Pneumatic tire with tread siping

A technology for sipes and tires, applied to tire treads/tread patterns, tire parts, vehicle parts, etc., can solve problems such as slowing down tread energy accumulation, sipe wear, and weakening the resistance of tread elements

Inactive Publication Date: 2007-12-12
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tendency for relative longitudinal slippage between opposing faces of the sipe reduces the resistance of the tread elements to flexing in the tread-road contact area and thereby slows tread energy build-up; however, the sipe Slippage between opposing sipe faces creates friction between opposing sipe faces and can lead to wear of the sipe

Method used

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  • Pneumatic tire with tread siping
  • Pneumatic tire with tread siping
  • Pneumatic tire with tread siping

Examples

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Embodiment Construction

[0028] The following text describes the best contemplated mode or implementation of the invention. The purpose of this description is to illustrate the general principles of the invention and should not be construed in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0029] Figure 1 shows an exemplary tread 10 for a pneumatic tire. Tires using the tread shown may be of radial or bias configuration; more typically a radial configuration. The tire tread 10 has a plurality of circumferential grooves 12 and a plurality of transverse grooves 14 , 16 . These grooves 12 , 14 , 16 are combined differently from the plurality of tread elements 18 , 20 . Some of the transverse grooves 14 extend between the circumferential grooves 12 and some of the transverse grooves terminate inside the tread elements 18 , 20 forming blind grooves 16 . For the tread shown, there is at least one sipe inside each tread element 18, 20, either block-...

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Abstract

A tire having a tread has at least one tread element with a multidimensional sipe formed in the tread element. The sipe has a width W, a depth Ds, and an effective length Le. The sipe has a first radially outermost portion with a constant effective length Le, a second transitional portion with a gradually increasing effective length Le, and a third radially innermost portion having a constant effective length Le greater than the effective length of the first portion.

Description

technical field [0001] The present invention relates to a pneumatic tire. More particularly, the present invention relates to tires having a tread provided thereon with a special type of multidimensional siping, wherein, when the tire tread is in a substantially unworn state, the length of the sipe inside the tread elements is greater than The length of the tread pattern on the tread surface of a tire. Background technique [0002] The tread portion of a pneumatic tire generally includes a plurality of axially and transversely extending grooves defining ground engaging rubber elements in the form of blocks or ribs or a combination of both. The particular size or shape of the tread elements contributes significantly to the overall performance of the tire, and for this reason they are designed to achieve the desired characteristics of the tire. [0003] Conventionally, tire treads are also provided with sipes of known character. A sipe is a groove having a width in the rang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/117
CPCB60C11/0304B60C11/12B60C11/1218B60C11/03
Inventor L·J·伯韦尔德S·A·爱德华兹N·L·伯尔曼
Owner THE GOODYEAR TIRE & RUBBER CO
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