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Tires for two-wheeled vehicles and processes for their manufacture

A technology for tires and vehicles, which is applied to the reinforcement layers of pneumatic tires, vehicle parts, tire parts, etc., and can solve problems such as poor lateral thrust and reduced cornering stability.

Active Publication Date: 2011-11-30
PIRELLI TYRE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, lower values ​​of this angle (towards 0°) on the shoulders and crown correspond to high stability in a straight line, but poor lateral thrust
[0011] Conversely, higher values ​​of said angle on the shoulders and crown correspond to higher ride comfort but reduced cornering stability

Method used

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  • Tires for two-wheeled vehicles and processes for their manufacture
  • Tires for two-wheeled vehicles and processes for their manufacture
  • Tires for two-wheeled vehicles and processes for their manufacture

Examples

Experimental program
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Embodiment Construction

[0083] Referring to the accompanying drawings, a tire for two-wheeled vehicles according to the present invention is indicated at 1 . In particular, said tire 1 comprises a carcass structure 2 provided with at least one carcass ply 2a shaped into a substantially annular configuration and connected via its opposite circumferential edges to at least one annular shaped reinforcing structure to form a structure commonly referred to as a "bead" 4 .

[0084] A belt structure 5 is applied circumferentially to the radially outer position of the carcass structure 2 , on which belt structure 5 a tread band 8 is superposed radially. After the molding operation carried out together with the vulcanization of the tyre, said tread band 8 is formed with longitudinal and transverse grooves arranged to define the desired "tread pattern". The tire in the known manner also comprises a pair of sidewalls 9 applied transversely to opposite sides of the carcass structure 2 .

[0085] Said tire 1 ha...

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PUM

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Abstract

Within the tyre manufacture, a belt structure (2) is made by means of strip-like segments or elements (15) each comprising parallel cords embedded in an elastomeric layer, sequentially laid along the circumferential extension of a toroidal support (3), in such a manner that: each strip-like element (15) is laid in a laying trajectory (T) defining, at each point, a laying angle (alpha); at each point of the laying trajectory (T) a laying gap (delta g) is formed between adjacent strip-like elements (5); said laying trajectory (T) is formed starting from preselected laying angles on the shoulder (alpha sp) and on the crown (alpha c) of the tyre; the laying gap (delta g) between adjacent strip-like elements (5) varies along at least one section of said laying trajectory (T) between crown and shoulder so as to cause variation of said laying angle (alpha) and obtain said preselected angles on the shoulder (alpha sp) and on the crown (alpha c).

Description

technical field [0001] The present invention relates to a tire for a two-wheeled vehicle and a process for manufacturing such a tire. [0002] In particular, the invention relates to a tire for two-wheeled vehicles provided with a reinforcing structure obtained by applying strip-like elements along the circumferential extension of the annular support. Each of said strip-like elements comprises longitudinal reinforcing linear elements arranged parallel to each other and at least partially coated with at least one layer of elastomeric material. Background technique [0003] Tires for wheels typically include a carcass structure consisting essentially of one or more carcass plies shaped into a generally annular configuration and having axially opposed transverse edges aligned with each other. Corresponding annular reinforcing structures are joined which incorporate annular metal inserts commonly referred to as "bead cores". Each annular reinforcing structure is embedded in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/20B60C9/28
CPCB60C9/28B60C9/20Y10T152/10765
Inventor P·米萨尼F·马利亚尼M·坎图
Owner PIRELLI TYRE SPA
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