WO2007071284A1 - Pneumatic tire having an asymmetric tread profile - Google Patents
Pneumatic tire having an asymmetric tread profile Download PDFInfo
- Publication number
- WO2007071284A1 WO2007071284A1 PCT/EP2005/056974 EP2005056974W WO2007071284A1 WO 2007071284 A1 WO2007071284 A1 WO 2007071284A1 EP 2005056974 W EP2005056974 W EP 2005056974W WO 2007071284 A1 WO2007071284 A1 WO 2007071284A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tire
- void
- solid ratio
- tread
- tread portion
- Prior art date
Links
- 239000011800 void material Substances 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 34
- 239000011324 bead Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 description 12
- 230000001133 acceleration Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B60C11/0083—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the curvature of the tyre tread
-
- 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
- B60C3/00—Tyres characterised by the transverse section
- B60C3/06—Tyres characterised by the transverse section asymmetric
-
- 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
-
- 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
- B60C11/0327—Tread patterns characterised by special properties of the tread pattern
- B60C11/033—Tread patterns characterised by special properties of the tread pattern by the void or net-to-gross ratios of the patterns
-
- 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
- Y10T152/10504—Asymmetric tire
Definitions
- the present invention relates to a pneumatic tire, particularly to a high or ultra high performance pneumatic tire, having an asymmetric tread profile.
- a pneumatic tire generally comprises: a torodial carcass structure comprising at least one carcass ply; a tread band in a position radially external to the carcass structure; a belt structure interposed between the carcass structure and the tread band; a pair of sidewalls applied to the carcass structure in axially opposite positions.
- the ends of the at least one carcass ply are associated to respective annular reinforcing elements so as to form tire beads, which secure the tire to a wheel rim.
- a tire has a symmetric tread profile, i.e. the tread profile, considered in a cross-section lying on a tire radial plane, has a symmetric shape with respect to the equatorial plane of the tire.
- asymmetric tread profiles have been proposed in the art.
- EP 0 755 808 B1 discloses a pneumatic tire comprising a carcass extending around the tire from bead to bead, sidewalls and a rubber tread region which has a profile when considered in transverse cross section of a new tire terminating the sides of the tread in inner and outer shoulder regions respectively, each said shoulder region having a shoulder drop, which is the distance in the radially inward direction from the point of maximum tire diameter to a shoulder point at the edge of the shoulder region, characterized in that when the tire is mounted on a scheduled wheel rim and inflated to a scheduled pressure, the tread region is asymmetric having its said point of maximum tire diameter offset in the axial direction of the tire from the center line of the tire section in the direction of the inner shoulder, and the shoulder drop of the outer shoulder is greater than the shoulder drop of the inner shoulder such that the tread region has an asymmetrical profile.
- EP 0 820 884 B1 discloses a pneumatic radial tire comprising a carcass extending around the tire from bead to bead, sidewalls and a rubber tread region which has a profile when considered in transverse cross section of a new tire terminating at the sides of the tread in inner and outer shoulder regions respectively, each said shoulder region having a shoulder drop, which is the distance in the radially inward direction from the point of maximum tire diameter to a shoulder point at the edge of the shoulder region, such that when the tire is mounted on a scheduled wheel rim and inflated to a scheduled pressure, the tread region is asymmetric having its said point of maximum tire diameter offset in the axial direction of the tire from the center line of the tire section in the direction of the inner shoulder, and the shoulder drop of the outer shoulder is greater than the shoulder drop of the inner shoulder such that the tread region has an asymmetrical profile, characterized by the tread region having substantially constant tread gauge or thickness except at the inner shoulder which has a locally reduced tread gauge or thickness so that the inner shoulder profile is trimmed
- US 2003/0121582 A1 discloses a pneumatic radial tire having a tire meridian cross-sectional configuration of a tread surface portion on at least one side of the tire center line which is arranged such that, when a position A is an intersection of the tire center line and the tread surface, and when a position B is an intersection of a straight line P drawn orthogonal to the tire axis from an edge of an innermost belt layer and the tread surface, an angle ⁇ between a straight line X connecting the positions A and B and a straight line Y drawn perpendicular to the tire center line from the position A is set in a range of 8 to 10 degrees, when the pneumatic radial tire is attached to a standard rim specified in JATMA with its air pressure being 180 kPa and with no load applied thereto.
- EP is the plane perpendicular to the tire rotational axis and containing the axial centerline of the tire;
- camber angle is the smallest angle defined, for a tire mounted on a vehicle rim, by rotating the equatorial plane of tire until overlapping the plane perpendicular to the ground and passing through the tire center; the camber angle is said to be “negative” when the upper portion of the tire mounted on the rim is inclined inwardly (i.e. toward the vehicle);
- rim width is the smallest internal distance, measured parallelly to the rim rotational axis, between the portions (flanges) of the rim on which the tire is mounted;
- inner tread portion is the portion of the tread extending from the equatorial plane to the tire shoulder positioned inwardly with respect to the vehicle when the tire is mounted on the vehicle rim;
- outer tread portion is the portion of the tread extending from the equatorial plane to the tire shoulder positioned outwardly with respect to the vehicle when the tire is mounted on the vehicle rim;
- inner shoulder drop SD in is the shoulder drop of the inner tread portion;
- shoulder drop difference is the difference between the outer shoulder drop and the inner shoulder drop:
- ⁇ SD is zero for a symmetrical tread profile and is different from zero for an asymmetrical tread profile
- V/S is the ratio between the free volume in the tread band (i.e. the volume of grooves, sipes and other carvings forming the tread pattern) and the volume occupied by the rubber material in the tread band, namely:
- V/S ' void _ " void
- V rubber " tread ⁇ " void wherein: V VO i d is the void volume in the tread band occupied by the tread pattern carvings (grooves, sipes, notches and the like);
- Vrubber is the volume in the tread band occupied by the rubber material
- V t r ead is the total volume of the tread band (the volumes are calculated with respect to the lower surface of the tread band in contact with the underlying belts and the upper surface of the tread band obtained by connecting the tread pattern protrusions coming into contact with the ground - blocks, ribs and the like - to form a slick surface, i.e. without taking into account the tread pattern carvings); the void/solid ratio can be determined for the whole tread band or for a portion thereof.
- “inner void/solid ratio" (V/S)i n is the ratio between the free volume in the inner tread portion (i.e. the volume of grooves, sipes and other carvings forming the inner tread pattern) and the volume occupied by the rubber material in the inner tread portion;
- V/S outer void/solid ratio
- the Applicant has felt the need of increasing the performance of high performance (HP) and ultra high performance (UHP) tires, these tires being designed for high-powered cars.
- HP high performance
- UHP ultra high performance
- the Applicant has felt the need of improving the performance of such tires both in terms of handling and in terms of aquaplaning, especially aquaplaning along bends.
- This performance should be improved at relatively low speeds (i.e. not higher than 150 km/h) and substantially maintained at relatively high speeds (i.e. higher than 150 km/h) and/or in extreme driving conditions, which are often reached when high-powered cars are tested or used.
- 4.5° to +4.5° may cause an uneven wear of the tread band, especially when running at relatively low speeds on a straight road.
- the Applicant has found that handling and aquaplaning performance is remarkably improved even at high operating speeds without negatively affecting the wear resistance of the tread band, by providing the tire with a combination of an asymmetric tread profile having a shoulder drop difference ( ⁇ SD) of from 0.3 to 0.9; and an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio
- V/S in and the outer void/solid ratio (V/S) out of from 1.1 to 1.50.
- the present invention relates to a pneumatic tire comprising: a toroidal carcass structure comprising at least one carcass ply, said carcass structure comprising a crown portion and two axially opposite side portions, each associated to a respective bead structure for mounting the tire on a rim; a tread band in a position radially external to the carcass structure; a belt structure interposed between the carcass structure and the tread band; a pair of sidewalls applied to the carcass structure in axially opposite positions; wherein said tire has an equatorial plane which divides the tread band into an inner tread portion and an outer tread portion, the inner tread portion being positioned inwardly and the outer tread portion being positioned outwardly when the tire is mounted on the rim; wherein the inner tread portion has an inner shoulder drop SD in and the outer tread portion has an outer shoulder drop SD 0Ut , each shoulder drop being measured as the difference between the length of the maximum tire radius R ma ⁇ and the length of the tire radius at a
- FIG. 1 schematically shows a cross-section of a tire according to the present invention with an asymmetric tread profile.
- a tire 1 conventionally comprises a torodial carcass structure 2, which comprises a crown portion and two axially opposite side portions, each associated to a respective bead structure for mounting the tire on a rim.
- Each bead structure usually comprises a bead wire 4 and a bead filler 3 and is associated to the carcass structure by folding back the opposite lateral edges of the carcass ply 2 around the bead wires so as to form the so-called carcass back-folds as shown in Fig. 1.
- each bead structure is formed by at least two annular inserts formed from metal cords arranged in concentric coils, and the carcass ply is not back- folded around said annular inserts.
- a tread band 5 is circumferentially applied in a position radially external to the crown portion of the carcass structure 2.
- the tire 1 further comprises a belt structure interposed between the carcass structure and the tread band.
- the belt structure comprises two belt layers 61 , 62 which incorporate a plurality of reinforcing cords (not shown), typically metal cords, which are parallel to each other in each layer and crossed with respect to the adjacent layer in opposite directions, so as to form a predetermined angle relative to the equatorial plane.
- a zero-degree reinforcing layer 63 is applied, which generally incorporates a plurality of reinforcing cords (not shown), typically textile cords, arranged at an angle of a few degrees relative to the equatorial plane EP.
- the inner structure of the tire according to the invention comprising said carcass structure and said belt structure, is symmetric with respect to the equatorial plane EP.
- Sidewalls 7 are also applied externally onto each axially opposite side portion of the carcass structure, each of these sidewalls extending from the respective bead structure to the edge of the tread band 5.
- the tire 1 according to the invention is of the type with a markedly flattened section.
- the tire of the invention has a H/C ratio, of the height of the right cross-section to the maximum width of the section, ranging between 0.20 and 0,80.
- the tire of the present invention is a tire having very low cross-section, e.g. with a ratio H/C of between 0.20 and 0.65, preferably from 0.25 to 0.45.
- the shoulder drops SD in , SD 0Ut for the inner tread portion and the outer tread portion have been shown enlarged (not in scale).
- the shoulder drop difference ⁇ SD is from 0.30 mm to 1.30 mm, preferably from 0.40 mm to 1.20 mm, even more preferably from 0.60 mm to 1.10 mm.
- the shoulder drops SD in , SD 0Ut for the inner tread portion and the outer tread portion are determined on a tire mounted on a rim having a rim width as prescribed by the tire manufacturer, inflated at nominal inflation pressure and not subject to any load.
- a laser beam profile measurement device may be used to determine the shoulder drops SD in and SD 0Ut , e.g. those produced by Dr. Noll GmbH (Germany) or by Bytewise Measurement Systems Corp. (USA).
- the maximum tire radius length is a length of tire radius measured at the equatorial plane.
- shoulder drops are measured in a static condition, namely when the tire is not rotating.
- shoulder drops could be measured at a rotation speed lower than about 50 Km/h.
- the tire according to the present invention has an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio (V/S) in and the outer void/solid ratio (V/S) out of from 1.10 to 1.50, preferably from 1.20 to 1.45, even more preferably from 1.30 to 1.40.
- the inner void/solid ratio (V/S) in is of from 0.30 to 0.60, preferably from 0.35 to 0.55, even more preferably from 0.38 to 0.45.
- the outer void/solid ratio (V/S) o u t is of from 0.15 to 0.45, preferably from 0.20 to 0.40, even more preferably from 0.25 to 0.35.
- Tires (tires A) according to the present invention were manufactured.
- two first tires A having a size of 225/40 ZR 18, were mounted on two respective 8JX18 rims and inflated at 2.3 bar.
- Two second tires A having a size of 265/35 ZR 18 were mounted on respective 9JX18 rims and inflated at 2.7 bar.
- 225/40 ZR 18 were mounted on two respective 8JX18 rims and inflated at 2.3 bar.
- the two tires B having a size of 265/35 ZR 18 were mounted on respective 9JX18 rims and inflated at 2.7 bar.
- tire A invention
- tire B comparative
- ⁇ SD 0
- a car Porsche 996 was first equipped with the above described four tires A, than it was equipped with the above described four tires B and used for testing aquaplaning and handling performance.
- the two tires having a size of 225/40 ZR 18 were mounted on the front axle.
- the two tires having a size of 265/35 ZR 18 were mounted on the rear axle.
- the aquaplaning test around bends was carried out at a substantially constant speed along a road track with smooth and dry asphalt, having a bend with a constant radius (100 m) and with a final section flooded with a layer of water.
- the test was repeated at different speed values and for each test lateral acceleration was measured when running on the wet section by an accelerometer mounted on the car.
- the speed at a substantially null lateral acceleration is about 6.6% higher for the car equipped with tires A than for the car equipped with tires B;
- the integral of the curve (which is a measurement of the vehicle controllability during bending) is about 7.4% higher for the car equipped with tires A than for the car equipped with tires B.
- Table 1 sums up the test driver's score sheet for handling. The results of said tests are expressed as a score on an evaluation scale ranging from 0 to 10 representing the subjective opinion expressed by the test driver. The values reproduced in the following table represent a mean value between those obtained in several test sessions and given by different test drivers.
- the steering promptness is indicative of the ability of a vehicle to recover its straight direction when the vehicle steering is subject to small rotations in the right and left directions.
- the steering pull is indicative of the attitude of a vehicle to deviate from the straight direction, such an attitude being evaluated at a constant speed.
- the heading "steering pull”, for the purposes of the present invention further comprises “torque steer” which is indicative of the attitude of a vehicle to deviate from the straight direction, such an attitude being evaluated whilst the vehicle is accelerating.
- the maximum lateral force along a bend is indicative of the amount of power which could be exercised by a vehicle which is driving along a bend. In turn, it depends on the area of the contact patch of the tires which are more loaded when the vehicle is driving along a bend.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602005024322T DE602005024322D1 (en) | 2005-12-20 | 2005-12-20 | AIR TIRES WITH ASYMMETRIC LAYER PROFILE |
CN2005800523535A CN101341034B (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having asymmetric tire surface profile |
EP05823642A EP1963111B1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
BRPI0520786-0A BRPI0520786B1 (en) | 2005-12-20 | 2005-12-20 | PNEUMATIC |
JP2008546145A JP4866425B2 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire with asymmetric tread profile |
AU2005339419A AU2005339419A1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
PCT/EP2005/056974 WO2007071284A1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
AT05823642T ATE485176T1 (en) | 2005-12-20 | 2005-12-20 | AIR TIRE WITH ASYMMETRIC TREAD PROFILE |
US12/085,695 US8499806B2 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
KR1020087017436A KR101197195B1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic Tire Having An Asymmetric Tread Profile |
CA002633143A CA2633143A1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2005/056974 WO2007071284A1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007071284A1 true WO2007071284A1 (en) | 2007-06-28 |
Family
ID=36808991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/056974 WO2007071284A1 (en) | 2005-12-20 | 2005-12-20 | Pneumatic tire having an asymmetric tread profile |
Country Status (11)
Country | Link |
---|---|
US (1) | US8499806B2 (en) |
EP (1) | EP1963111B1 (en) |
JP (1) | JP4866425B2 (en) |
KR (1) | KR101197195B1 (en) |
CN (1) | CN101341034B (en) |
AT (1) | ATE485176T1 (en) |
AU (1) | AU2005339419A1 (en) |
BR (1) | BRPI0520786B1 (en) |
CA (1) | CA2633143A1 (en) |
DE (1) | DE602005024322D1 (en) |
WO (1) | WO2007071284A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2048005A1 (en) | 2007-10-11 | 2009-04-15 | Continental Aktiengesellschaft | Pneumatic tire for vehicles |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5593674B2 (en) * | 2009-10-21 | 2014-09-24 | 横浜ゴム株式会社 | Heavy duty pneumatic tire |
JP5887332B2 (en) * | 2011-02-24 | 2016-03-16 | 株式会社ブリヂストン | Pneumatic radial tire |
JP5887338B2 (en) * | 2011-03-04 | 2016-03-16 | 株式会社ブリヂストン | Pneumatic tire |
US9718310B2 (en) | 2012-04-10 | 2017-08-01 | Pirelli Tyre S.P.A. | Tyre for vehicle wheels |
WO2013190419A1 (en) * | 2012-06-22 | 2013-12-27 | Pirelli Tyre S.P.A. | Method for controlling the footprint area of a tyre and tyre for vehicle wheels |
WO2019244771A1 (en) * | 2018-06-18 | 2019-12-26 | 株式会社ブリヂストン | Pneumatic tyre |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09300906A (en) * | 1996-05-14 | 1997-11-25 | Toyo Tire & Rubber Co Ltd | Flat radial tire with asymmetric tread pattern provided in asymmetric profile |
EP0820884A2 (en) * | 1996-07-26 | 1998-01-28 | Sumitomo Rubber Industries Limited | Pneumatic tyre |
US6508284B1 (en) * | 1998-05-11 | 2003-01-21 | The Goodyear Tire & Rubber Company | Forming and mounting of an asymmetric race tire |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1448109A (en) * | 1965-06-01 | 1966-08-05 | Fr Du Pneu Englebert Soc | Oriented drift pneumatic jacket |
GB2178380B (en) * | 1985-06-21 | 1989-07-12 | Bridgestone Corp | Pneumatic tire |
JPS6341204A (en) * | 1986-08-06 | 1988-02-22 | Bridgestone Corp | Heavy duty pneumatic radial tire |
US5735979A (en) * | 1995-07-24 | 1998-04-07 | Dunlop Tire Corporation | Pneumatic tire with asymmetric tread profile |
DE69719771T2 (en) | 1997-12-30 | 2003-12-11 | Pirelli | Process for the production of pneumatic tires for vehicle wheels |
ES2208860T3 (en) | 1997-12-30 | 2004-06-16 | Pirelli Pneumatici Societa' Per Azioni | TIRE FOR VEHICLE WHEELS. |
JP2002514536A (en) * | 1998-05-11 | 2002-05-21 | ザ・グッドイヤー・タイヤ・アンド・ラバー・カンパニー | Molding and installation of asymmetric race tires |
JP4290897B2 (en) * | 2001-04-17 | 2009-07-08 | 東洋ゴム工業株式会社 | Pneumatic radial tire |
JP3723764B2 (en) * | 2001-11-27 | 2005-12-07 | 住友ゴム工業株式会社 | Pneumatic tire |
JP3864085B2 (en) * | 2001-12-27 | 2006-12-27 | 横浜ゴム株式会社 | Pneumatic radial tire |
JP4364557B2 (en) * | 2003-06-04 | 2009-11-18 | 東洋ゴム工業株式会社 | Pneumatic tire for passenger car and wheel assembly, and pneumatic tire for passenger car |
EP1712377A4 (en) * | 2004-01-16 | 2008-11-05 | Bridgestone Corp | Pneumatic tire |
-
2005
- 2005-12-20 DE DE602005024322T patent/DE602005024322D1/en active Active
- 2005-12-20 JP JP2008546145A patent/JP4866425B2/en active Active
- 2005-12-20 BR BRPI0520786-0A patent/BRPI0520786B1/en active IP Right Grant
- 2005-12-20 KR KR1020087017436A patent/KR101197195B1/en active IP Right Grant
- 2005-12-20 WO PCT/EP2005/056974 patent/WO2007071284A1/en active Application Filing
- 2005-12-20 US US12/085,695 patent/US8499806B2/en active Active
- 2005-12-20 EP EP05823642A patent/EP1963111B1/en active Active
- 2005-12-20 CN CN2005800523535A patent/CN101341034B/en active Active
- 2005-12-20 AT AT05823642T patent/ATE485176T1/en not_active IP Right Cessation
- 2005-12-20 CA CA002633143A patent/CA2633143A1/en not_active Abandoned
- 2005-12-20 AU AU2005339419A patent/AU2005339419A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09300906A (en) * | 1996-05-14 | 1997-11-25 | Toyo Tire & Rubber Co Ltd | Flat radial tire with asymmetric tread pattern provided in asymmetric profile |
EP0820884A2 (en) * | 1996-07-26 | 1998-01-28 | Sumitomo Rubber Industries Limited | Pneumatic tyre |
US6508284B1 (en) * | 1998-05-11 | 2003-01-21 | The Goodyear Tire & Rubber Company | Forming and mounting of an asymmetric race tire |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03 27 February 1998 (1998-02-27) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2048005A1 (en) | 2007-10-11 | 2009-04-15 | Continental Aktiengesellschaft | Pneumatic tire for vehicles |
Also Published As
Publication number | Publication date |
---|---|
BRPI0520786B1 (en) | 2019-04-24 |
CN101341034B (en) | 2010-05-12 |
DE602005024322D1 (en) | 2010-12-02 |
US8499806B2 (en) | 2013-08-06 |
AU2005339419A1 (en) | 2007-06-28 |
JP4866425B2 (en) | 2012-02-01 |
BRPI0520786A2 (en) | 2009-11-17 |
US20100294408A1 (en) | 2010-11-25 |
JP2009519856A (en) | 2009-05-21 |
KR101197195B1 (en) | 2012-11-02 |
CN101341034A (en) | 2009-01-07 |
EP1963111B1 (en) | 2010-10-20 |
ATE485176T1 (en) | 2010-11-15 |
CA2633143A1 (en) | 2007-06-28 |
EP1963111A1 (en) | 2008-09-03 |
KR20080080384A (en) | 2008-09-03 |
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