Title:
不整地用モーターサイクルタイヤ
Document Type and Number:
Japanese Patent JP5863456
Kind Code:
B2
Abstract:
An off-road motorcycle-tire (2) includes a tread (4) having shoulder blocks (18c), and sidewalls (6). Each shoulder block (18c) includes a main portion (20) and an end portion (22). The main portion (20) is formed by a first crosslinked rubber composition. The end portion (22) and the sidewalls (6) are formed by a second crosslinked rubber composition. The JIS-A hardness Ha of the main portion (20) is greater than JIS-A hardness Hb of the end portion (22) and the sidewalls (6). Difference (Ha-Hb) is greater than or equal to 5, and is not greater than 12. A ratio (H2/H1) of a height H2 from a boundary point Pb between the tread (4) and each sidewall (6) to a boundary point P2 between the main portion (20) and the end portion (22), relative to a height H1 from the boundary point Pb to an outermost end P1 of a corresponding one of the shoulder blocks (18c) in the axial direction, is greater than or equal to 1/3.
Inventors:
Masahiro Hikita
Application Number:
JP2011290318A
Publication Date:
February 16, 2016
Filing Date:
December 29, 2011
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C11/00; B60C13/00; B60C15/06
Domestic Patent References:
| JP2008285081A | ||||
| JP4365601A | ||||
| JP2008254573A | ||||
| JP6038212A | ||||
| JP6056604A | ||||
| JP200450963A | ||||
| JP200267635A | ||||
| JP2002337512A |
Attorney, Agent or Firm:
Kengo Oka
Sumitomo Norio
Kuroyoshi Murohashi
Hiroshi Kasakawa
Kei Someya
Yukari Imamura
Hiroomi Nakao
Sumitomo Norio
Kuroyoshi Murohashi
Hiroshi Kasakawa
Kei Someya
Yukari Imamura
Hiroomi Nakao