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Patent Searching and Data


Title:
TUBELESS TIRE
Document Type and Number:
Japanese Patent JP2000198327
Kind Code:
A
Abstract:

To optimize fitting pressure or fastening force of a bead.

This tubeless tire includes an annular bead core 3 at a bead, and a bead core cross-sectional ratio Cw/Ch being the ratio of a width Cw and height Ch of the bead core 3 is from 0.33 to 2.5 at a tire meridional cross section including a tire axis. In such a case, equations: 1.003≤Φ/D≤1.020, 5°≤θ≤25°, 0.45≤L/W≤0.60 are satisfied. In the equations, Φ stands for an inner diameter of the bead core 3; D for a rim diameter of a normal rim; θ for an angle of a bead bottom surface in regard to a tire axial line; W for a bead width; and L for a tire axial distance from the bead bottom surface to a cross- sectional center point of the bead core 3.


Inventors:
SAKUNO HIROAKI
Application Number:
JP1998000374840
Publication Date:
July 18, 2000
Filing Date:
December 28, 1998
Export Citation:
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Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C15/00; B60C15/024; B60C15/04; (IPC1-7): B60C15/00; B60C15/024; B60C15/04
Attorney, Agent or Firm:
苗村 正 (外1名)