position in the tire circumferential direction.
- a ring-shaped object 5 with a different product is mounted.
- the ring-shaped object 5 repeatedly increases and decreases its cross-sectional area every 1Z4 cycles, for example.
- the resonance frequency changes with the rotation of the tire T, and the time for resonating at a single resonance frequency is shortened, so that cavity resonance can be reduced.
- the ring-shaped object 5 is obtained by partially compressing the porous material 6 as shown in FIG.
- the porous material 6 as a starting material has a uniform cross-sectional shape along the tire circumferential direction as shown by a broken line.
- the longitudinal direction of the porous material 6 corresponds to the tire circumferential direction in FIG.
- the porous material 6 having a uniform cross-sectional shape is partially compressed by appropriate processing means, so that the porous material 6 has compressed portions 6a and uncompressed portions 6b alternately along the tire circumferential direction. It is formed.
- the mass per unit length in the tire circumferential direction of the porous material 6 as the starting material is fixed in advance, the desired breakage of the porous material 6 can be achieved while the weight balance in the tire circumferential direction is made uniform. An area change can be given.
- the ring-shaped object 5 When manufacturing the ring-shaped object 5, a single kind of porous material 6 is used, and the porous material 6 is simply joined in a ring shape after compression, so that the manufacturing cost is kept low. be able to. Further, the durability of the ring-shaped object 5 can be improved because the number of the joints of the porous material 6 is small.
- the porous material 6, the density (apparent density) is 5- 70kgZm 3. If the density is less than 5 kgZm 3 , the shape stability of the object 5 mounted on the inner surface of the tread portion 1 decreases, and if it exceeds 70 kg / m 3 , it causes a weight increase.
- a resin foam can be used, and particularly, a foamed polyurethane foam is preferably used.
- the variation range of the mass of the porous material 6 per unit length in the tire circumferential direction is preferably 0 to 2%. If the fluctuation range of the mass exceeds 2%, it is difficult to make the weight balance uniform.
- the variation range of the mass can be determined by cutting the porous material 6 at intervals of 10 to 15 cm in the tire circumferential direction, measuring the mass of each cut piece, and dividing each mass by the length in the tire circumferential direction. When the mass per unit length is obtained, it is the ratio of the variation to the minimum value.
- the difference (Smax-Smin) between the maximum value Smax and the minimum value Smin of the cross-sectional area of the partially compressed porous material 6 is determined by the difference between the cavity 4 formed between the tire and the rim of the wheel.
- Cross section of It is good to be 10% or more of the above, more preferably 10-40%. If the difference (Smax-Smin) is less than 10% of the cross-sectional area of the cavity 4, the effect of reducing the cavity resonance is reduced.
- the cross-sectional area of the porous material 6 after the compression processing and the cross-sectional area of the hollow portion 4 are all cross-sectional areas in the tire meridian cross section.
- the rim referred to here is the standard rim specified in the ATMA Yearbook (2003 version).
- the maximum value Tmax and the minimum value Tmin of the thickness of the partially compressed porous material 6 satisfy Tmax ⁇ 10 mm and Tmin ⁇ 1 mm. If the maximum value Tmax is less than 10 mm, the effect of reducing the cavity resonance is reduced. However, if the maximum value Tmax exceeds 30 mm, it will be difficult to assemble the tire. Therefore, it is desirable to satisfy 10mm ⁇ Tmax ⁇ 30mm. On the other hand, if the minimum Tmin force is less than lmm, it becomes difficult to obtain the optimal elasticity for maintaining the shape of the ring-shaped object 5 made of the porous material 6 along the inner surface of the tire.
- the upper limit of the minimum value Tmin is preferably 5 mm. Therefore, it is desirable to satisfy lmm ⁇ Tmin ⁇ 5mm.
- FIG. 4 and FIG. 5 each show a method of compressing a porous material by hot pressing.
- the compressed portion 6a of the porous material 6 is formed by hot pressing. That is, the compressed part 6a is formed by pressing the heated press mold 21 against a part of the porous material 6 having a uniform cross-sectional shape along the tire circumferential direction.
- the conditions of the hot press depend on the material of the porous material 6, but may be, for example, a temperature of 100 to 170 ° C and a press time of about 5 to 120 seconds. Also, as shown in FIG. 5, when the corner of the press mold 21 is not a right angle but an oblique angle, the stress concentration at the boundary between the compressed part 6a and the non-compressed part 6b formed by the angle is gradually reduced. be able to.
- FIG. 6 and FIG. 7 each show a state in which a porous material compressed by a hot press is viewed from above.
- the compressed portion 6a and the non-compressed portion 6b are processed into a rectangular shape.
- the compressed portion 6a and the non-compressed portion 6b are machined into a parallelogram.
- the durability of the ring-shaped object 5 made of the porous material 6 can be improved.
- the above-described hot press by hot pressing has high processing accuracy and can be processed in a short time.
- a part of the porous material can be compressed, sewn with a machine in the compressed state, or fastened with a stable or the like.
- a restraining member titanium-tipped
- a part of the porous material may be thermally melted using a heat source such as hot air, infrared rays, a hot iron plate, high-temperature steam, or the like. That is, the compressed portion of the porous material may be formed by heat melting.
- a pneumatic tire having a tire size of 215Z60R16 tires of a conventional example, an example, and a comparative example in which only the conditions of the hollow portion were different were manufactured.
- the tire of the example has a ring shape in which the cross-sectional area is changed by partially compressing a porous material (foamed polyurethane foam) having a density of 20 kgZm 3 and a uniform cross-sectional shape along the tire circumferential direction.
- An object (see Fig. 2) was constructed, and this ring-shaped object was attached to the inner surface of the tread.
- the difference between the maximum value Smax and the minimum value Smin of the cross-sectional area of the porous material is 16% of the cross-sectional area of the cavity, and the maximum value Tmax and the minimum value Tmin of the thickness of the porous material are 20 mm and 4.Omm, respectively. did.
- the tire of the comparative example is a ring-shaped object having substantially the same structure as that of the example attached to the inner surface of the tread portion.
- two types of porous materials are used. Ring-shaped objects were obtained by joining them one by one in the tire circumferential direction.
- each test tire was mounted on a rim size 16 ⁇ 16.5JJ wheel, mounted on a 3000 cc FR sedan with an air pressure of 210 kPa, and the peak level of cavity resonance (in-vehicle sound [dB]) was measured.
- the running distance until the ring-shaped object also including the porous material was broken was measured and used as an index of durability.
- the evaluation results are shown as an index with the mileage of the comparative example as 100. The larger the index value, the more resistant It means that the durability is excellent. Table 1 shows the results.
- the tires of the examples had less cavity resonance sound than the conventional example, and the porous material had better durability than the comparative example.
- the weight balance is uniform! / , by compressing a single kind of porous material to change the cross-sectional area of the ring-shaped object V, it goes without saying that the weight balance is uniform! / ,.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005000542.9T DE112005000542B4 (de) | 2004-03-12 | 2005-03-08 | Luftreifen |
US10/590,907 US7665495B2 (en) | 2004-03-12 | 2005-03-08 | Pneumatic tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004070255A JP4321766B2 (ja) | 2004-03-12 | 2004-03-12 | 空気入りタイヤ |
JP2004-070255 | 2004-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005087515A1 true WO2005087515A1 (ja) | 2005-09-22 |
Family
ID=34975436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/003956 WO2005087515A1 (ja) | 2004-03-12 | 2005-03-08 | 空気入りタイヤ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7665495B2 (ja) |
JP (1) | JP4321766B2 (ja) |
CN (1) | CN100484778C (ja) |
DE (1) | DE112005000542B4 (ja) |
WO (1) | WO2005087515A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007102279A1 (ja) * | 2006-03-09 | 2007-09-13 | The Yokohama Rubber Co., Ltd. | タイヤ騒音低減装置及び空気入りタイヤ |
WO2008038629A1 (fr) * | 2006-09-26 | 2008-04-03 | The Yokohama Rubber Co., Ltd. | Dispositif de réduction du bruit de pneu et pneu |
WO2008062673A1 (fr) * | 2006-11-21 | 2008-05-29 | Bridgestone Corporation | Assemblage pneu/jante et élément en mousse destiné à être utilisé dans celui-ci |
JP2009028919A (ja) * | 2007-07-24 | 2009-02-12 | Bridgestone Corp | 空気入りタイヤの製造方法及び空気入りタイヤ |
US8387670B2 (en) | 2006-09-26 | 2013-03-05 | The Yokohama Rubber Co., Ltd. | Tire noise reduction device and pneumatic tire |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007314122A (ja) * | 2006-05-29 | 2007-12-06 | Jtekt Corp | 電動パワーステアリング装置 |
JP2009214613A (ja) * | 2008-03-07 | 2009-09-24 | Bridgestone Corp | リムホイール |
DE202008009008U1 (de) * | 2008-07-03 | 2008-09-04 | Recticel N.V. | Fahrzeugreifen |
US20100071820A1 (en) * | 2008-09-24 | 2010-03-25 | Bridgestone Americas Tire Operations, Llc | Tire and noise reducer |
JP4992937B2 (ja) * | 2009-05-25 | 2012-08-08 | 横浜ゴム株式会社 | 空気入りタイヤ |
JP5569166B2 (ja) * | 2010-06-14 | 2014-08-13 | 横浜ゴム株式会社 | タイヤ騒音低減装置およびそれを備えた空気入りタイヤ |
US8726955B2 (en) | 2010-11-09 | 2014-05-20 | The Goodyear Tire & Rubber Company | Self-balancing pneumatic tire and method of making the same |
FR2991686B1 (fr) | 2012-06-08 | 2015-05-01 | Michelin & Cie | Bandage pneumatique dont la paroi interne est pourvue d'une couche de mousse polyurethane specifique |
EP2962875B1 (en) | 2014-07-04 | 2017-03-29 | Compagnie Generale Des Etablissements Michelin | System for placement of foam ring onto an interior tire surface |
EP3192669B1 (en) | 2014-09-12 | 2019-10-02 | Bridgestone Corporation | Pneumatic tire |
US20200009912A1 (en) * | 2016-06-28 | 2020-01-09 | Bridgestone Americas Tire Operations, Llc | Methods for treating inner liners, inner liners resulting therefrom and tires containing such inner liners |
US11760136B2 (en) | 2018-05-15 | 2023-09-19 | Bridgestone Americas Tire Operations, Llc | Tire with multi-layer insert |
CN110949068A (zh) * | 2019-12-18 | 2020-04-03 | 山东玲珑轮胎股份有限公司 | 一种提高高速均匀性和动平衡的轮胎及其加工方法 |
Citations (5)
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JPS62216803A (ja) * | 1986-03-17 | 1987-09-24 | Bridgestone Corp | タイヤ共鳴阻止材 |
WO2002085648A1 (en) * | 2001-04-19 | 2002-10-31 | Societe De Technologie Michelin | Device for attenuating cavity noise in a tire and wheel |
JP2003226104A (ja) * | 2002-02-05 | 2003-08-12 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ及びタイヤ空洞共鳴抑制装置 |
JP2004276809A (ja) * | 2003-03-17 | 2004-10-07 | Honda Motor Co Ltd | 車両用車輪 |
JP2004291905A (ja) * | 2003-03-28 | 2004-10-21 | Honda Motor Co Ltd | 車両用車輪 |
Family Cites Families (6)
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US565451A (en) * | 1896-08-11 | Bicycle-tire | ||
JP3695255B2 (ja) * | 1999-10-15 | 2005-09-14 | 三菱自動車工業株式会社 | 車両の車輪構造 |
JP4367598B2 (ja) * | 2000-12-11 | 2009-11-18 | 横浜ゴム株式会社 | タイヤ/ホイール組み立て体 |
EP1253025B1 (en) * | 2001-04-16 | 2006-02-08 | Sumitomo Rubber Industries Ltd. | Tire noise reducing system |
US7013940B2 (en) | 2001-04-19 | 2006-03-21 | Michelin Recherche Et Technique S.A. | Device for attenuating cavity noise in a tire and wheel |
JP4360464B2 (ja) * | 2003-09-02 | 2009-11-11 | 横浜ゴム株式会社 | 空気入りタイヤ |
-
2004
- 2004-03-12 JP JP2004070255A patent/JP4321766B2/ja not_active Expired - Lifetime
-
2005
- 2005-03-08 US US10/590,907 patent/US7665495B2/en active Active
- 2005-03-08 WO PCT/JP2005/003956 patent/WO2005087515A1/ja active Application Filing
- 2005-03-08 DE DE112005000542.9T patent/DE112005000542B4/de active Active
- 2005-03-08 CN CNB2005800078363A patent/CN100484778C/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS62216803A (ja) * | 1986-03-17 | 1987-09-24 | Bridgestone Corp | タイヤ共鳴阻止材 |
WO2002085648A1 (en) * | 2001-04-19 | 2002-10-31 | Societe De Technologie Michelin | Device for attenuating cavity noise in a tire and wheel |
JP2003226104A (ja) * | 2002-02-05 | 2003-08-12 | Yokohama Rubber Co Ltd:The | 空気入りタイヤ及びタイヤ空洞共鳴抑制装置 |
JP2004276809A (ja) * | 2003-03-17 | 2004-10-07 | Honda Motor Co Ltd | 車両用車輪 |
JP2004291905A (ja) * | 2003-03-28 | 2004-10-21 | Honda Motor Co Ltd | 車両用車輪 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007102279A1 (ja) * | 2006-03-09 | 2007-09-13 | The Yokohama Rubber Co., Ltd. | タイヤ騒音低減装置及び空気入りタイヤ |
JP2007237962A (ja) * | 2006-03-09 | 2007-09-20 | Yokohama Rubber Co Ltd:The | タイヤ騒音低減装置及び空気入りタイヤ |
JP4522958B2 (ja) * | 2006-03-09 | 2010-08-11 | 横浜ゴム株式会社 | タイヤ騒音低減装置及び空気入りタイヤ |
WO2008038629A1 (fr) * | 2006-09-26 | 2008-04-03 | The Yokohama Rubber Co., Ltd. | Dispositif de réduction du bruit de pneu et pneu |
JPWO2008038629A1 (ja) * | 2006-09-26 | 2010-01-28 | 横浜ゴム株式会社 | タイヤ騒音低減装置及び空気入りタイヤ |
US8365782B2 (en) | 2006-09-26 | 2013-02-05 | The Yokohama Rubber Co., Ltd. | Tire noise reduction device and pneumatic tire |
US8387670B2 (en) | 2006-09-26 | 2013-03-05 | The Yokohama Rubber Co., Ltd. | Tire noise reduction device and pneumatic tire |
WO2008062673A1 (fr) * | 2006-11-21 | 2008-05-29 | Bridgestone Corporation | Assemblage pneu/jante et élément en mousse destiné à être utilisé dans celui-ci |
US8220515B2 (en) | 2006-11-21 | 2012-07-17 | Bridgestone Corporation | Tire-rim assembly and sponge member used in the same |
JP5078907B2 (ja) * | 2006-11-21 | 2012-11-21 | 株式会社ブリヂストン | タイヤとリムとの組立体及びそれに用いられるスポンジ材 |
JP2009028919A (ja) * | 2007-07-24 | 2009-02-12 | Bridgestone Corp | 空気入りタイヤの製造方法及び空気入りタイヤ |
Also Published As
Publication number | Publication date |
---|---|
US20070175559A1 (en) | 2007-08-02 |
JP2005255015A (ja) | 2005-09-22 |
DE112005000542B4 (de) | 2018-01-25 |
DE112005000542T5 (de) | 2007-01-25 |
JP4321766B2 (ja) | 2009-08-26 |
CN100484778C (zh) | 2009-05-06 |
CN1930008A (zh) | 2007-03-14 |
US7665495B2 (en) | 2010-02-23 |
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