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Patent Searching and Data


Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2008307971
Kind Code:
A
Abstract:

To provide a pneumatic tire enhancing appearance property after development of friction while suppressing eccentric abrasion developed from a shoulder part end.

The pneumatic tire is provided with a plurality of layers of belt layer 11; and a tread 12 arranged at an outer side in the tire radial direction and provided with a plurality of circumferential main grooves 1 on a crown part. A large number of sipes 2 directed to a tire radial direction are formed on a buttress part 13 continued to an end of the tread 12, and an upper end of the sipe 2 is positioned in a range of 30-100% of depth D of the circumferential main groove 1. Length h opened to a surface of the buttress part of the sipe 2 is 5-150% of the depth D of the circumferential main groove 1, and depth t of the sipe 2 is within a range of 0.5-10% of tread width.


Inventors:
NAKADA HIROSHI
Application Number:
JP2007156195A
Publication Date:
December 25, 2008
Filing Date:
June 13, 2007
Export Citation:
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Assignee:
BRIDGESTONE CORP
International Classes:
B60C11/01
Domestic Patent References:
JPH02133202A1990-05-22
JPH0717214A1995-01-20
JP2004017846A2004-01-22
JP2001260612A2001-09-26
Attorney, Agent or Firm:
Ichiro Honda
Yumiko Sugimoto