Title:
【発明の名称】空気入りタイヤ
Document Type and Number:
Japanese Patent JP3007825
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve identification of a display mark by making an outer surface of the display mark provided on a side wall surface in an irregular section provided with a large number of thin grooves extending in a constant direction and arranged in parallel with equal pitches and specifying depth of the striations and a thin groove depth ratio against a pitch between the striations. SOLUTION: A thin groove 4 is formed in an inverted trapezoidal shape, its striation depth (b) is made 1.0mm or less, and a striation depth ratio b/a which is a ratio of the striation depth (b) against a pitch between the striations (a) is made 0.5 or more and 2.2 or less. Additionally, the thin groove 4 is formed to open out at an angle θ of 0 degrees or more and 30 degrees or less against a slope line N vertical on a side wall surface 2 with its thin groove wall surface 5. Orientation of these thin grooves 4... is arranged diagonally against a tire radial line. Light irradiating the side wall surface 2 hits a wall of the thin groove 4 in a region of a display mark 3, reflects in a different direction from the side wall surface 2, and a difference of light and darkness from a part out of the region remarkably appears, and identification of the display mark 3 is improved.
Inventors:
Noboru Wakabayashi
Isamu Tsumori
Marina Kotani
Shuichi Sakamoto
Isamu Tsumori
Marina Kotani
Shuichi Sakamoto
Application Number:
JP25128895A
Publication Date:
February 07, 2000
Filing Date:
September 28, 1995
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C13/00; (IPC1-7): B60C13/00
Domestic Patent References:
| JP6092604U | ||||
| JP60160207U |
Attorney, Agent or Firm:
Tadashi Naemura (1 person outside)