Title:
【発明の名称】乗用車用ラジアルタイヤ
Document Type and Number:
Japanese Patent JP2773825
Kind Code:
B2
Abstract:
PURPOSE:To improve riding sensation without deteriorating high speed stability and drive stability by setting a ratio between the height at the maximum width of a carcass and the height of a section and a ratio between the curvature of radius of an arc of a circle curved along the carcass and the maximum width of the carcass to respective specified values. CONSTITUTION:In the profile of a carcass 6 in a state that a tire 1 is filled with a normal internal pressure, a ratio h/H between height (h) at a carcass maximum width, being a radial direction from a bead base B of the tire 1 to a carcass maximum width position (a), and a carcass section height H being a radial distance from the bead base B to a carcass highmost position (b) is set to a value within a range of 0.460-0.495. A ratio R/W between a curvature of radius R of an arc of a circle extending through the carcass maximum width position (a) and a carcass position (c) of the inner edge in a radial direction of a buttress and curved along the carcass 6 therebetween and a carcass maximum width W being the distance in an axial direction of the tire in the carcass maximum width position (a) is set to a value within a range of 0.45-0.60.
Inventors:
Hiroaki Sakuno
Application Number:
JP31244589A
Publication Date:
July 09, 1998
Filing Date:
November 30, 1989
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C3/04; B60C9/08; (IPC1-7): B60C9/08
Domestic Patent References:
| JP606005A | ||||
| JP62299404A | ||||
| JP1114501A | ||||
| JP6128521B2 |
Attorney, Agent or Firm:
Naemura Tadashi