Radial tire for aircraft

A technology for radial tires and aircraft, applied to aircraft tires, tire parts, reinforcement layers of pneumatic tires, etc., can solve problems such as improving vulcanization pressure or rubber flow, and achieve the effect of improving durability and maintaining durability

Inactive Publication Date: 2010-03-24
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional organic fiber cords do not cause cord shrinkage upon heating or changes in cord length during tire vulcanization, so they do not have the effect of improving vulcanization pressure or rubber flow

Method used

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  • Radial tire for aircraft
  • Radial tire for aircraft
  • Radial tire for aircraft

Examples

Experimental program
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Embodiment Construction

[0017] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. figure 1 is a schematic cross-sectional view of a radial tire for aircraft according to the present invention. exist figure 1 Among them, reference numeral 1 is a tread portion, reference numeral 2 is a pair of sidewall portions each continuously extending radially inward from the side portion of the tread portion 1, and reference numeral 3 is the inner circumference of each sidewall portion 2. Continuously arranged bead portions.

[0018] Further, a radial tire carcass 4 composed of at least one carcass ply extends annularly between two bead portions 3 . The radial tire carcass 4 reinforcing these portions 1 , 2 , 3 is configured by winding each side portion around an annular bead core 5 embedded in each bead portion 3 from the inside to the outside.

[0019] On the outer periphery of the crown region of this radial tire carcass 4, a belt portion 7 composed of...

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PUM

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Abstract

This invention provides a radial tire for aircraft comprising a belt composed of a plurality of belt layers, wherein a total strength of the belt T belt ¢N! in a circumferential direction over its full width satisfies T belt / WD 1.510 6 in which D ¢m! is an outer diameter of the tire and W ¢m! is a width of the tire, the belt is composed of at least two belt layers each containing organic fiber cords with an elongation in an extension direction under a load of 3.2 cN / dtex of 2.2-9.3%, a protection belt layer having a circumferential stiffness lower than that of the belt is disposed at an outside of the belt in a radial direction, a ratio of the circumferential stiffness of the protection belt layer to the circumferential stiffness of the belt is less than 0.5, and the protection belt layeris composed of organic fiber cords having a tensile strength at break of not less than 6.3 cN / dtex and a heat shrinkage factor of 0.5-5.0%, whereby a durability of a tread portion can be improved without damaging an excellent durability against foreign matters.

Description

technical field [0001] The present invention relates to a radial tire for aircraft, and more particularly, to a radial tire for aircraft capable of maintaining tire durability against intrusion of foreign matter and realizing excellent high-speed durability of a tread portion. Background technique [0002] In radial tires for aircraft, an extremely high prescribed internal pressure exceeding 10 atmospheres is defined by statutory standards, and tire reinforcing members are required to have pressure resistance corresponding to four times the prescribed internal pressure. In addition, strict requirements for tire safety are enforced, and thus, it is required to provide durability that enables safe driving even if the tire tramples on foreign matter on the airstrip or applies a heavy load exceeding normal use conditions. [0003] In order to meet these requirements, a tire structure has been proposed that prevents the intrusion of foreign matter into the tread portion of the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/18B60C9/00B60C9/20
CPCB60C2200/02B60C9/2009
Inventor 矢野岳
Owner BRIDGESTONE CORP
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