Title:
A pneumatic tire for motorcycles
Document Type and Number:
Japanese Patent JP6130145
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pneumatic tire for a motorcycle with rolling resistance more reduced than a conventional one, without deteriorating driving stability.SOLUTION: A pneumatic tire 10 for a motorcycle includes a bead part 1, a sidewall part 2, a tread part 3 and a carcass 4. When a central region in the tire width direction, sandwiching a tire equator, of the tread part 3 is set as a center part 3a and both outer sides in the tire width direction of the center part 3a is set as a shoulder part 3b, a curvature radius Rc of an outer contour of the center part 3a and a curvature radius Rs of an outer contour of the shoulder part 3b satisfy a relation represented by Rc>Rs in a state of normal internal pressure with no-load specified by JATMA. Also, the pneumatic tire includes only these belt layers: an inclined belt layer 5 consisting of one layer inclined to the circumferential direction of the tire on the outer side in the tire radius direction of the carcass 4; and a spiral belt layer 6 consisting of one layer of reinforcing cord spirally wound in the circumferential direction on the outer side in the tire radius direction of the inclined belt layer.
Inventors:
Yasushi Tokito
Shoji Wakabayashi
Katsuhiko Kajimoto
Shoji Wakabayashi
Katsuhiko Kajimoto
Application Number:
JP2013001332A
Publication Date:
May 17, 2017
Filing Date:
January 08, 2013
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C9/18; B60C9/08; B60C9/22; B60C11/00
Domestic Patent References:
| JP2005247061A | ||||
| JP2012240574A | ||||
| JP2005193785A | ||||
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| JP2009173248A | ||||
| JP2011121408A | ||||
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Foreign References:
| WO2009037805A1 | ||||
| WO2011041859A1 |
Attorney, Agent or Firm:
Ichiro Honda
Yumiko Sugimoto
Atsushi Shinoda
Watari Takumi
Takashi Otaguro
Yumiko Sugimoto
Atsushi Shinoda
Watari Takumi
Takashi Otaguro