Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP3226968
Kind Code:
B2
Abstract:
PURPOSE: To provide a pneumatic tire, particularly, a heavy load pneumatic tire by which partial abrasion of a tread can be restrained and durability can be improved and which is used for a truck, a bus and so on.
CONSTITUTION: In this pneumatic tire, a pair of central circumferential grooves 3 are arranged in parallel with each other on a tread 1 while sandwiching the central circumferential line 2 between them, and main grooves 4 are arranged in parallel separately from each other on the tread edge sides to these central circumferential grooves 3, and a plurality of land part rows 5-7 are provided by dividing the tread 1 in the width direction. The respective land part rows 5-7 have divergently arrayed sipes 8 crossing the land part rows while inclining at an acute angle against a tire rotational direction (14) to a plane containing the tread circumferential line toward the tread edge sides from the tread circumferential line close to the central circumferential grooves 3. The sipes 8 have a blunting area where an inclination of sharpening sipe array is enlarged in the vicinity of the tread edge sides of the respective land part rows 6 and 7 situated between the central circumferential grooves 3 and the tread edges.
Inventors:
Tetsuto Tsukakoshi
Application Number:
JP19207592A
Publication Date:
November 12, 2001
Filing Date:
July 20, 1992
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C11/04; B60C11/03; B60C11/12; (IPC1-7): B60C11/04; B60C11/12
Domestic Patent References:
| JP62255204A | ||||
| JP310911A | ||||
| JP62299407A |
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)
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