Tyre

A tire and carcass technology, applied in heavy tires, tire parts, tire edges, etc., can solve the problems of fragile durability performance and quality, complex manufacturing process of semi-finished plies, and achieve the effect of reducing weight

Active Publication Date: 2019-03-15
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this design there is no problem with the proximity of the beaded ends, but in some types of use, especially due to traffic loads, the durability qualities of the axially outermost carcass reinforcement ply are more fragile
[0023] Document WO 97 / 27070 discloses a tire whose carcass reinforcement consists of two plies associated with a third shorter ply to be clamped integrally to the bead core, The tire thus requires semi-finished plies of different sizes and a relatively complex manufacturing process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tyre
  • Tyre
  • Tyre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0082] figure 1 Only a half-view of a tire is shown, which extends in a symmetrical manner with respect to an axis XX', which represents the circumferential mid-plane or equatorial plane of the tire.

[0083] figure 1 A schematic cross-sectional depiction of a small truck type tire 1 of size 215 / 75R17.5 is shown. Should figure 1 A carcass reinforcement comprising a first carcass reinforcement ply 2 wound around a bead core 3 forming a turn-up 4 with an end 5 is shown. Also shown is a second carcass reinforcement ply 6 , the ends 7 of which are radially inside and axially inside the geometric center 8 of the bead core 3 .

[0084] The beads were braided beads with a diameter equal to 9.2 mm.

[0085] Present radially on the outside of the carcass reinforcement is a crown reinforcement 9 , which is in turn radially covered with a tread 10 .

[0086] The carcass reinforcement plies 2 and 6 consist of reinforcing elements between two calendered plies made of a rubber-like ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A tyre (1) is equipped with radial carcass reinforcement formed by two plies (2, 6) of textile reinforcement elements, a first carcass reinforcement ply (2) being anchored in each of the beads by being turned up around a bead core (3), in each bead, the axial orientation straight line (D) passing through the geometric centre (8) of the bead core (3) has a single point (A) of intersection with thesecond carcass reinforcement ply (6), said single intersection point (A) being axially outside the axially outermost point of the bead core (3), the distance between the end of the turn-up (5) of thefirst carcass reinforcement ply (2) and the geometric centre (8) of the bead core (3) is greater than the width of the bead core (3) and less than 30 mm and the end (7) of said second carcass reinforcement ply (6) is axially inside the geometric centre (8) of the bead core (3).

Description

technical field [0001] The invention relates to a tire with a radial carcass reinforcement formed by two plies of reinforcing elements. [0002] Although not limited to this type of application, the tire will be described as relating more particularly to tires intended to fit vehicles of the light truck type, such as trucks or vans. Even more specifically, the invention will be described as relating to tires intended to fit vehicles of the light truck type, intended to be mounted on rims with a diameter greater than or equal to 17 inches, and having an operating pressure greater than or equal to 6 bar. Background technique [0003] In tires of the light truck type, the carcass reinforcement is usually anchored on both sides of the bead area and is radially covered by a crown reinforcement. [0004] For this type of tire, the carcass reinforcement usually consists of a ply of metallic reinforcing elements. [0005] Such tires also usually further comprise one or more plies ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60C15/00B60C15/06
CPCB60C15/0027B60C15/0018B60C15/0603B60C2200/06B60C15/0072B60C2009/0269B60C2015/0621B60C2009/0276B60C15/06B60C2015/009B60C2015/0617
Inventor E·乔琳W·莱森斯
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap