Patent ID: 11932056
Assignee: BRIDGESTONE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A competition wheelchair tire comprising: in regions, divided by a tire equator, on both sides of a tread surface of a tire, a grip area along an entire circumference of a tread, 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 tread surface, that extend from a tread edge side in a direction inclined relative to the tire equator and are arrayed in parallel; and a plurality of sipes that extend from the grip area toward the tire equator in a direction inclined relative to the tire equator, and terminate between a tire equator side edge of the grip area and the tire equator, wherein the plurality of sipes do not extend into the grip area, a negative ratio in the grip area is higher than a negative ratio closer to the tire equator than the grip area, an area inside the tire equator side edge of the grip area in a tread width direction is free of recessed lines, and an opening width of the plurality of sipes is larger than an opening width of the plurality of the recessed lines.