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Tyre for vehicle wheels

A technology of tires and wheels, which is applied to vehicle parts, tire parts, tire treads/tread patterns, etc., and can solve problems such as reducing tire performance

Active Publication Date: 2018-01-30
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when the road surface is not covered with snow but is dry or wet, the blocks of the tread band The presence of the aforementioned grooves on tires where this tangential force (or "shear stress") is applied to the tread band during acceleration, cornering or braking can significantly reduce the performance of the tire

Method used

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  • Tyre for vehicle wheels
  • Tyre for vehicle wheels
  • Tyre for vehicle wheels

Examples

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Embodiment Construction

[0065] Referring to the drawings, a tire for vehicle wheels manufactured according to the present invention is generally indicated by reference numeral 1 .

[0066] The tire 1 has a conventional form, substantially toroidal, extending around an axis of rotation defining an axial direction Y of the tyre, and through which an equatorial plane X extends perpendicularly to said axis of rotation.

[0067] The tire 1 is a winter tire and comprises a tire structure, which is conventional in nature and not illustrated in the drawings, and a tread band 2 arranged radially externally with respect to the tire 1 location, and if figure 1 for contact with the road surface 3 as schematically shown in .

[0068] Preferably, tire 1 has a nominal section width of between about 155 mm and about 235 mm. Preferably, said nominal cross-sectional width is less than or equal to about 215 mm. Preferably, the tire 1 has a rim diameter of between 14 inches and 17 inches.

[0069] An effective width...

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Abstract

A tyre for vehicle wheels comprises a tread band (2) having a tread pattern in which there are defined a central region (5) extending circumferentially and symmetrically across an equatorial plane (X)of the tyre over a width equal to about 60% of an effective width (L) of the tread band, and a first and a second shoulder region (6, 7) which extend at the axially opposing sides of the central region, respectively. The tread band comprises a plurality of main grooves (10) which extend from the central region (5), through the first or alternatively the second shoulder region (6, 7), in order toopen at a lateral edge (8, 9) of the tread band, and at least one plurality of secondary grooves (20, 21) which extend in a substantially circumferential direction between consecutive pairs of main grooves (10). The main grooves are arranged in such a manner that any radial plane (R, S) intersects at the central region (5) with at least four main grooves (10).

Description

technical field [0001] The invention relates to a tire for vehicle wheels, said tire being provided with a tread pattern specially configured to optimize the performance of the tire under different road surface conditions. Background technique [0002] A tire generally comprises a carcass structure formed toroidally around an axis of rotation and comprising at least one carcass web (web) with a edge of the end. [0003] In a radially outer position with respect to the carcass structure there is provided a belt structure comprising, in the case of automobile tires, at least two radially superimposed strips of rubber fabric with reinforcing cords, usually of metal The reinforcing cords are arranged parallel to each other in each strip, but intersecting the cords in adjacent strips and preferably symmetrically with respect to the equatorial plane of the tyre. [0004] Preferably, the belt structure also comprises a third layer of fabric or metal cords arranged circumferential...

Claims

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Application Information

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IPC IPC(8): B60C11/03B60C5/18B60C11/12
CPCB60C11/033B60C11/0332B60C11/1236B60C11/0302B60C2011/0376B60C2011/0341B60C5/18B60C11/03B60C11/12
Inventor V·贝洛S·蒙泰塞洛D·E·斯佩齐亚里
Owner PIRELLI TYRE SPA
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