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US 6,332,485 B1Granted
Pneumatic tire including rib-shaped lands
AssigneeBridgestone Corporation
InventorHiroyuki Matsumoto
Life of this patent
Estimating the term…
Abstract
A pneumatic tire comprises a tread portion having a plurality of block-shaped or rib-shaped lands defined by a plurality of tread grooves, wherein each edge portion of the same block-shaped or rib-shaped land located at a boundary between a ground contact region and a side wall of the block-shaped or rib-shaped land is subjected to chamfering convexly outward in a radial direction of the tire at a curvature varied in accordance with a distance from a given position of the block-shaped or rib-shaped land.
Claims3
In a pneumatic tire comprising;
- a tread portion having a plurality of rib-shaped lands defined between at least two circumferential main grooves extending zigzag along the circumferential of the tire and/or between the circumferential main groove and a tread end, wherein each edge portion of the same rib-shaped land located at a boundary between a ground contact region and a side wall of the rib-shaped land is subjected to chamfering convexly outward in a radial direction of the tire at a plurality of curvatures continuously varied such that the curvature is proportional to a distance vertically drawn from a circumferential position of the tire equally dividing the rib-shaped land.
Dependencies are inferred from the claim text.