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tires for vehicle wheels

A technology for tires and vehicles, which is applied to vehicle parts, tire parts, tire treads/tread patterns, etc., and can solve the problems of increased contact pressure, rolling resistance, loss of performance, etc.

Active Publication Date: 2022-03-01
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In addition, the Applicant has noticed that the uneven distribution of the contact pressure of the various parts of the tread band on the road surface involves an increase in the rolling resistance, thus losing the properties sought

Method used

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  • tires for vehicle wheels
  • tires for vehicle wheels
  • tires for vehicle wheels

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0170] first reference Figures 1 to 3 , reference number 1 designates generally a first example of a tire for vehicle wheels formed according to the invention.

[0171] The tire 1 has a tire structure (not shown in the drawings), which is conventional in itself, and a tread band 2 on which a tread surface 3 is defined, said tread surface being arranged relative to the tread band 2 In a radially outer position and intended to be in contact with the road surface.

[0172] The tire 1 has a general, generally annular shape extending around an axis of rotation, defining on a tread surface 3 an axial direction Y parallel to said axis of rotation and crossed by an equatorial plane X perpendicular to the axis of rotation, and on which A circumferential direction parallel to said equatorial plane is defined on the surface 3 .

[0173] The tire 1 is preferably intended to be mounted on a performance car and has a nominal section width of approximately 225 mm and a rim diameter of 17 ...

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PUM

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Abstract

A tire (1) for a vehicle wheel, said tire comprising a tread band (2) on which is formed: - a pair of shoulder regions (7, 8), said pair of shoulder regions axially opposite each other; at least one first circumferential rib (12) interposed between said pair of shoulder regions and formed by a first pair of circumferential grooves ( 10, 11) define; - a plurality of first blind recesses (20) formed in said first circumferential rib (12) and having a first longitudinal extension; and - more a second blind recess (30), said plurality of second blind recesses being formed in said first circumferential rib (12) and having a second longitudinal extension smaller than said first longitudinal extension; - at least a second circumferential rib (15), said at least one second circumferential rib interposed between said pair of shoulder regions and bounded by a second pair of circumferential grooves (13, 14); and - more A plurality of through recesses (40) are formed in the second circumferential rib (15) and extend between circumferential grooves of the second pair of circumferential grooves.

Description

technical field [0001] The invention relates to a tire for vehicle wheels, in particular a tire for high-performance automobiles. Background technique [0002] A tire generally comprises a carcass structure formed annularly around an axis of rotation and comprising at least one carcass web having end edges respectively joined to In the annular fixed structure for the bead core. [0003] In a radially outer position with respect to the carcass structure there is provided a belt structure which, in the case of an automobile tire, comprises at least two radially superposed strips of rubber fabric provided with typically Reinforcing cords of metal, arranged in each strip parallel to each other but crossing with respect to the cords of adjacent strips, preferably symmetrically with respect to the equatorial plane of the tyre. [0004] Preferably, the belt structure further comprises a third layer of fabric or metal cords in a radially outer position at least below the ends of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/03B60C11/12
CPCB60C11/0304B60C11/033B60C2011/0341B60C11/1236B60C2011/0381B60C2011/0372B60C11/0306B60C11/1204
Inventor D·E·斯佩齐亚里S·蒙泰塞洛V·贝洛
Owner PIRELLI TYRE SPA