Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2016/117273
Kind Code:
A1
Abstract:
A pneumatic tire (1) wherein a reinforcing rubber layer (10) that has an approximately crescent-shaped meridional cross-section is arranged on both tire-width-direction sides of a side wall part (4). When the present invention is mounted on a normal rim and is in a no-load state wherein the internal pressure thereof is 0 kPa, if a straight line (La) that is sloped 10° to the tire-radial-direction outside with respect to a straight line (Lc) that orthogonally intersects a tire equatorial plane (CL) at the widest part of the tire in a meridional cross-section and a straight line (Lb) that is sloped 10°to the tire-radial-direction inside are drawn from the intersection (Q) of the straight line (Lc) and the tire equatorial plane (CL), the radius of curvature (RP) of the arc that connects the intersections (Pa, Pb, Pc) of the straight lines (La, Lb, Lc) and a carcass layer (6) is larger than the radius of curvature (RO) of the arc that connects the intersections (Oa, Ob, Oc) of the straight lines (La, Lb, Lc) and the outline of the tire. The present invention achieves both run-flat durability performance and steering stability performance without worsening rolling resistance.
Inventors:
KODA HIRAKU (JP)
Application Number:
PCT/JP2015/086096
Publication Date:
July 28, 2016
Filing Date:
December 24, 2015
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C17/00; B60C9/00; B60C9/06; B60C9/08; B60C13/00
Foreign References:
| JP2007069890A | 2007-03-22 | |||
| JP2001322410A | 2001-11-20 | |||
| JP2011057068A | 2011-03-24 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Sakai international patent firm (JP)
Patent business corporation Sakai international patent firm (JP)
Download PDF: