Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP4145300
Kind Code:
B2
Abstract:
A pneumatic tire includes a tread surface having a plurality of main grooves extending straight in a circumferential direction of the tire. The plurality of main grooves defines land portions extending in the tire circumferential direction. The land portions each have a ground contact surface comprising a first circular arc having a single curvature radius in tire meridian cross section. The ground contact surface of at least the land portion which is located second when counted from the outer side of a vehicle when the tire is mounted thereon, is arranged so as to have the first circular arc and at least a second circular arc connected thereto on the vehicle outer side thereof. The circular arc located closer to the vehicle outer side has a smaller curvature radius and is positioned more inwardly away from the tread surface. The ratio d/D of the depth d of an intersection of the circular arc located closest to the vehicle outer side with a vehicle outer sidewall surface of the at least second land portion to the groove depth D of the main groove facing to the vehicle outer sidewall surface is 0.02 to 0.1.
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Inventors:
Zenichiro Shinoda
Application Number:
JP2004535906A
Publication Date:
September 03, 2008
Filing Date:
September 08, 2003
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
B60C11/00; B60C3/00; B60C11/04; B60C11/12
Domestic Patent References:
| JP7329516A | ||||
| JP2002029219A | ||||
| JP11165504A | ||||
| JP3246104A |
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kazuhiko Saishita
Takashi Noguchi
Kazuhiko Saishita