Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP4989755
Kind Code:
B2
Abstract:
A pneumatic tire comprises a plurality of protect ribs extending at an angle α of 0 to 20° with respect to a tire radial direction line and provided on outer surfaces S of sidewall portions at distances from each other in a circumferential direction of a tire. Each of the protect ribs includes a maximum height portion whose height from the outer surface S is maximum. A vertical cross section shape which passes through the maximum height portion is of substantially triangular shape. This s substantially triangular shape includes an outer end-side inclined portion having the height which is gradually reduced from the maximum height portion to a radial outer end Ra, and an inner end-side inclined portion having the height which is gradually reduced from the maximum height portion to a radial inner end Rb. A distance La between the maximum height portion and the radial outer end Ra in the length direction is in a range of 0.1 to 0.3 times of a distance LR in the length direction between the radial outer end Ra and the inner end Rb of the protect rib, and a tire radial distance Ha between the radial outer end Ra of the protect rib and a bead base line is in a range of 0.6 to 0.8 times of a tire cross section height HT.
Inventors:
Hirokazu Takano
Application Number:
JP2010157066A
Publication Date:
August 01, 2012
Filing Date:
July 09, 2010
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C13/00; B60C13/02
Domestic Patent References:
| JP2004306873A | ||||
| JP9024710A | ||||
| JP2003112505A | ||||
| JP52025301A | ||||
| JP54017204A | ||||
| JP9300920A | ||||
| JP2009029382A |
Attorney, Agent or Firm:
Sumitomo Shintaro