Unlock instant, AI-driven research and patent intelligence for your innovation.

Consist of at least two double-ply tires

A tire, double-layer technology, applied in aircraft tires, tire parts, reinforcement layers of pneumatic tires, etc., can solve the problems of aircraft tire durability limitation, breakage, etc.

Active Publication Date: 2016-04-13
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Aircraft tires produced according to one or the other of the above techniques are limited in durability due to the fact that the double layer of reinforcing elements can break in the shoulder area of ​​the tire

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
  • Consist of at least two double-ply tires
  • Consist of at least two double-ply tires
  • Consist of at least two double-ply tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Figure 1a The tire 1 shown comprises a radial carcass reinforcement 2 anchored in two beads (not shown in FIG. 1 ) and covered by a tread 3 . The carcass reinforcement 2 also has a crown reinforcement 4 as a hooping reinforcement.

[0048] The crown reinforcement 4 is formed radially from the inside towards the outside by:

[0049] - A first double layer 5 comprising two plies 51 , 52 without free ends on the edges of the double layer 5 . This double layer 5 is obtained, for example, by transversely winding a strip of eight mutually parallel reinforcing elements. Lateral wrapping corresponds to laying the bead continuously from one edge to the other, forming one or more cycles per wheel revolution. This technique of laying the strips makes it possible to produce plies 51 , 52 with reinforcing elements parallel in each ply and crossed from one ply to the next, without free ends at the edges of one ply; Then

[0050] - a layer of rubber 6 covering the ends of the do...

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

The invention relates to a tire comprising a crown reinforcement formed from at least two double layers (5, 7) of parallel reinforcing elements within one layer, said reinforcing elements being at a constant pitch. A distribution that crosses from one layer to another and does not have any free ends at its edges. According to the invention, in the radial plane there is a structure consisting of four two-by-two adjacent reinforcing elements (12a, 12b, 13a, 13b) belonging to a double layer (5, 7) in pairs and forming a quadrilateral (11). In the area bounded by the geometric center, the surface density of the reinforcing elements is greater in the center of the tire than at the ends of the double layer.

Description

technical field [0001] The invention relates to a tire comprising a crown reinforcement formed by at least two double layers of parallel reinforcing elements in one ply, the reinforcing elements crossing from one ply to the other , and has no free ends at its edges. Background technique [0002] While not limited to such applications, the invention will be described more particularly with reference to aircraft tires. Aircraft tires are distinguished in particular by combining an inflation pressure greater than 9 bar and a relative deflection greater than 28%. [0003] Under rated load and rated pressure conditions, the deflection of the tire is defined by the amount of radial deformation or change in radial height of the tire when the tire is brought from an unloaded state to a static loaded state. [0004] The deflection is expressed in terms of the relative deflection defined by the ratio of this change in tire radial height to half the difference between the outer diame...

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 Patents(China)
IPC IPC(8): B60C9/20B60C19/00
CPCB60C9/2009B60C2200/02B60C2009/1842Y10T152/10765
Inventor M·科涅M·德-图利奥
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN