Patent ID: 7740326

Claim:
A core-less crawler track, comprising: rubber projections for driving formed at an inner peripheral surface of a crawler, wherein: each rubber projection, in side view, forms a substantially triangular shape provided with a drive side inclination surface Pa and a brake side inclination surface Pb, the drive side inclination surface Pa and the brake side inclination surface Pb are each provided with a bottom step and a top step, inclination angles X of the bottom step Paa, Pba of each of the drive side inclination surface Pa and the brake side inclination surface Pb are larger than inclination angles Y of the top step Pab, Pbb of each of the drive side inclination surface Pa and the brake side inclination surface Pb, the bottom step inclination angles X are set with an inclination angle XB of the brake side inclination surface Pb being larger than an inclination angle XA of the drive side inclination surface Pa, and the top step inclination angles Y are set with an inclination angle YA of the drive side inclination surface Pa being larger than an inclination angle YB of the brake side inclination surface Pb.