Title:
RUN-FLAT TIRE
Document Type and Number:
Japanese Patent JP2019142456
Kind Code:
A
Abstract:
To provide a run-flat tire that can improve anti-shock burst performance while securing run-flat travelling performance and further reduce rolling resistance.SOLUTION: A side reinforcing rubber 50 is provided in a side wall part 8. When an area where a center land part 21 is positioned is defined as a center area Ac, an area between a position corresponding to 85% of a width in a tire width direction of a belt layer 14 and an end part 144 of the belt layer 14 is defined as a shoulder area Ash, an area ranging from a position on a tire inner surface 18 of a part with a largest width of a carcass layer 13 to a position on the tire inner surface 18 corresponding to 0.15 times a height SH of a tire cross section, outside in a tire radial direction is defined as a side area As, a relation among a tire average thickness Gc in the center area Ac, a tire average thickness Gsh in the shoulder area Ash, and a tire average thickness Gs in the side area As satisfies 1.00≤(Gc/Gsh)≤1.30 and is in a range of 0.98≤(Gc/Gs)≤1.25.SELECTED DRAWING: Figure 2
Inventors:
SHIMIZU EISEI
Application Number:
JP2018031101A
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C17/00; B60C9/08; B60C11/00; B60C11/01; B60C13/00
Domestic Patent References:
| JP2002301914A | 2002-10-15 | |||
| JP2003080906A | 2003-03-19 | |||
| JPH0379404A | 1991-04-04 | |||
| JP2009262808A | 2009-11-12 | |||
| JP2002002216A | 2002-01-08 | |||
| JPH03200402A | 1991-09-02 | |||
| JP2010247780A | 2010-11-04 | |||
| JP2004345557A | 2004-12-09 | |||
| JPS59124406A | 1984-07-18 |
Attorney, Agent or Firm:
Sakai International Patent Office