| 摘要 |
<p>A direct drive conveyor 129 comprising an endless belt, stretchable through its length, at least one drive pulley wherein one of the belt and the pulley has teeth 106 and the other of the belt and the pulley has sheaves 104 adapted to receive the teeth as the belt wraps around the pulley to an exit point wherein the drive pulley and the belt have different pitches, and a position limiter 200 disposed against the belt near the exit point so that the driven tooth will stay engaged with the recess in which the driven tooth is received for rotation of the pulley equivalent to more than the length of one pulley pitch.</p> |
