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EP-0976587-A2-20000202
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"EP0976587"; "EP 0976587"; "B60C 9/18"; "B60C 9/20"; "Pneumatic radial tires"
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A pneumatic radial tire, in particular a heavy duty pneumatic radial tire, comprises a radial carcass (1) toroidally extending between a pair of bead cores embedded in a pair of bead portions, a tread portion (2), and a belt (3) superimposed about an outer periphery of the carcass to reinforce the tread portion and comprised of at least three rubberized cord layers (3-1, 3-2, 3-3), cords of two adjacent layers (3-2, 3-3) among said layers being crossed with each other at an acute cord angle with respect to an equatorial plane (E) of the tire to form cross cord layers, in which an outer cord layer (3-3) of the cross cord layers in a radial direction of the tire has a width narrower than that of an inner cord layer (3-2), and said narrow-width cord layer (3-3) is provided with an end cover rubber (24) covering each of the end portions of said layer, and at least one of an outer portion and an inner portion of the end cover rubber (24) in the radial direction of the tire forms a wavy form in a direction perpendicular to the cords arranged in the narrow-width cord layer (3-3), and a height (H) between a bottom and a peak of the wavy surface is within a range of 0.05 - 0.25mm. [image]
A pneumatic radial tire, in particular a heavy duty pneumatic radial tire, comprises a radial carcass (1) toroidally extending between a pair of bead cores embedded in a pair of bead portions, a tread portion (2), and a belt (3) superimposed about an outer periphery of the carcass to reinforce the tread portion and comprised of at least three rubberized cord layers (3-1, 3-2, 3-3), cords of two adjacent layers (3-2, 3-3) among said layers being crossed with each other at an acute cord angle with respect to an equatorial plane (E) of the tire to form cross cord layers, in which an outer cord layer (3-3) of the cross cord layers in a radial direction of the tire has a width narrower than that of an inner cord layer (3-2), and said narrow-width cord layer (3-3) is provided with an end cover rubber (24) covering each of the end portions of said layer, and at least one of an outer portion and an inner portion of the end cover rubber (24) in the radial direction of the tire forms a wavy form in a direction perpendicular to the cords arranged in the narrow-width cord layer (3-3), and a height (H) between a bottom and a peak of the wavy surface is within a range of 0.05 - 0.25mm. [image]
en
European Patent Office
EP0976587
EP 0976587
B60C 9/18
B60C 9/20
Pneumatic radial tires
Pneumatic radial tires - European Patent Office - EP 0976587 A2
Pneumatic radial tires - European Patent Office - EP 0976587 A2
EUROPEAN PATENT APPLICATION
34
EP
0976587
A2
2000-02-02
99119194.1
1997-01-22
JP
806796
1996-01-22
JP
124697
1997-01-08
B60C 9/18 A
B60C 9/20 B
Bridgestone Corporation
Okamoto, Yoichi
Whalley, Kevin
Pneumatic radial tires
Radiale Luftreifen
Pneumatic radial tires
Bandages pneumatiques radiaux
A pneumatic radial tire, in particular a heavy duty pneumatic radial tire, comprises a radial carcass (1) toroidally extending between a pair of bead cores embedded in a pair of bead portions, a tread portion (2), and a belt (3) superimposed about an outer periphery of the carcass to reinforce the tread portion and comprised of at least three rubberized cord layers (3-1, 3-2, 3-3), cords of two adjacent layers (3-2, 3-3) among said layers being crossed with each other at an acute cord angle with respect to an equatorial plane (E) of the tire to form cross cord layers, in which an outer cord layer (3-3) of the cross cord layers in a radial direction of the tire has a width narrower than that of an inner cord layer (3-2), and said narrow-width cord layer (3-3) is provided with an end cover rubber (24) covering each of the end portions of said layer, and at least one of an outer portion and an inner portion of the end cover rubber (24) in the radial direction of the tire forms a wavy form in a direction perpendicular to the cords arranged in the narrow-width cord layer (3-3), and a height (H) between a bottom and a peak of the wavy surface is within a range of 0.05 - 0.25mm. [image]
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