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Extended-mobility tire having separeted carcass portions in summit

A technology for tires and tire tops, applied to tire parts, tire edges, vehicle components, etc., can solve problems such as reducing comfort characteristics, and achieve the effect of increasing comfort and good cooperation

Inactive Publication Date: 2008-06-11
MICHELIN & CO CIE GEN DES ESTAB MICHELIN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To support vehicle loads under low air pressure conditions, sidewall inserts are provided with high modulus materials, which would normally compromise comfort characteristics

Method used

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  • Extended-mobility tire having separeted carcass portions in summit
  • Extended-mobility tire having separeted carcass portions in summit
  • Extended-mobility tire having separeted carcass portions in summit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] "Axial" and "axially" mean a line or direction parallel to the tire's axis of rotation.

[0024] "Radial" and "radially" mean a radial direction toward or away from the tire's axis of rotation.

[0025] "An angle defined with respect to the axial direction" means the angle measured axially and radially outward from the inner side of the tire; the angle is between 0 and 180 degrees.

[0026] The armature or reinforcement of a tire is currently - and most often - comprised of one or more plies commonly referred to as "carcass plies", "crown plies", etc. stacked. This way of representing a reinforcing armature arises from the manufacturing process which consists of making a series of semi-finished products in the form of plies, equipped with reinforcing threads, usually longitudinal plies, which are then assembled or stacked to form a tire blank . The plies are manufactured flat, with large dimensions, and then cut according to the dimensions of a given product. In the...

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PUM

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Abstract

The invention provides a tire adapted for continued mobility in a substantially deflated condition comprising an inner carcass structure (5) and an outer carcass structure (6), both anchored in each side of the tire in a bead (1), a reinforced summit (14), sidewall portions (13) joining said summit (14), said bead (1) further comprising an anchoring zone (4) for anchoring said carcass structures (5, 6) in said bead, said tire comprising runflat inserts (9) provided in the axially inner portion of the sidewalls (13), said reinforced summit (14) being provided with at least one reinforcing cord arrangement (10, 11) disposed between said inner carcass structure (5) and said outer carcass structure (6).

Description

technical field [0001] The invention relates to a tire. More specifically, the present invention relates to a pneumatic tire capable of continuing to move in a deflated condition. Background technique [0002] Over the years, tire manufacturers have invested a great deal of effort in developing the original solution to the problem faced when pneumatic tires were first used on wheels, that is, how to operate the tire even if one or more tires lose some or all of their air pressure. to enable the vehicle to continue driving. For decades, a spare tire was considered the only, universal solution. Recently, however, considerable advantages have become apparent in connection with the possible removal of the spare wheel. The concept of "extended mobility" is taking shape. A related technology allows continued driving on the same tire under certain conditions after a puncture or loss of air pressure. This allows the driver to drive to a service point without having to stop for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C17/00B60C15/00
CPCB60C17/0018B60C15/0018B60C17/00
Inventor F·尚布里亚
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN