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Pneumatic tires for road and off-road use

A tire and tread technology, applied in off-road vehicle tires, tire parts, tire treads/tread patterns, etc., to achieve the effect of low noise level, excellent road performance, and excellent off-road handling characteristics

Active Publication Date: 2016-08-24
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the implementation of the above requirements is contradictory

Method used

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  • Pneumatic tires for road and off-road use
  • Pneumatic tires for road and off-road use
  • Pneumatic tires for road and off-road use

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0059] exist figure 1 , 2 . 2A, a tire 1 is shown having a tread 2 according to a first embodiment of the invention.

[0060] The tire 1 is of conventional type in nature and comprises a carcass, a tread band overlying the carcass, a pair of axially opposite sidewalls terminating in beads utilizing Bead rings and corresponding bead inserts for reinforcement. Preferably, the tire also comprises a belt structure interposed between the carcass and the tread band. The carcass comprises one or more carcass plies anchored to the beads, while the belt structure comprises two belt strips arranged radially one on top of the other. The belt strips are formed from a rubberized fabric incorporating metal cords which in each strip are parallel to each other and have a crossed orientation with respect to the cords of adjacent strips, preferably with respect to the equatorial plane Slope symmetrically. Preferably, the belt structure further comprises a third belt strip in a radially out...

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PUM

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Abstract

Tyre (1 ) having a tread (2) comprising a central portion (L1 ) astride an equatorial plane (X-X) and two shoulder portions (L2.L3), wherein the shoulder portions (L2; L3) each have at least one row of lateral blocks (13;14), circumferentially separated from one another by shoulder transverse grooves (23;28); the central portion (L1 ) has a void-to-rubber ratio lower than 0,25 and comprises a first and a second row (9; 10) of central blocks; each block (32) of the first central row (9) being substantially axially aligned with a block (33) of the second row for defining a first transverse drainage channel (70), substantially continuous, which crosses the central portion (L1 ); the first transverse drainage channel (70) being defined between a first pair of blocks, formed by a block (32) of the first row (9) and a block (33) of the second row (10) arranged axially side by side, and the first circumferentially adjacent pair of blocks, formed in a similar way; each block (32) of the first row (9) has an extension direction, forming an angle a1 between 45° and 80° to the equatorial plane (X-X), and each block (33) of the second row (10) lies on the extension direction of the circumferentially preceding block (32) of the first row (9) such as to define an inclined and substantially continuous second drainage channel (71 ) which crosses the central portion (L1 ).

Description

technical field [0001] The invention relates to tires for motor vehicles. In particular, the present invention relates to engines with large displacement (eg 2000-3000cm 3 ) tires for motor vehicles, the tread of which provides excellent performance both on-road and off-road. Background technique [0002] In general, tires for off-road vehicles are designed (tread band, structure and profile) for driving especially on extreme terrain or in any case non-asphalt terrain, for example on rough ground, dirt roads and mud and / or or driving on gravel. [0003] In recent years, so-called "all-terrain" vehicles (four-wheel drive, abbreviated as 4×4), that is, vehicles that combine performance on off-road terrain and on-road terrain, have become increasingly popular and their flexibility has It has been greatly recognized by the market. [0004] In "all-terrain" are considered vehicles such as PICK-UP, but also SUVs (Sports Utility Vehicles), which combine the spaciousness normall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/11
CPCB60C11/11B60C11/033B60C11/1369B60C2200/14
Inventor G·科隆博S·蒙泰塞洛K·马查多
Owner PIRELLI TYRE SPA