Pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorTomoyuki MUKAI
Life of this patent
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Abstract
A pneumatic tire comprises at least one sidewall portion provided with a serration pattern on its outer surface, the serration pattern comprising a plurality of first groups being repeatedly arranged in the circumferential direction of the tire, each first group comprising a plurality of ridges which are arranged using gradually increasing pitches toward a first circumferential direction of the tire, wherein a region provided with the serration pattern on the outer surface of the sidewall portion has a radius of curvature in a range of not more than 70 mm in a cross section including a tire axis under a standard condition such that the tire is mounted on a standard rim and inflated to a standard pressure, but no tire load is loaded.
Claims8
A pneumatic tire having a pair of sidewall portions, which comprises
- at least one of said sidewall portions provided with a serration pattern on its outer surface,
- said serration pattern comprising a plurality of radially extending ridges being arranged in a circumferential direction of the tire, said serration pattern including a plurality of first groups being repeatedly arranged in the circumferential direction of the tire,
- said each first group comprising a plurality of said ridges which are arranged using gradually increasing pitches toward a first circumferential direction of the tire, wherein
- a region provided with said serration pattern on said outer surface of the sidewall portion has a radius of curvature in a range of not more than 70 mm in a cross section including a tire axis under a standard condition such that the tire is mounted on a standard rim and inflated to a standard pressure, but no tire load is loaded.
Dependencies are inferred from the claim text.