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US 2002/0053382 A1Published application
Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsShinichi Mori, Masakuni Kawamura
Life of this patent
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Abstract
Disclosed is a pneumatic tire capable of effectively making even a contact pressure of land portions composed of blocks or ribs. In the pneumatic tire, the plurality of land portions defined by grooves are provided on a tread, curved chamfered portions are formed on end peripheries of the land portions, a relation between a groove width A of the groove on a tread surface, the groove being adjacent to the end periphery, and a curvature radius B on the chamfered portion is established as: B=kA, and a value of a constant k is set in a range of 0.2 to 0.3.
Claims6
A pneumatic tire, comprising:
- a plurality of land portions defined by grooves on a tread,
- wherein a curved chamfered portion is formed on an end periphery of each of said plurality of land portions, a relation between a groove width A of the each groove on a tread surface, the groove being adjacent to the end periphery, and a curvature radius B of the chamfered portion is established as:
- B=kA, and a value of a constant k is set in a range of 0.2 to 0.3.
Dependencies are inferred from the claim text.