Title:
TIRE USED IN WINTER
Document Type and Number:
WIPO Patent Application WO/2003/018333
Kind Code:
A1
Abstract:
Rib parts (6a, 6b) having sipeings (S) are formed on both sides of a center longitudinal groove (3) extending along the tire equator (C). The groove edge line (3E) of the center longitudinal groove(3) is formed zigzag with normal pitches (P) repeated in the tire−circumferential direction and composed of a main portion (3a) extending from the starting point (N1) on the outermost side in the tire−axial direction to the end (N2) nearest to the tire equator and a sub−portion (3b) having a length in the tire−circumferential direction shorter than that of the main part (3a) and extending from the end (N2) through the starting point (N1). The length of the main portion (3a) in the tire−circumferential direction is 60% or more of the length of each normal pitch (P) in the tire−circumferential direction.
Inventors:
HINO HIDEHIKO (JP)
Application Number:
PCT/JP2002/008233
Publication Date:
March 06, 2003
Filing Date:
August 12, 2002
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
HINO HIDEHIKO (JP)
HINO HIDEHIKO (JP)
International Classes:
B60C11/04; B60C11/12; (IPC1-7): B60C11/11; B60C11/12
Foreign References:
| DE19711607A1 | 1997-12-18 | |||
| JPH1024707A | 1998-01-27 | |||
| JPH0338409A | 1991-02-19 | |||
| JP2000219014A | 2000-08-08 | |||
| JPS5322883Y1 | 1978-06-14 | |||
| JPS61159203U | 1986-10-02 |
Other References:
See also references of EP 1419905A4
Attorney, Agent or Firm:
Naemura, Tadashi (Nishinakajima 4-chome Yodogawa-ku Osaka-shi, Osaka, JP)
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