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Patent Searching and Data


Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2016/075922
Kind Code:
A1
Abstract:
Provided is a pneumatic tire capable of maintaining quietness at high levels while increasing wet braking performance. A tread comprises one or more land portions that are sandwiched between a plurality of circumferential main grooves extending continuously in the tire circumferential direction. At least one of the land portions is formed into a protruding shape wherein the outer contour thereof in the tire radial direction in a cross section in the tire width direction protrudes outward in the tire radial direction. In the cross section in the tire width direction, the outer contour includes at least a first arc face located in the center of the land portion in the tire width direction and having a curvature radius and a second arc face having a curvature radius smaller than that of the first arc face and located on both ends of the land portion in the tire width direction. At least one of the land portions formed in the protruding shape has sipes formed thereon extending in the tire width direction, the sipes each having a chamfered portion at the open position of the tread. The chamfer width of the chamfered portion on at least one of the ends in the tire width direction is larger than that in the center in the tire width direction.

Inventors:
HONDA, Shingo (1-1 Kyobashi 3-chome, Chuo-k, Tokyo 40, 〒1048340, JP)
Application Number:
JP2015/005589
Publication Date:
May 19, 2016
Filing Date:
November 09, 2015
Export Citation:
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Assignee:
BRIDGESTONE CORPORATION (1-1 Kyobashi 3-chome, Chuo-ku Tokyo, 40, 〒1048340, JP)
International Classes:
B60C11/00; B60C11/03; B60C11/12
Foreign References:
JP2001287510A2001-10-16
JP2011073471A2011-04-14
JPH0310910A1991-01-18
Other References:
See also references of EP 3219511A4
Attorney, Agent or Firm:
SUGIMURA, Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigaseki, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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