Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2019/107255
Kind Code:
A1
Abstract:
In this pneumatic tire, the proportion of rubber in a closed region X is in a range of no greater than 15%. A bead core 11 has a predetermined wire arrangement structure, formed by arraying wire cross-sections of bead wires 111, when viewed in a cross-section in the tire meridian direction. In addition, defined are: a tangent line L1 meeting, from a rim fitting surface side, wire cross-sections in the innermost layer in the tire radial direction and on the innermost side and the outermost side in the tire width direction of the wire arrangement structure; tangential points C1, C2 of the tangent line L1 with respect to the wire cross-sections on the innermost side and the outermost side; a middle point Cm between the tangential points C1, C2; and the gauge Gm in the tire radial direction from the middle point Cm to the rim fitting surface. Here, the change rate ΔGm of the gauge Gm before and after rim assembly is in the range of 10-60% inclusive.
Inventors:
KODA HIRAKU (JP)
MATSUDA JUN (JP)
TANNO ATSUSHI (JP)
MATSUDA JUN (JP)
TANNO ATSUSHI (JP)
Application Number:
PCT/JP2018/043084
Publication Date:
June 06, 2019
Filing Date:
November 21, 2018
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C15/00; B60C15/024; B60C15/04; B60C15/06
Foreign References:
| JP2002301915A | 2002-10-15 | |||
| JP2013063679A | 2013-04-11 | |||
| JP2012162204A | 2012-08-30 | |||
| JP2013052720A | 2013-03-21 | |||
| JP2009274477A | 2009-11-26 | |||
| JP2000309210A | 2000-11-07 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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