Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2010228546
Kind Code:
A
Abstract:
To reduce columnar resonance sound caused by a circumferential groove at a wide frequency band area while maintaining a freedom degree of design of a tread pattern.
The pneumatic tire includes at least one peripheral groove extended along a tread circumferential line, and a branch groove having one end opened to the peripheral groove and the other end completed in a land part on a tread step surface of the tire. A recessed and projecting part is provided on at least a part of a groove wall surface partitioning the branch groove, and a ratio of a surface area of the groove wall surface with respect to a projected area of the groove wall surface is increased.
Inventors:
FUJIWARA OSAMU
WAKE MITSUYUKI
WAKE MITSUYUKI
Application Number:
JP2009077187A
Publication Date:
October 14, 2010
Filing Date:
March 26, 2009
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
B60C11/04; B60C11/117; B60C11/13
Domestic Patent References:
| JP2009006966A | 2009-01-15 | |||
| JP2009029263A | 2009-02-12 | |||
| JP2002067623A | 2002-03-08 | |||
| JP2006069305A | 2006-03-16 |
Attorney, Agent or Firm:
Kenji Sugimura
Kiyoshi Kuruma
Tatsuya Sawada
Kazuyuki Tomita
Kiyoshi Kuruma
Tatsuya Sawada
Kazuyuki Tomita