Patent ID: 7806253
Filing Date: 2010-10-05
Classification: G03G

Abstract:
1. An apparatus for steering a belt comprising: a steering roller supporting the belt, the steering roller being rotatable about a first axis and pivotable about a second axis, the second axis being substantial perpendicular to the first axis; a rotatable element being rotatable about a third axis by a frictional force between a side portion of the belt and the rotatable element, the third axis being substantially parallel to the first axis; a transmission arranged for converting a rotational motion of the rotatable element about the third axis into a pivoting motion of the steering roller about the second axis, the transmission including a rotatable portion, operatively connected to the rotatable element and having a gear ratio larger than 1; and a pre-tension mechanism, the belt in operation being steered toward the rotatable element by the pre-tension mechanism, wherein the first axis and the third axis coincide.