Title:
【発明の名称】トラック及びバス用空気入りラジアルタイヤ
Document Type and Number:
Japanese Patent JP2744427
Kind Code:
B2
Abstract:
PURPOSE:To improve the durability of a tire for bus and the like by mounting the tire onto a rim having narrower width than that of a standard rim and filling inner pressure of predetermined % that of regular level thereby specifying carcass profile of cross-section in radial direction under no-load state. CONSTITUTION:In a tire to be mounted on a rim narrower than a standard rim and filled inner pressure of 5% that of regular level while having maximum height H of carcass line C (hereafter, referred to carcass C) under no-load and rim width W, a balanced curve N passing through a contact point A be tween tangential lines m, m' at the widest point of the carcass C and cross points B, D between the carcass C and normals p, p' at points separated by a distance 0.45W (W represents rim width) from an equator face M is obtained. The profile of the carcass is set such that the distance (u) between the contact points E and A of the curve N and the tangential lines m, m', intervals (s), (t) between the curve N and the carcass C in the upper and lower regions of the sidewall satisfy the formulae I-III respectively. By such arrangement, durabil ity can be improved.
Inventors:
Kiyoshi Sato
Kuninobu Kadota
Tatsuro Shimada
Hiroyuki Ozeki
Kuninobu Kadota
Tatsuro Shimada
Hiroyuki Ozeki
Application Number:
JP28107687A
Publication Date:
April 28, 1998
Filing Date:
November 09, 1987
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C3/04; B60C9/02; B60C9/08; B60C13/00; (IPC1-7): B60C9/02
Domestic Patent References:
| JP5747203A | ||||
| JP5511996A | ||||
| JP5583604A |
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)
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