Patent ID: 11938759
Assignee: BRIDGESTONE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A competition wheelchair tire comprising:
a sipe, on a surface of a tread of a tire, extending across a tire equator from one side to another side of the tire equator; and
a grip area along an entire circumference of the tire, in each of regions on the one side and the another side, the grip area including a plurality of recessed lines, with a shape recessed toward an inner side of the tire from an outline of the surface of the tread, that extend from the tread edge side in a direction inclined relative to the tire equator and are arrayed in parallel,
wherein an end of the sipe on at least the one side is located at a tread edge or near the tread edge, and an inclination angle of the sipe relative to a width direction of the tread decreases from the tire equator towards the tread edge,
the inclination angle of the sipe relative to the width direction of the tread in the grip area is smaller than the inclination angle of the sipe relative to the width direction of the tread in an area inside the width direction of the tread compared to the grip area, and
the sipe includes a partial sipe portion extending along the tire equator.