| 摘要 |
A conveying surface 37 is planar. A driving surface 30 positioned opposite to the conveying surface 37 has a flat surface 31, which extends in the longitudinal direction of the timing belt, on the center portion in the lateral direction of the timing belt. Belt teeth 32 are formed at a constant interval in the longitudinal direction on both of the outer sides of the center portion. The whole of the driving surface 30 is covered with a fabric 36, which is stretchable in both the longitudinal and lateral directions of the timing belt. |
