Title:
PNEUMATIC STUDLESS TIRE
Document Type and Number:
Japanese Patent JP3116243
Kind Code:
B2
Abstract:
PURPOSE: To provide less irregular rigidity for blocks and prevent lopsided wear by giving shallow bottom-up to a groove intersection where the angled portions of at least three polygonal blocks are opposed to one another and partially reinforcing the angled portions of the blocks.
CONSTITUTION: A groove intersection A between a tire peripheral groove and a tire cross groove, where the angled portions of at least three blocks 3 are opposed to one another is given shallow bottom-up to meet the requirement of 0<a/b≤0.2, 0.2≤h/D≤0.5, where (a) is the maximum length of the bottom-up portion of the groove intersection along the block side from the angled portion of the block, (b) is the maximum length of a diagonal line between the angled portions of at least three blocks 3, (h) is the height of the bottom-up portion of the groove intersection and D is the depth of the groove which is not given bottom-up.
Inventors:
Hideya Tamura
Application Number:
JP34137891A
Publication Date:
December 11, 2000
Filing Date:
December 24, 1991
Export Citation:
Assignee:
Yokohama Rubber Co., Ltd.
International Classes:
B60C11/04; B60C11/00; B60C11/11; B60C11/12; (IPC1-7): B60C11/00; B60C11/11; B60C11/12
Domestic Patent References:
| JP379406A | ||||
| JP3167009A |
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)
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