Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP4367667
Kind Code:
B1
Abstract:
Provided is a pneumatic tire that has a directional tread pattern and includes: a rib-shaped first land area extending in the tire-circumferential direction in a center section of a tread portion; paired first main grooves being adjacent respectively to the two sides of the first land area; paired second land areas being adjacent respectively to the outer sides of the first main grooves; paired second main grooves being adjacent respectively to the outer sides of the second land areas; paired third land areas being adjacent respectively to the outer sides of the second main grooves; a fine groove extending at the center of the first land area; plural lug grooves formed in the first land area; and plural sipes formed in the first land area. Each lug groove intersects with a corresponding sipe. An end of the lug groove formed in the first land area is formed as a dead end between the fine groove and a corresponding first main groove. The width and depth of each lug groove formed in the first land area are gradually reduced from its open-end side to its closed-end side. Each sipe formed in the first land area communicates with the fine groove, and includes: a deeper section between a corresponding first main groove and the intersection with a corresponding lug groove; and a shallower section between the fine groove and the intersection with the corresponding lug groove.
Inventors:
Nakamura Daichi
Application Number:
JP2008146801A
Publication Date:
November 18, 2009
Filing Date:
June 04, 2008
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
B60C11/12; B60C11/04; B60C11/11; B60C11/13
Domestic Patent References:
| JP2005186850A | ||||
| JP2003146020A | ||||
| JP2004168189A | ||||
| JP2007331411A | ||||
| JP200547397A |
Attorney, Agent or Firm:
Kazuhiko Saishita
Shinichi Ogawa
Takashi Noguchi
Shinichi Ogawa
Takashi Noguchi