Title:
RUN FLAT TIRE
Document Type and Number:
WIPO Patent Application WO/2014/188700
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a run flat tire (1) that can secure sufficient resistance to rim detachment even during run flat traveling and while maintaining the durability of a side reinforcing rubber. The run flat tire (1) is provided with: a tread section; a pair of side wall sections that are contiguous with both sides of the tread section; a bead section (2) that is contiguous with each side wall section; a bead core (5) that is embedded in the bead section (2); and a side reinforcing rubber that has a crescent-moon-shaped cross section and that is provided to the side wall section. The run flat tire (1) is characterized in that in a cross sectional view in the direction of tire width, the diameter (Dc) at the inside end in the direction of the tire diameter of the bead core is 3.0-4.5 mm larger than the rim diameter (Dr), and the diameter (Dh) of the bead heel point (Ih) of the bead section (2) is 1.7-2.9 mm smaller than the rim diameter (Dr) of the rim of application.
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Inventors:
MOTOORI OSAMU (JP)
Application Number:
PCT/JP2014/002629
Publication Date:
November 27, 2014
Filing Date:
May 19, 2014
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C15/024; B60C15/06; B60C17/00
Foreign References:
| JP2002513361A | 2002-05-08 | |||
| JP2009126262A | 2009-06-11 | |||
| JP2001225614A | 2001-08-21 | |||
| JP2010111173A | 2010-05-20 | |||
| JP2009126262A | 2009-06-11 |
Other References:
See also references of EP 3000625A4
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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