US20010054463A1 - Heavy duty tire - Google Patents
Heavy duty tire Download PDFInfo
- Publication number
- US20010054463A1 US20010054463A1 US09/467,485 US46748599A US2001054463A1 US 20010054463 A1 US20010054463 A1 US 20010054463A1 US 46748599 A US46748599 A US 46748599A US 2001054463 A1 US2001054463 A1 US 2001054463A1
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- United States
- Prior art keywords
- heavy duty
- narrow
- circumferential
- duty tire
- tire according
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Classifications
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- 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
- B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
-
- 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
- B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
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- 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
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/03—Slits in threads
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/902—Non-directional tread pattern having no circumferential rib and having blocks defined by circumferential grooves and transverse grooves
Definitions
- the present invention relates to a heavy duty tire having an improved tread structure capable of preventing uneven wear.
- tread patterns comprising blocks such as block pattern, rib-block pattern and the like are widely used in not only passenger car tires but also heavy duty tires such as pneumatic tires for trucks, buses and the like.
- each shoulder block In order to improve the shoulder wear, it has been proposed to subdivide each shoulder block into an axially outer narrow width part and an axially inner wide part by a narrow groove extending straight in the tire circumferential direction so as to concentrate the wear on the axially outer narrow width part.
- a heavy duty tire comprises
- each of the shoulder blocks provided with a circumferentially extending narrow groove
- the narrow groove subdividing the shoulder block into an axially inner wide main part and an axially outer narrow lateral part, wherein
- the narrow groove is curved convexly so that the narrow lateral part is narrower in a middle region than both circumferential end regions in the circumferential direction.
- the narrow groove has a width in the range of from 1.5 to 3.0 mm.
- the narrow lateral part has a minimum axial width in the range of from 5 to 8% of the average axial width of the shoulder block, and a maximum axial width in the range of from 7 to 12% of the average axial width.
- FIG. 1 is a developed view showing a tread pattern according to the present invention.
- FIG. 2 is a cross sectional view taken along a line A-A in FIG. 1.
- FIG. 3 is a plan view of a shoulder block showing an example of the narrow groove.
- FIG. 4 is a plan view of a shoulder block showing another example of the narrow groove.
- FIGS. 5 (A) and 5 (B) to FIGS. 7 (A) and 7 (B) are graphs showing test results.
- a heavy duty tire 1 is provided in the tread 2 with at least two circumferential grooves 3 extending continuously in the tire circumferential direction and axial grooves 4 extending therefrom to the tread edges E.
- the tire is a radial ply tire of size 11R22.5 for trucks and buses.
- the tread 2 has a single radius curvature TR as shown in FIG. 2.
- the circumferential grooves 3 include a pair of axially outermost grooves 3 c , a pair of axially inner grooves 3 b , and a central groove 3 a on the tire equator C.
- Each circumferential groove 3 is a zigzag groove. But various grooves, e.g. straight groove, wavy groove and the like can be used.
- the axial grooves 4 include axially outer grooves 4 c extending between the outermost circumferential grooves 3 c and tread edges E, axially inner grooves 4 a extending between the central circumferential groove 3 a and the inner circumferential grooves 3 b , and middle grooves 4 b extending between the inner circumferential grooves 3 b and outermost circumferential grooves 3 c.
- a block pattern made up of a plurality of blocks 5 is formed in the tread 2 .
- These blocks 5 are arranged in a plurality of circumferential rows including two rows R 1 of inner blocks 5 a between the axially inner grooves 3 b , two rows R 2 of middle blocks 5 b between the axially outermost grooves 3 c and the axially inner grooves 3 b , and two rows R 3 of shoulder blocks 5 c axially outside the axially outermost grooves 3 c.
- the circumferential grooves 3 and axial grooves 4 have a width of at least 2% of the tread width TW between the tread edges E.
- the tread width TW is the maximum axial width of the ground contacting area under a standard condition in which the tire is mounted on a standard rim and inflated to a standard load and then loaded with a standard load.
- the standard rim is the “standard rim” specified in JATMA, the “Measuring Rim” in ETRTO, the “Design Rim” in TRA or the like.
- the standard pressure is the “maximum air pressure” in JATMA, the “Inflation Pressure” in ETRTO, the maximum pressure given in the “Tire Load Limits at Various Cold Inflation Pressures” table in TRA or the like.
- the standard load is the “maximum load capacity” in JATMA, the “Load Capacity” in ETRTO, the maximum value given in the above-mentioned table in TRA or the like.
- Each of the shoulder blocks 5 c is provided with a narrow groove 9 , whereby the shoulder block 5 c is subdivided into an axially inner wide main part 6 and an axially outer narrow lateral part 7 .
- the narrow groove 9 has a width in the range of from 1.5 to 3.0 mm (in this embodiment about 2.0 mm) and a depth GD 1 in the range of not less than 30%, preferably 50 to 100%, more preferably 55 to 80% of the depth GD 2 of the axially outermost circumferential grooves 3 c . Both the circumferential ends thereof are opened to the outer axial grooves 4 c circumferentially adjacent to the shoulder blocks 5 c.
- FIG. 3 shows an example of the narrow groove 9 , wherein the narrow groove 9 comprises a central convex part 9 A and a pair of circumferential end parts 9 B.
- the convex part 9 A is curved convexly towards the axially outside, and the axially outermost point T (defined on the groove center line) lies in the middle range X of the circumferential length L of the block. Therefore, the narrow lateral part 7 has a narrow width part 10 in the middle range X and wide parts (hereinafter heel part 11 and toe part 12 ) in the circumferential ends.
- the middle range X is, as shown in FIG. 3, a 30% length range centered on the circumferential midpoint P.
- the convex part 9 A has a radius Rw of curvature (defined by the groove center line) in the range of from 0.8 to 2.0 times the average width of the shoulder block.
- the convex part 9 A has a circumferential length Lw not less than 50%, preferably not less than 60% of the circumferential length L of the narrow groove 9 (in this embodiment about 80%).
- the rigidity of the narrow lateral part 7 varies in the tire circumferential direction. Therefore, even if a large tangential force is applied to the top of the shoulder block 5 c when contacting or leaving the ground for example, excessive deformation and tear-off of the narrow lateral part 7 can be avoided because the wide heel part 11 and toe part 12 can resist such deformation and tear-off, and the narrow groove 9 can be closed to increase the apparent rigidity of the narrow lateral part 7 . Further, wear energy concentrates on the narrow lateral part 7 and wear energy to the main part 6 decreases and uneven wear as a whole is improved.
- the minimum axial width Wmin in the narrow part 10 is preferably set in the range of from 5 to 8% of the average axial width of the shoulder block 5 c.
- the wide heel part 11 and toe part 12 have a constant axial width W because the circumferential end parts 9 B of the narrow groove 9 and the axially outer edge E of the shoulder block 5 c are substantially parallel with the tire circumferential direction.
- FIG. 4 shows another example of the narrow groove 9 .
- the heel part 11 and toe part 12 have a variable axial width gradually increasing towards the respective circumferential ends,
- the circumferential end parts 9 B of the narrow groove 9 are oblique and preferably formed in a linear shape or slightly concavely curved shape.
- the axial width W of the narrow lateral part 7 measured at the circumferential ends is set in the range of from 7 to 12% of the above-mentioned average width of the shoulder block and more than the above-mentioned minimum width Wmin. If more than 12%, the wear energy to the main part 6 increases. If lass than 7%, the rigidity decreases and the above-mentioned effects can not be obtained.
- the above-mentioned narrow grooves 9 are provided on only the axially outermost shoulder blocks 5 c .
- Truck/bus radial tires of size 11R22.5 (Wheel rim: 22.5 ⁇ 7.50) having the same tread pattern shown in FIG. 1 except for the narrow grooves were made as test tires and tested for wear energy.
- Example tire was provided with the narrow grooves 9 shown in FIG. 1.
- Reference tire 1 was provided with straight narrow grooves instead of the curved narrow grooves 9 .
- Reference tire 2 was not provided with the narrow groove.
- Example tire was slightly increased in the average wear energy in comparison with Reference tire 1 , but the wear energy ratio was effectively reduced. Therefore, Example tire could be improved in the wear resistance in its entirety.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
A heavy duty tire comprises a pair of axially outermost circumferential rows of shoulder blocks, each of the shoulder blocks provided with a circumferentially extending narrow groove, the narrow groove subdividing the shoulder block into an axially inner wide main part and an axially outer narrow lateral part, and the narrow groove is curved convexly so that the narrow lateral part is narrower in a middle region than both the circumferential end regions, whereby the heel and toe wear and shoulder wear and resistance to tear-off can be improved.
Description
- The present invention relates to a heavy duty tire having an improved tread structure capable of preventing uneven wear.
- In recent years, tread patterns comprising blocks such as block pattern, rib-block pattern and the like are widely used in not only passenger car tires but also heavy duty tires such as pneumatic tires for trucks, buses and the like.
- In the heavy duty tires, the load of each block is relatively heavy, and accordingly uneven wear is very liable to occur. For example, uneven wear between axially outer part and inner part of a block caused by a difference in the rolling diameter of the tire is liable to occur in axially outer blocks such as shoulder blocks. This type of uneven wear is called shoulder wear. Uneven wear at the circumferential edges (heel and toe) of a block is called heel and toe wear, and this type of uneven wear occurs in every block, but the degree is higher in the axially outer blocks such as shoulder blocks.
- In order to improve the shoulder wear, it has been proposed to subdivide each shoulder block into an axially outer narrow width part and an axially inner wide part by a narrow groove extending straight in the tire circumferential direction so as to concentrate the wear on the axially outer narrow width part.
- In this proposition, however, the heel and toe wear can not be improved, and as the rigidity of the axially outer narrow width part is low, this part is liable to be torn off.
- Therefore, it is an object of the present invention to provide a heavy duty tire in which the heel and toe wear as well as shoulder wear is effectively improved and the resistance to tear-off is increased.
- According to the present invention, a heavy duty tire comprises
- a pair of axially outermost circumferential rows of shoulder blocks,
- each of the shoulder blocks provided with a circumferentially extending narrow groove,
- the narrow groove subdividing the shoulder block into an axially inner wide main part and an axially outer narrow lateral part, wherein
- the narrow groove is curved convexly so that the narrow lateral part is narrower in a middle region than both circumferential end regions in the circumferential direction.
- Preferably, the narrow groove has a width in the range of from 1.5 to 3.0 mm. The narrow lateral part has a minimum axial width in the range of from 5 to 8% of the average axial width of the shoulder block, and a maximum axial width in the range of from 7 to 12% of the average axial width.
- Embodiments of the present invention will now be described in detail in conjunction with the accompanying drawings.
- FIG. 1 is a developed view showing a tread pattern according to the present invention.
- FIG. 2 is a cross sectional view taken along a line A-A in FIG. 1.
- FIG. 3 is a plan view of a shoulder block showing an example of the narrow groove.
- FIG. 4 is a plan view of a shoulder block showing another example of the narrow groove.
- FIGS.5(A) and 5(B) to FIGS. 7(A) and 7(B) are graphs showing test results.
- According to the present invention, a
heavy duty tire 1 is provided in thetread 2 with at least twocircumferential grooves 3 extending continuously in the tire circumferential direction andaxial grooves 4 extending therefrom to the tread edges E. - In this embodiment, the tire is a radial ply tire of size 11R22.5 for trucks and buses. In a meridian section of the tire, the
tread 2 has a single radius curvature TR as shown in FIG. 2. - In FIG. 1, The
circumferential grooves 3 include a pair of axiallyoutermost grooves 3 c, a pair of axiallyinner grooves 3 b, and acentral groove 3 a on the tire equator C. Eachcircumferential groove 3 is a zigzag groove. But various grooves, e.g. straight groove, wavy groove and the like can be used. - The
axial grooves 4 include axiallyouter grooves 4 c extending between the outermostcircumferential grooves 3 c and tread edges E, axiallyinner grooves 4 a extending between the centralcircumferential groove 3 a and the innercircumferential grooves 3 b, andmiddle grooves 4 b extending between the innercircumferential grooves 3 b and outermostcircumferential grooves 3 c. - By the
circumferential grooves 3 andaxial grooves 4, a block pattern made up of a plurality ofblocks 5 is formed in thetread 2. Theseblocks 5 are arranged in a plurality of circumferential rows including two rows R1 ofinner blocks 5 a between the axiallyinner grooves 3 b, two rows R2 ofmiddle blocks 5 b between the axiallyoutermost grooves 3 c and the axiallyinner grooves 3 b, and two rows R3 ofshoulder blocks 5 c axially outside the axiallyoutermost grooves 3 c. - Preferably, the
circumferential grooves 3 andaxial grooves 4 have a width of at least 2% of the tread width TW between the tread edges E. - Here, the tread width TW is the maximum axial width of the ground contacting area under a standard condition in which the tire is mounted on a standard rim and inflated to a standard load and then loaded with a standard load. The standard rim is the “standard rim” specified in JATMA, the “Measuring Rim” in ETRTO, the “Design Rim” in TRA or the like. The standard pressure is the “maximum air pressure” in JATMA, the “Inflation Pressure” in ETRTO, the maximum pressure given in the “Tire Load Limits at Various Cold Inflation Pressures” table in TRA or the like. The standard load is the “maximum load capacity” in JATMA, the “Load Capacity” in ETRTO, the maximum value given in the above-mentioned table in TRA or the like.
- Each of the
shoulder blocks 5 c is provided with anarrow groove 9, whereby theshoulder block 5 c is subdivided into an axially inner widemain part 6 and an axially outer narrowlateral part 7. Thenarrow groove 9 has a width in the range of from 1.5 to 3.0 mm (in this embodiment about 2.0 mm) and a depth GD1 in the range of not less than 30%, preferably 50 to 100%, more preferably 55 to 80% of the depth GD2 of the axially outermostcircumferential grooves 3 c. Both the circumferential ends thereof are opened to the outeraxial grooves 4 c circumferentially adjacent to theshoulder blocks 5 c. - FIG. 3 shows an example of the
narrow groove 9, wherein thenarrow groove 9 comprises a centralconvex part 9A and a pair ofcircumferential end parts 9B. - The
convex part 9A is curved convexly towards the axially outside, and the axially outermost point T (defined on the groove center line) lies in the middle range X of the circumferential length L of the block. Therefore, the narrowlateral part 7 has anarrow width part 10 in the middle range X and wide parts (hereinafterheel part 11 and toe part 12) in the circumferential ends. Here, the middle range X is, as shown in FIG. 3, a 30% length range centered on the circumferential midpoint P. - Preferably, the convex
part 9A has a radius Rw of curvature (defined by the groove center line) in the range of from 0.8 to 2.0 times the average width of the shoulder block. - Further, the
convex part 9A has a circumferential length Lw not less than 50%, preferably not less than 60% of the circumferential length L of the narrow groove 9 (in this embodiment about 80%). - Accordingly, the rigidity of the narrow
lateral part 7 varies in the tire circumferential direction. Therefore, even if a large tangential force is applied to the top of theshoulder block 5 c when contacting or leaving the ground for example, excessive deformation and tear-off of the narrowlateral part 7 can be avoided because thewide heel part 11 andtoe part 12 can resist such deformation and tear-off, and thenarrow groove 9 can be closed to increase the apparent rigidity of the narrowlateral part 7. Further, wear energy concentrates on the narrowlateral part 7 and wear energy to themain part 6 decreases and uneven wear as a whole is improved. - If the minimum axial width Wmin in the
narrow part 10 is too small, such advantageous effects can not be obtained. Therefore, the minimum axial width Wmin is preferably set in the range of from 5 to 8% of the average axial width of theshoulder block 5 c. - In FIG. 3, the
wide heel part 11 andtoe part 12 have a constant axial width W because thecircumferential end parts 9B of thenarrow groove 9 and the axially outer edge E of theshoulder block 5 c are substantially parallel with the tire circumferential direction. - FIG. 4 shows another example of the
narrow groove 9. In this example, theheel part 11 andtoe part 12 have a variable axial width gradually increasing towards the respective circumferential ends, In this case, thecircumferential end parts 9B of thenarrow groove 9 are oblique and preferably formed in a linear shape or slightly concavely curved shape. - Preferably, the axial width W of the narrow
lateral part 7 measured at the circumferential ends (thus which is usually a maximum width) is set in the range of from 7 to 12% of the above-mentioned average width of the shoulder block and more than the above-mentioned minimum width Wmin. If more than 12%, the wear energy to themain part 6 increases. If lass than 7%, the rigidity decreases and the above-mentioned effects can not be obtained. - In the example shown in FIG. 1, the above-mentioned
narrow grooves 9 are provided on only the axiallyoutermost shoulder blocks 5 c. However, it is possible to further provide thenarrow grooves 9 on the second outermost blocks (in thisexample middle blocks 5 b) such that that the narrowlateral part 7 faces the outermostcircumferential groove 3 c. - Comparison Test
- Truck/bus radial tires of size 11R22.5 (Wheel rim: 22.5×7.50) having the same tread pattern shown in FIG. 1 except for the narrow grooves were made as test tires and tested for wear energy. Example tire was provided with the
narrow grooves 9 shown in FIG. 1.Reference tire 1 was provided with straight narrow grooves instead of the curvednarrow grooves 9.Reference tire 2 was not provided with the narrow groove. - Using a combination sensor capable of measuring a share stress and slip and their directions, the share stress and slip were measured at the heel and toe of various blocks (measuring points are indicated in FIG. 1 as {circle over (1)} to {circle over (12)}), and the wear energy was computed by multiplying these values. The test conditions are as follows:
- Slip angle: 0 and 1 degrees
- Inner pressure: 850 kPa
- The results are shown in FIGS.5(A)-5(B) to FIGS. 7(A)-7(B). From the test results, it was confirmed that the tire according to the present invention can be decreased in the difference in wear energy between the heel and toe and thus the wear energy can be evened in the circumferential direction.
- Further, the average of the wear energies at the above-mentioned twelve measuring points, and the ratio of the average of the wear energies at the six toe-side measuring points to the average of the wear energies at the six heel-side measuring points were computed. The results are shown in the following Table 1.
TABLE 1 Tire Ex. Ref.1 Ref.2 Average wear energy (J/sq.m) Slip angle 0 deg.295.9 278.7 326.2 Slip angle 1 deg.1011.4 1180.8 1081.6 Wear energy ratio 1.5 1.56 1.8 - Example tire was slightly increased in the average wear energy in comparison with
Reference tire 1, but the wear energy ratio was effectively reduced. Therefore, Example tire could be improved in the wear resistance in its entirety.
Claims (10)
1. A heavy duty tire comprising
a pair of axially outermost circumferential rows of shoulder blocks disposed in a tread,
each of the shoulder blocks provided with a circumferentially extending narrow groove,
the narrow groove subdividing the shoulder block into an axially inner wide main part and an axially outer narrow lateral part, and
the narrow groove curved convexly so that said narrow lateral part is narrower in a middle region than both circumferential end regions in the circumferential direction.
2. The heavy duty tire according to , wherein
claim 1
a minimum axial width of said narrow lateral part in the middle region is in the range of from 5 to 8% of the average axial width of the shoulder block.
3. The heavy duty tire according to , wherein
claim 1
said narrow lateral part has a minimum axial width in the range of from 5 to 8% of the average axial width of the shoulder block, and a maximum axial width in the range of from 7 to 12% of the average axial width.
4. The heavy duty tire according to , or 3, wherein
claim 1
2
the narrow groove comprises a central convexly curved part and a pair of circumferential end parts, and
the circumferential end parts are substantially straight.
5. The heavy duty tire according to , or 3, wherein
claim 1
2
the narrow groove comprises a central convexly curved part and a pair of circumferential end parts, and
the circumferential end parts are concavely curved.
6. The heavy duty tire according to or , wherein
claim 4
5
the circumferential end parts are inclined so that the axial width of the narrow lateral part gradually increases towards both the circumferential ends thereof.
7. The heavy duty tire according to or , wherein
claim 4
5
the circumferential end parts extends substantially parallel with the circumferential direction.
8. The heavy duty tire according to or , wherein
claim 4
5
the circumferential length of the convexly curved part is not less than 50% of the circumferential length of the narrow groove.
9. The heavy duty tire according to or , wherein
claim 4
5
the convexly curved part has a radius of curvature in the range of from 0.8 to 2.0 times the average axial width of the shoulder block.
10. The heavy duty tire according to , wherein
claim 1
the narrow groove has a width in the range of from 1.5 to 3.0 mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10-363304 | 1998-12-21 | ||
JP10363304A JP3076553B2 (en) | 1998-12-21 | 1998-12-21 | Heavy duty tire |
Publications (2)
Publication Number | Publication Date |
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US20010054463A1 true US20010054463A1 (en) | 2001-12-27 |
US6374884B2 US6374884B2 (en) | 2002-04-23 |
Family
ID=18479002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/467,485 Expired - Fee Related US6374884B2 (en) | 1998-12-21 | 1999-12-20 | Heavy duty tire including narrow groove |
Country Status (4)
Country | Link |
---|---|
US (1) | US6374884B2 (en) |
EP (1) | EP1013479B1 (en) |
JP (1) | JP3076553B2 (en) |
DE (1) | DE69915440T2 (en) |
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US7188650B2 (en) | 2004-12-28 | 2007-03-13 | The Goodyear Tire & Rubber Company | Siped tire tread with high transverse stiffness |
USD781220S1 (en) | 2016-03-22 | 2017-03-14 | Bridgestone Americas Tire Operations, Llc | Tire tread |
USD848941S1 (en) | 2016-01-28 | 2019-05-21 | Bridgestone Americas Tire Operations, Llc | Tire sidewall |
CN112339504A (en) * | 2019-08-07 | 2021-02-09 | 通伊欧轮胎株式会社 | Pneumatic tire |
US11312187B2 (en) | 2016-03-31 | 2022-04-26 | The Yokohama Rubber Co., Ltd. | Heavy-duty pneumatic tire |
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JPH11155528A (en) * | 1997-11-28 | 1999-06-15 | Fuji Oil Co Ltd | Packed egg tofu curd |
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JP5054264B2 (en) * | 2001-09-04 | 2012-10-24 | 住友ゴム工業株式会社 | Pneumatic tire |
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JP4528086B2 (en) * | 2004-10-14 | 2010-08-18 | 株式会社ブリヂストン | Pneumatic tire |
US7762297B2 (en) | 2004-11-18 | 2010-07-27 | Sumitomo Rubber Industries, Ltd. | Heavy duty pneumatic tire |
JP4695446B2 (en) * | 2005-06-17 | 2011-06-08 | 住友ゴム工業株式会社 | Heavy duty tire |
JP4729379B2 (en) * | 2005-10-03 | 2011-07-20 | 株式会社ブリヂストン | Pneumatic tire |
JP6467792B2 (en) * | 2014-06-23 | 2019-02-13 | 横浜ゴム株式会社 | Tire wear prediction method |
JP2016017922A (en) * | 2014-07-10 | 2016-02-01 | 横浜ゴム株式会社 | Method of estimating tire wear |
JP6229725B2 (en) * | 2014-07-23 | 2017-11-15 | 横浜ゴム株式会社 | Heavy duty pneumatic tire |
CN104129235B (en) * | 2014-08-26 | 2017-01-18 | 正新橡胶(中国)有限公司 | Tyre surface |
WO2016063713A1 (en) * | 2014-10-20 | 2016-04-28 | 横浜ゴム株式会社 | Pneumatic tire |
JP2016109644A (en) * | 2014-12-10 | 2016-06-20 | 横浜ゴム株式会社 | Tire abrasion evaluation method |
CN104960391B (en) * | 2015-07-14 | 2017-05-03 | 厦门正新橡胶工业有限公司 | Pneumatic tire of all-terrain vehicle |
JP6443376B2 (en) * | 2016-03-31 | 2018-12-26 | 横浜ゴム株式会社 | Heavy duty pneumatic tire |
JP6237810B2 (en) * | 2016-03-31 | 2017-11-29 | 横浜ゴム株式会社 | Heavy duty pneumatic tire |
JP6346932B2 (en) * | 2016-12-07 | 2018-06-20 | 東洋ゴム工業株式会社 | Pneumatic tire |
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JP2022159901A (en) * | 2021-04-05 | 2022-10-18 | 住友ゴム工業株式会社 | tire |
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JPH0253606A (en) * | 1988-08-11 | 1990-02-22 | Sumitomo Rubber Ind Ltd | Radial tire |
JP2755353B2 (en) * | 1989-12-15 | 1998-05-20 | 住友ゴム工業 株式会社 | Heavy duty tire |
JPH0516615A (en) * | 1991-07-08 | 1993-01-26 | Ohtsu Tire & Rubber Co Ltd :The | Pneumatic radial tire for heavy load |
JPH05104912A (en) * | 1991-10-15 | 1993-04-27 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
SE505583C2 (en) * | 1991-12-26 | 1997-09-15 | Sumitomo Rubber Ind | tread |
JP3586885B2 (en) * | 1994-04-28 | 2004-11-10 | 東洋ゴム工業株式会社 | studless tire |
JP2905704B2 (en) * | 1994-09-28 | 1999-06-14 | 住友ゴム工業株式会社 | Heavy duty pneumatic tires |
JP3100122B2 (en) * | 1996-07-22 | 2000-10-16 | 住友ゴム工業株式会社 | Pneumatic tire |
-
1998
- 1998-12-21 JP JP10363304A patent/JP3076553B2/en not_active Expired - Fee Related
-
1999
- 1999-12-17 DE DE69915440T patent/DE69915440T2/en not_active Expired - Fee Related
- 1999-12-17 EP EP99310168A patent/EP1013479B1/en not_active Expired - Lifetime
- 1999-12-20 US US09/467,485 patent/US6374884B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7188650B2 (en) | 2004-12-28 | 2007-03-13 | The Goodyear Tire & Rubber Company | Siped tire tread with high transverse stiffness |
USD848941S1 (en) | 2016-01-28 | 2019-05-21 | Bridgestone Americas Tire Operations, Llc | Tire sidewall |
USD781220S1 (en) | 2016-03-22 | 2017-03-14 | Bridgestone Americas Tire Operations, Llc | Tire tread |
US11312187B2 (en) | 2016-03-31 | 2022-04-26 | The Yokohama Rubber Co., Ltd. | Heavy-duty pneumatic tire |
CN112339504A (en) * | 2019-08-07 | 2021-02-09 | 通伊欧轮胎株式会社 | Pneumatic tire |
US20210039445A1 (en) * | 2019-08-07 | 2021-02-11 | Toyo Tire Corporation | Pneumatic tire |
Also Published As
Publication number | Publication date |
---|---|
EP1013479A3 (en) | 2001-04-25 |
EP1013479B1 (en) | 2004-03-10 |
JP2000177326A (en) | 2000-06-27 |
EP1013479A2 (en) | 2000-06-28 |
JP3076553B2 (en) | 2000-08-14 |
DE69915440D1 (en) | 2004-04-15 |
US6374884B2 (en) | 2002-04-23 |
DE69915440T2 (en) | 2005-01-20 |
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Legal Events
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Owner name: SUMITOMO RUBBER INDUSTRIES, LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MATSUURA, SHINICHI;TSUDA, SATOSHI;REEL/FRAME:010717/0443 Effective date: 19991213 |
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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
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FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20100423 |