SAFETY TIRE AND AIR BLADDER THERFOR

Title:

SAFETY TIRE AND AIR BLADDER THERFOR

Document Type and Number:

WIPO Patent Application WO/2004/106092

Kind Code:

A1

Abstract:

A safety tire in which a temperature distribution is rather uniformized by smoothly flowing the air charged therein through the entire inner part of the tire in an air charged state even when an air bladder is stored in the tire and the air bladder used for the tire. The safety tire (1) comprises the tire (2) and the air bladder (3) formed in a hollow cylindrical tube shape. In the air charged state, a space part (S₁) is formed between the outer surface (8) of the air bladder (3) and the inner surface (9) of the tire (2), and in a run flat state, the air bladder (3) is expanded and deformed to receive the support of a load from the tire (2). In the air bladder (3), a raised part (12) is formed in a specified outer surface area (A) to form a flow passage (13) allowing the air to flow between a rim and the air bladder. In the raised part (12), a rigid reinforcement part (15) having a width gradually increasing from a top surface (14) to the flow passage (13) is formed on a side wall surface. The ratio of the flow passage (13) to the specified outer surface area (A) comes within the range of 50 to 95% by area ratio.

Inventors:

TANAKA YOSHITAKA (JP)

Application Number:

PCT/JP2004/007374

Publication Date:

December 09, 2004

Filing Date:

May 28, 2004

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)
TANAKA YOSHITAKA (JP)

International Classes:

B60C5/08; B60C5/22; B60C17/01; B60C17/02; (IPC1-7): B60C17/01

Foreign References:

US20030041941A1	2003-03-06
JPS4021041B1	1965-09-18
US4995438A	1991-02-26
US5246050A	1993-09-21
JP2003146031A	2003-05-21
DE2438633A1	1976-03-04

Other References: