Title:
【発明の名称】高速重荷重用タイヤ
Document Type and Number:
Japanese Patent JP2544528
Kind Code:
B2
Abstract:
PURPOSE:To reduce generation of an inner distortion in filling an inner pressure of air, and improve the durability by setting a radius of curvature of a first arc passing through a tread crown zone of a carcass line formed by a carcass inner surface on a specified inner pressure condition to be a specified ratio to a regular inner pressure condition. CONSTITUTION:A radius of curvature R1A of a first arc CIA of a carcass inner line LA in an inner pressure condition of 0.5kg/cm<2> is set to be 1.0 times or more and 3.0 times or less a radius of curvature RIB in a regular inner pressure condition by setting a curvature in a crown zone preliminarily by a shape of a tire die. By thus regulating a change quantity of the radius of curvatrue of a carcass inner line L, restriction of a local deformation of a tire when an inner pressure is charged and equalization of a cord tension can be achieved, and lifting of a tread part can be reduced to equalize a grounding pressure by the equalization of the cord tension.
Inventors:
KAMYOKO KYOSHI
YOSHIKAWA EIMEI
NISHIMURA KAZUNAGA
TAKATSU MIKIO
YOSHIKAWA EIMEI
NISHIMURA KAZUNAGA
TAKATSU MIKIO
Application Number:
JP4436391A
Publication Date:
October 16, 1996
Filing Date:
February 15, 1991
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C3/04; B60C9/08; B60C11/00; B60C19/00; (IPC1-7): B60C9/08; B60C3/04
Domestic Patent References:
| JP2225105A | ||||
| JP5551605A | ||||
| JP6334203A | ||||
| JP558903A | ||||
| JP63179708A | ||||
| JP63106102A | ||||
| JP1309805A |
Attorney, Agent or Firm:
Naemura Tadashi